Abaqus peeq output. The steps to extract the data are as follows: The collective output variable keys are distinguished from their individual components by the fact that they have the word "yes" after the category . frd file is always The specified section points are used only during the selected output request; Abaqus reverts to the default section points for subsequent output requests. Repeat the second data line as often as necessary to define the list of variables to be output to the output database. In the case of the Mises and Johnson-Cook plasticity models in Abaqus/Explicit In ABAQUS, PEEQ refers to the equivalent plastic strain, and PEMAG refers to the plastic strain magnitude. CUF1 Uniaxial force in the 1-direction. If you request preselected field or history output and request additional output variables using individual output requests for specific variable types, the variables requested will be appended to the variables contained in the preselected list. CUM2 Uniaxial moment about the 2-direction. You can request element integration point variable output to the results or output database file. The Output block: table contains a list of the output blocks with Local coordinate system If the components of an element quantity are in local directions, a record of type 85 defining these directions is generated for each point at which component output is requested if the local coordinate directions were requested in ABAQUS/Standard (see Output of local directions to the results file” in “Output to the data and results files, Section 4. To extract nodeLabel of fieldOutputs of S/PEEQ in an Abaqus odb file using a Python script, you can use the "odbAccess" module in Abaqus. Jan 8, 2020 · There has been a high number of queries regarding the calculation of PEEQ Output variable (Equivalent Plastic Strain) in Abaqus. Members share and learn making Eng-Tips Forums the best source of engineering information on the Internet! In addition to the standard output identifiers available in Abaqus (Abaqus/Standard output variable identifiers and Abaqus/Explicit output variable identifiers), the following variable has special meaning for the classical metal plasticity models: In addition to the standard output identifiers available in Abaqus (Abaqus/Standard output variable identifiers and Abaqus/Explicit output variable identifiers), the following variables have special meaning for the Johnson-Cook plasticity model: PEEQ Equivalent plastic strain, ¯εpl =¯εpl∣∣0+∫t 0 √2 3 ˙εpl: ˙εpldt, ε ¯ p l May 28, 2020 · PEEQ strain will only show you plastic behavior of the material. You may use elements that don't support them, for example. May 21, 2013 · I have a small question on outputs such as E11,E22,E33,S11,S22,S33,U1,U2,U3 etc. You add field output data to a Frame object by first creating a FieldOutput object using the FieldOutput constructor and then adding data to the FieldOutput object using the addData method. The following output variable keys are currently supported: S: All stress components. 1, and ABAQUS/Explicit output variable identifiers, Section 4. In Abaqus the elasticity is defined by including linear elastic behavior or, if relevant for some plasticity models, porous elastic behavior in the same material definition (see Material data definition). The tables in this section list all of the output variables that are available in ABAQUS/Standard. fil in the tables in Using Abaqus/Standard Output Variable Identifiers. g. For geometrically nonlinear analysis in Abaqus/Standard, E is not available for output and LE is output by default. Would that be correct? I am interested in the maximum and minimum principal stresses as well as deflections. Output to the output database, Section 4. 1. So, in general, PEMAG is the preferred Sep 27, 2011 · More information how to do it You will find in documentation: Abaqus Scripting User's Manual, 9. You can download Netscape Communicator from here. It is suitable for those want to write their Abaqus USDFLD subroutine. The keys are defined in Abaqus/Standard output variable identifiers and Abaqus/Explicit output variable identifiers. Exceptions are the user-defined output variable UVARM and the integration point coordinates variable COORD You can request element integration point variable output to the results or output database file. For linear perturbation analyses Jul 2, 2017 · I want to create a custom field output in ABAQUS. Output requests organized into the output blocks are written out within the corresponding step definition in the Abaqus input deck. The part of the material goes like this, where after the keyword *PLASTIC, lines of stress & plastic strain pairs are ABAQUS/CAE displays output only at active locations. it's accumulated equivalent plastic strain increment Jul 2, 2017 · Which strain output (LE,PE,EE,IE,NE) of Abaqus Standard/Explicit CAE should be taken in case of non-linear crimping analysis of nitinol stents? In addition, the ABAQUS Scripting Interface examples, Reading from an output database, Section 3. Repeat this data line as often as necessary to define the increments at which output is When defining plasticity data in Abaqus, you must use true stress and true strain. Hi, I'm modelling the coupon in the picture to evaluate shear. I would use E or LE variable instead. In order to reduce the . I have a model after applying load it has some change in length due to bending and also because of plastification effect. Post by Ireneo Torca Dear all, I'm trying to program an user subroutine USDFLD and I'm using utility routine GETVRM in the subroutine to access to the solution data stored in databases during the analysis. In this blog we will give a simple welding example, showing how results from a thermal analysis can be applied to a structural analysis (sequentially coupled thermal-stress analysis) and how elements can be activated/deactivated using the model change option. In the following procedure you will change the output frequency during the Contact step so that data are written to the output database once—at the last increment of the step. Your browser is not supported by this document. fil in the tables in Abaqus/Standard output variable identifiers. ABAQUS creates a new field output variable that is contained in a frame of the session step and available from the Field Output dialog box. CUF2 Uniaxial force in the 2-direction. I understand that ABAQUS interpolates or extrapolates from integration points to nodal points, so intuitively this tells me that my integration points are more accurate and to output variables at those points instead of nodes. All types of output requests in an output block are defined from the card image. The tables in the following sections list all of the output variables that are available in Abaqus/Standard. 3. The following topics are discussed: FieldOutput FieldOutput addData addData addData Output In addition to the standard output identifiers available in Abaqus (Abaqus/Standard output variable identifiers and Abaqus/Explicit output variable identifiers), the following variables have special meaning when damage evolution is specified: STATUS Data lines to request output from specified increments if both the ITERATION and the CYCLE parameters are omitted First line First increment number at which additional output is being requested. 2), the following variables have special meaning for the Johnson-Cook plasticity model: Nov 13, 2018 · In Abaqus/Standard you can use PEEQ, PEMAG and AC YIELD (the last one is a yes/no flag that you are talking about). Nov 13, 2018 · You can use Tools —> Create Field Output —> From Frames to find maximum value of PEEQ in selected step. It will only show direct on output if you plot the equivalent strain (PEEQ). Output variable keys that cannot be used with GETVRMAVGATNODE are listed later in this section. A tutorial video is also provided, explaining the attached Abaqus USDFLD subroutine code, model setup, and result analysis. Abaqus requires these values to interpret the data correctly. CUM1 Uniaxial moment about the 1-direction. When you select an output request file format from the tree, the output block table is displayed in the Load Step window. The value of N applies to *OUTPUT, *ELEMENT OUTPUT, *EL FILE, *ELPRINT, *NODE OUTPUT, *NODE FILE, *NODE PRINT, *FACE PRINT, *CONTACT OUTPUT, *CONTACT FILE and *CONTACT PRINT. By default, Abaqus/CAE writes the default field output variables from a static, general procedure to the output database after every increment of a step. odb file's size, I try to control the field output requests extraction. In my model, there are 2 bodies in relative motion and the bottom one is fixed while the top one is having a periodic motion. The output in the . You can control the active status of the two section point locations by using the Active locations radio buttons at the top of the dialog box. Model information and analysis results are stored in terms of an assembly of part instances (see Defining an assembly, Section 2. Mar 1, 2016 · Hello, I like to know how to get strain values from abaqus output. The applicable keys are listed in the output table as being available for results file output at the element integration points; e. If the FREQUENCY parameter is used for more than one of these keywords with conflicting values of N, the last value applies to all. 2) and Mar 6, 2025 · 如何对Abaqus子程序中状态变量SDV进行定制输出_Abaqus_UM_材料-仿真秀干货文章以场输出为例 *Output, field *Node Output CF, RF, U *Element Output, directions=YES LE, PE, PEEQ, PEMAG, S, SDV 定义各个变量的… For most materials and only proportional loading, PEMAG is equal to Equivalent Plastic Strain (PEEQ). Data lines to request element output in the results file in an Abaqus/Standard analysis First line (optional, and relevant only if integration point variables are being printed for shell, beam, or layered solid elements) Give a list of the section points in the beam, shell, or layered solid at which variables should be written to the results file. 1 of the ABAQUS Analysis User's Manual. 2), the following variables relate specifically to material points in the concrete damaged plasticity model: In Abaqus/Standard the default output points through the thickness of a shell section are the points that are on the bottom and top surfaces of the shell section (for integration with Simpson's rule) or the points that are closest to the bottom and top surfaces (for Gauss quadrature). LE: All logarithmic strain components. Refere to Abaqus analysis manual->materials->inelastic mechanical properties->metal plasticity. May 14, 2008 · Hello everybody, I currently work on Abaqus/Standard 6. PEEQ is a scalar and gives the Plastic Strain resulting from Equivalent VM Stresses therefore both tensile and compressive Stresses above the Yielding limit will contribute. PEEQ: Equivalent plastic strain. You can request element integration point variable output to the data, results, or output database file. History output is requested for specific points and is used to create X-Y plots. In the following an example formula: Strain Please don't take Abaqus进阶篇9详细讲解了分析步模块下的output设置，适合想深入了解数据输出的用户观看。 Abaqus/CAE can calculate and report values for a given variable at a variety of positions. In short words, field output is requested for whole model or part of it and is used to create contour plots. Lets say I have use an orthotropic material and have defined the different material orientations. A SectionPoint object specifying the location in the section. However keep in mind that PEEQ is calculated at element’s integration point and nodal values will be extrapolated from it. Field output and history output are controlled by output database requests as described in this section. . Output blocks are added to load steps (*STEP). Only equivalent plastic strain gives values May 20, 2020 · I am doing a wear simulation using UMESHMOTION subroutine. Dear Nastran users, I would like to know how can I calculate "Von Mises plastic equivalent strain" in Nastran. All the output variables are defined in ABAQUS/Standard output variable identifiers, Section 4. In Abaqus this value is defined as PEEQ. 2, and Investigating the skew sensitivity of shell elements, Section 7. The possible report positions are: integration point, centroid, element nodal, and unique nodal. Nov 13, 2015 · It should be in the manual under whatever material model you have specified. A major different between the FILE and PRINT requests is that the PRINT requests HAVE TO be accompanied by a set name. The capability uses a combination of Fourier series and time integration of the nonlinear material behavior to obtain Connector uniaxial behavior can be defined only in Abaqus/Explicit; therefore, there is no uniaxial force output available in Abaqus/Standard. , up to eight increments per line. Other strain measures (PE) only show new strain accumulation. CUF3 Uniaxial force in the 3-direction. Can someone explain why I'm getting multiple stress and strain values for each step increment? I'm unsing explicit model with mass scaling. 3, illustrate how to read data from an output database. If this variable is greater than zero, the material has Except for the information in the status file, results can be obtained from ABAQUS/Explicit only by postprocessing. There is no simply-defined expression to give this quantity in terms the logarithmic strain LE. Essentially it's a scalar measure of all the components of equivalent plastic strain at each position in the model, somewhat like Von Mises stress is a scalar measure of the shear stress at a point. Both are scalar measures of the accumulated plastic strain. Oct 3, 2024 · I have selected the following Field output requests: A,CSTRESS,DMICRT,EACTIVE,EEQUT,EVF,LE,PE,PEEQ,PEEQVAVG,PEVAVG,RF,S,SDEG,SEQUT,STATUS,SVAVG,TE,TEEQ,TEVOL,U,V, Since DMICRT and SDEG are included, I was hoping that elements would accrue damage and then be deleted once DMICRT (or JCCRT) reached 1 for the whole element and SDEG=1. If you edit the output request for an Abaqus/Explicit analysis procedure in the step in which it was created, you can apply a filter to remove high frequency data from the field output. For the purpose of proof on concept, I want to display the maximum shear stress as calculated from the Mohrs circle, as discussed here for a 2D she In addition to the standard output identifiers available in ABAQUS ( ABAQUS/Standard output variable identifiers, Section 4. After running this model, I get a warning: 1) The request for mises output will be replaced by a request for s output. CUM3 Uniaxial moment about the 3-direction. I like to know where to get strain values for that stretching. *EL PRINT S, COORD, PEEQ, Code language: plaintext (plaintext) As far as I know, you cannot find those commands in Abaqus CAE, but all the printing options to the dat file are given in section 4. 6. me/abaqus_asistOur Telegram channel for FFS, Structure Integrity and the analysis of fixed equipment:https 1) PEEQ is not a vector quantity, rather a scalar. Consequently, the output can be limited to a few nodes or elements. However, for loading with reversals, PEEQ will continue to increase if the plastic strain rate is non-zero (regardless of sign). I would like to select the following field output requests: PEEQ, PEMAG, MISES, CPRESS, RF, U. Although sectionPoint is an optional argument to the addData method, if you omit this argument when you are writing field output data for a shell or a beam you cannot subsequently select the section point to display when you are displaying the field output data using ABAQUS/Viewer. Select Primary from the list of variable types on the left side of the Field Output toolbar, and select PEEQ from the list of output variables. You can display field output variables that you have created in the same ways as output database field output variables: in the form of a deformed, contour, or symbol plot; by probing any model or X–Y plot; as X–Y data obtained along a path through your model; or in a tabular Sep 14, 2018 · Plastic strain equivalent (PEEQ): This is an Abaqus ® term that represents a bulk strain measure output. Output variable keys that cannot be used with GETVRM are listed later in this section. Requesting output to the output database Three types of information are stored in the output database in Abaqus/Standard and Abaqus/Explicit: “field” output, “history” output, and diagnostic information. Any area that is yielding will have a PEEQ value, and this value gives a sense for how far out that particular area is along the material failure model (shown in 0). Using the Abaqus Scripting Interface to access an output database. Suppress averaging to identify discontinuities in the field output or to establish contour limits based on the extrapolated, unaveraged results. Use the Output requests option define output options for ODB, result (. 9. THE: All thermal strain components. dat) file formats. A nonintegrated measure of plastic strain is PEMAG. If this variable is greater than zero, the material has yielded. A sequence of Strings specifying output request variable or component names, or the SymbolicConstant PRESELECT or ALL. The tables in this section list all of the output variables that are available in ABAQUS/Explicit. I don't exactly know how to include this There are two ways to define output variable requests quickly and easily. PEEQ is an integrated measure of plastic strain. 1). Both methods are available for field and history output requests and for the individual output requests used for requesting specific variable types (for example, nodal, element). PEQC: All equivalent plastic strains for models Requesting output to the output database Three types of information are stored in the output database in Abaqus/Standard and Abaqus/Explicit: “field” output, “history” output, and diagnostic information. For proportional loading, the measures should be equal. Feb 17, 2006 · PEEQ is the ABAQUS parameter name for the equivalent plastic strain. In HyperMesh, Abaqus output requests are organized into HyperMesh collectors called output blocks. The other issue to understand is what you have specified is the equivalent plastic strain. Sep 19, 2022 · I've created a field output request with output variables of S, Mises, LE, PEEQ. It is available only with Abaqus sensitivities. PRESELECT represents all default output variables for the given step. Nov 19, 2009 · To All, I know that equivalent plastic strain that you output using PEEQ command is cumulative, positive, scaler quatity but does it increase everytime the strain goes above yield or when it exceeds the previous max value. Click OK to create your new field output variable and to dismiss the dialog box. To control whether Abaqus/CAE averages output from multiple elements at shared nodes, toggle Average element output at nodes. I'm interested in the stress TRIAXiality vs PEEQ values. Apr 9, 2020 · What all parameters affect the PEEQ values of a milling process And how can I increase the PEEQ value in a simulation. In case of Explicit you are generally limited to PEEQ. The following parameters are optional and valid only if the FIELD parameter is included NUMBER INTERVAL Set this parameter equal to the number of intervals during the step at which the output database states are to be written. Element nodal and unique nodal positions both involve reporting results at the nodes of the model; however, reporting of unique nodal values produces only a single value at each node, whereas reporting of For relative rotations the Abaqus convention of reporting angles between −2π 2 π and 2π 2 π radians is not used with connector elements. The load stays Mar 3, 2021 · Check the warning messages generated by Abaqus, they might tell you why these variables were not included in the output database. The following is a second example that uses an element set to define the region and generates formatted output. 2 of the Abaqus Documentation. If no node set is selected by using the NSET parameter (both for nodal and element values, since output in the . Select Bottom or Top to activate only the Bottom Location or Top Location section point. I had requested for a velocity output but it shows a warning OUTPUT REQUEST V IS NOT AVAILABLE FOR THIS TYPE OF Jan 12, 2023 · Eng-Tips is the largest forum for Engineering Professionals on the Internet. localCoordSystem Jun 27, 2022 · Element Output, directions=YES（选择单元输出模式，默认输出所有单元） LE, PE, PEEQ, PEMAG, S（选择单元输出变量类型） FIELD OUTPUT: F-Output-2（场变量输出第二项） ** Node Output, nset=CENTRE（选择节点输出模式，选择CENTRE节点集合） U, （选择节点输出变量类型：位移） Output variable key from the table in ABAQUS/Standard output variable identifiers, Section 4. For more information, see Building valid field output expressions, Section 24. For example, if NUMBER INTERVAL =10, Abaqus/Explicit will write 11 output database states Nov 18, 2023 · Element Output, directions=YES（选择单元输出模式，默认输出所有单元） LE, PE, PEEQ, PEMAG, S（选择单元输出变量类型） FIELD OUTPUT: F-Output-2（场变量输出第二项） ** Node Output, nset=CENTRE（选择节点输出模式，选择CENTRE节点集合） U, （选择节点输出变量类型：位移） Mar 13, 2015 · In Abaqus/Standard, output identifier E gives you the total integrated strain. PEEQ and PEMAG are equal for proportional loading. Our telegram channel for Abaqus and Q&A: https://t. PEEQT: Equivalent plastic strain in uniaxial tension, defined as ∫ ˙¯εpl t dt ∫ ε ¯ ˙ t p l d t. You create new field output variables from fields by operating on analysis results found in the output database. I don't know how I have to ask for variables as MISES, PEEQ, PRESS, Any suggestion? I don't find anything in the Online Help Thanks a lot [Non-text portions of this message have been You can request element section variable output to the data, results, or output database file. PEEQ is a measure for the equivalent strain, a similar measure as von Mises stress for stresses hence it is just better to take for example the output "E" for small strains in Abacus if you need The Averaging options appear. Nonlinear Solid Plastic Strain for solid element) but I don't understand if is this Von Mises or Tresca or other term. Throw some research i found that the PEEQ + CEEQ = IEEQ: Equivalent inelastic strain. Those parts of the lug that have yielded can be identified in a contour plot of PEEQ by selecting ResultField Output from the main menu bar and selecting PEEQ from the list of output variables in the dialog box that appears. Abaqus/Explicit will always write the results at the beginning of the step. Nov 14, 2018 · I have a question regarding the PEEQ and PE Outputs in ABAQUS. Hello everybody! I am working with a Creep material behaviour using Strain-Hardening Law, After the simulation I want to get The PEEQ: Equivalent plastic strain ( accumulated plastic strain ) but in fact abaqus provids me with the CEEQ: Equivalent creep strain. Happy reading. If this data line is omitted, the variables A FieldOutput object contains field data for a specific output variable. fil) and data (. I had a customer query wanting to know as to how PEEQ is determined. The equivalent plastic strain in a material (PEEQ) is a scalar variable that is used to represent the material's inelastic deformation. Etc. I see that there's already an output value (for example 60184. Assume you have a cyclic compressive load on an element. , S for stress. Coupon geometry TRIAX results PEEQ results This project demonstrates how to use Abaqus USDFLD subroutine to reduce material stiffness when stress exceeds a defined threshold. More details can be found in Abaqus documentation chapter "What is the difference between field output Output In addition to the standard output identifiers available in ABAQUS/Explicit ( ABAQUS/Explicit output variable identifiers, Section 4. The collective output variable keys are distinguished from their individual components by the fact that they have the word "yes" after the category . Dec 8, 2018 · I would like to visualise the results for ALL THE FRAMES of the new field output variable in the visualisation module along with the other requested outputs such as S, U, PEEQ. frd file can but does not have to be restricted to subsets. PE: All plastic strain components. Connector element output of angles and rotational components or relative motion includes accumulated multiple rotations whose magnitudes can be arbitrarily large. ABAQUS软件各应变分量的区别与联系讲解，欢迎大家补充！, 视频播放量 28327、弹幕量 1、点赞数 480、投硬币枚数 287、收藏人数 1777、转发人数 121, 视频作者 CAE老白, 作者简介 模型调试、代作、答疑、一对一，大胆加微信 CAE_nice，相关视频： The Abaqus plasticity models also need an elasticity definition to deal with the recoverable part of the strain. Second increment number at which additional output is being requested. Output blocks must be added to the corresponding load steps for them to be written out to the Abaqus deck. The direct cyclic analysis capability in Abaqus/Standard provides a computationally effective modeling technique to obtain the stabilized response of a structure subjected to periodic loading and is ideally suited to perform low-cycle fatigue calculations on a large structure. The outputs I mentioned earlier, are they based on the global coordinate system or the local coordinate system that I This section summarizes the changes and the additions that have been made to output variable identifiers used in ABAQUS. If you use the Field Output Request editor to select a vector or tensor variable to be included in a field output request, ABAQUS automatically writes all components of that variable to the output database during the step. For example, if you select the vector U in a three-dimensional model, ABAQUS outputs the three displacement components U1, U2, and U3 to the output database along with the The collective output variable keys are distinguished from their individual components by the fact that they have the word "yes" after the category . 2. For more information on tuples, the len () function, and the range () function, see Sequences, and Sequence operations. Jun 26, 2023 · For handling such large amounts of data, using Python with the Abaqus scripting interface might be more efficient for directly reading and manipulating the output data. rted wtrk qjlwodn s8zqio gxqfw6t ke zhmuwpo 4vgoosk ikpb ogbali