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Hi, Abaqus converts all names to upper case and removes all white signs. In your case you need use: if (cmname .eq. 'MATERIAL-1') then Bartosz VIM filetype plugin for Abaqus https://github.com/gradzikb/vim-abaqus

Hi, FORTRAN layout is spilt into declaration and executable section. Declaration section is first and executable second, you must not mix these two sections. The executable section starts after first executable line and after it you must not put any declaration lines. Here is executable...

Hi You defined AREA variable as parameter it means the variable never change value and always will be 0.0. PARAMETER(RADIUS=0.15D0,AREA=0.D0) but next you try to change AREA value AREA=AREA+AREA1 Bartosz VIM filetype plugin for Abaqus https://github.com/gradzikb/vim-abaqus

Hi You can define name and description for each state variable. ** *DEPVAR ** number of variables 3 ** variables list 1, outputKey1, outputDescription1 2, outputKey2, outputDescription2 3, outputKey3, outputDescription3 ** Bartosz VIM filetype plugin for Abaqus...

Hi, It you prefer to work directly with abaqus inputdecks in text editor the plugin make work easier. However it is for VIM text editor so you have to know it. Regards, Bartosz VIM filetype plugin for Abaqus https://github.com/gradzikb/vim-abaqus

Hi, Your example is incorrect and interpolation can not be done in this case. From Abaqus documentation (21.1.2 Material data definition, Interpolation of material data) For three field variables with values in range from 0 to 2 we must define lines: ** ** 50 0 0 0 30 1 0 0 20 2 0 0 ** 50 0...

Hi, You must not use more than one USDFLD subroutine. You can test your material name with CMNAME variable to do different operation for each material in your model. See following thread for more info: http://www.eng-tips.com/viewthread.cfm?qid=314887 Regards, Bartosz VIM filetype plugin...

Hi, I ran your model and I noticed FV1 vary between value of 145.0 and 375.0. With your material definition it make sense only when FV1 vary from 1.0 to 2.0. Abaqus use constant extrapolation outside field variable range so any value above 2.0 will use E=2e+09. Please check your equation...

Hi, Could you share your inputdeck and subroutine, please? I will take a look for it. Regards, Bartosz VIM filetype plugin for Abaqus https://github.com/gradzikb/vim-abaqus

Hi, It looks like your UMAT is wrong, to be more precise FORTRAN does not like line 14 "4 JSTEP(4)". If you compare your UMAT arguments with documentation you will find a mistake. One before the last argumnent is JSTEP not KSTEP. SUBROUTINE UMAT(STRESS,STATEV,DDSDDE,SSE,SPD,SCD, 1...

Hi Jungao >>> Is it correct that we need to declare 'save' in the beginning, then they are saved as global variables By default all variables used in subroutine are not controlled after call. It means part of memory where your variable is stored can be overwrite by any other program or Abagus...

Hi Jungao, I have never used URDFIL subroutine so I know nothing about it. But as long you are ok with displacement and velocity of integration points you can evaluate them in DLOAD. ! keep values in memory save rPrevCOORDx save rPrevCOORDy save rPrevCOORDz save rPrevTIME ! disp =...

Hi Jungao It is good to hear that it is starting to work as you expecting. One advice from my side. You really should not depend on "187 offset" between user and internal ids. It's probably true only for this one model, or maybe not. It is high likely with different Abaqus version/number of...

Hi Jungao, >>> I have also attached the .dat file for your information There is no attachment. >>> I suppose when ABAQUS call the subroutine DLOAD, it's actually looping in main function ABAQUS to define F for each element integration point Yes. >>> the size of the loop is (element...

Hi Jungao, To be honest I am still confuse about your load. I understand that each beam element will get different load. The load is calculate outside DLOAD subroutine and next stored (by initialization and/or reading from external file) in FY array. The FY array structures is: FY(1) : load for...

Hi Keith, Make sense for me. You can check it in easy way with "WRITE(6,*) NOEL,NPT,JLTYP". It transfers only elements with applied user load, so in your case all elements in LOADELEM elset. If you are using flat inputdeck and still id of elements does not fit to inputdeck maybe...

Hi Keith, Are using part and assembly inputdeck structure or flat inputdeck structure? With parts and assembly Abaqus use user and internal node/element numbers. Abaqus before start analysis renumber whole model from user to internal ids. In inputdeck you have user ids and in NOEL you have...

Hi David, Initial step always initialize only first step, doesn't matter what type it is (static, dynamic, ...). But all results are passed to another step. So if you have first step which doesn't change your initial values you will get them also in second step. Sounds good, you can use python...

Hi, I have no experience with FV initialization but in documentation is information that values are read from output database so I understand from odb file. Try to save FV outputs to odb (*NODE OUTPUT) and than use *INITIAL CONDITION, FILE=... I have two ideas: 1. USDLD and 2 steps I would...

Hi, I do not think the problem is related to full integrated element type you are using. Each integration point is treated separately in you example so it should not be a problem. Is there any rule for initial distribution which can be describe with an equation? One more point, are you sure...