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I want to use an external subroutine in my umat but I have not been able to do that so far. Having created a dynamic library project in Visual Studio 2008, I have created a .dll and .lib files and copied the .lib file into the working directory of my abaqus job and the .dll file to exec folder. I have also added the directory of the .lib file in the LIB environmental variable. But I get these errors from ABAQUS: 



[quote]LINK : fatal error LNK1181: cannot open input file 'Dll2.lib' 

Here you can find a sample codes along with documentation:

 http://www.columbia.edu/~jk2079/Kysar_Research_Laboratory/Research.html

 At the end of the page there is the link. 

Hi ,

I am performing a nonlinear analysis (ANSYS) of GRP pipe which is subjected to diametral compression ,

 i am appling a line load in steps of 0.05 increments until load  reaches a maximum value  of 40kN in  20 steps 

i have got convergence till 13 steps but unable to get convergence in next further steps , i am getting error as LSSOLVE looping is stopped because solution is unconvergent and NCNV, 1set

Hi, all,

I'm quite sure we can use Python read displacement and load for certin node set from Abaqus odb result file and then plot X-Y data (That's all I need). I has been struggling for a whole week to find out a good solution. I've many resources out there but nothing has been worked out though. So, I wonder if anyone knows how to address this issue or even share me a link. I really appreciate it!

Thanks.

Aaron 

Dear all,



I have a problem now:



I simulated indentation on a elastic-plastic model with a rigid
indenter, the elastic ideal plastic with von mises stress model in



ABAQUS is used. A contact pair is applied to calculate the contact between the indenter and the sample.



The problem is that the obtained the force-displacement data in the loading part, which contains the plastic deformation

is not smooth, but in the unloading part is smooth. But if a model

Hi everybody,




I'm working on UEL. The stiffness matrix (AMATRX) which I have
defined is consisting of complex numbers (real and imaginary part).


When I'm running it I'm getting this error message:




Abaqus Error: The executable standard.exe aborted with system
error code 1073741819. Please check the .dat, .msg and .sta files for
error messages if the files exist. ...




I checked the files and no error message was found.


When stiffness matrix is just real numbers, it's working perfectly.