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software of interest to mechanicians

Modeling non-linear material

Submitted by reza_01012003 on
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ABAQUS
non-linear material

Dear all

I would like to model two non-linear material as shown in the pictures in ABAQUS. But I can model it with its non-linearities. The model has been created with beam element. I used the classical elastic-plastic model using calibrations but because of elastic non-linearities the calculated plastic strain comes negative. please help me howI can model it

regards

Abaqus- Nodal force and Reaction force

Submitted by anshulfy on
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reaction force
Nodal force

Hi,

What is the difference between the nodal force (NFORC) and Reaction force in abaqus. I applied some displacement in my model, when checking the Reaction and Nodal force at the same node, Nodal force is just half the reaction force. Then I did some experiment and applied some load on a node, after solution when i check the nodal force on the same node, it is half of the applied load. Why is it not  same as the load I applied? I am confused. Please help me.

 Thanks,

Anshul

Turning simulation in ABAQUS

Submitted by Manikandan_N on
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ABAQUS

Hi,

I have to perform thermomechanical analysis of turning process in ABAQUS as a part of my project.

Is there any documentation or tutorials available for it?

Kindly provide me with links if it is available.

Thanking in advance.

PFC 2D for discrete element modelling

Submitted by sadrish11 on
software

Dear all,

I have just started using PFC 2D. I want to generate stress/strain curve for a compaction test (oedometer test). I have designed the walls and the balls as particles. I have problem assigning the velocity of upper y-wall that will be used for compression and obtaining the stress/strain relationship as a graph. 

Please help.

Thanks

Sadrish Panthi

About beam element in abaqus and ansys

Submitted by baltkobe on
software
ABAQUS
ansys
Beam Element
yielding surface

I am interested in using beam element to do a nonlinear static analysis (may need to a dynamic analysis in the future), but have trouble to understand some of the key features of beam element in abaqus or ansys. My goal is to find a beam element (preferably general beam section) with a defined stress resultant yield surface (e.g., P-M-M yield surface). If possible, could also account warping degree of freedom.

ABAQUS

UMAT subroutine

Submitted by s_gupta on
software

Hey guys,      

               I'm new to using subroutines. I have installed the Intel Fortram Complier v10.1 and using it for running the subroutine UMAT. I am first testing the umat subroutine for Isotropic elasticity as given in the abaqus manual for a single element with one integration point, but I'm facing the following error:

Unexpected error 193

12/6/2010 2:14:08 PM

Abaqus Error: The executable D:\SIMULIA\Abaqus\6.10-1\exec\standard.exe

FEA Software that simulate lubricated contact using Reynolds equation

Submitted by mimo72 on
software

Hello,

 

I am working in lubricated contacts and I want to know if it is possible to simulate that on ABAQUS software using Reynolds equation. If possible how can it be done ?

If it is not possible, there is another software that can simulate this kind on contacts ? 

Thanks for the help. 

Student question:About Comsol PDE interface, it is possible to add a B.C at equilibrium state(t=inf)？

Submitted by Liang Tian on
software

I am working on a linear PDEs system. I know the equilibrium boundary condition. I 've searched the user's guide and all available PDE video. No  helpful information. I use 4.0 version. Thank you for your help.

 Regards.

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