Computational Mechanics Forum

Hi I am working on the designing of a crash test bench to measure vehicle door intrusions ?

Could some one provide me basic ideas on the test bench set up and how to mout the door on the test rig and which degrees of freedom to lock ?.

Hello,
I am a PhD student in Mechanical Engingeering.

I am currently studying the co-rotational formulation, following the theory on Crisfield's books. The next step in my project would be to apply the corotational formulation for the simulation of a beam, and my supervisor suggested me this could be done in ABAQUS through a User Defined Element Subroutine.

Hi everyone,

I modeled a dynamic implicit composite vibration analysis in Abaqus. Can any body tell how to extract the stiffness matrix from the odb file or from others?

Thanks

Pratik

Hi,

Could anyone share some idea on how to model a Surface Coating. I am using Abaqus Standard for the thermal analysis. For the coating, i tried to create a 'Skin' on the surface and assigned a Homogenous Shell section for the Skin. Is this correct? I couldn't see much difference in the results. Or is there any better way to model a surface coating?

Thanks!!

Dear Abaqus useres,
In my analysis I use B31OS finite elements integrated before analysis. My profile in Abaqus/CAE is defined by I profile option.

Where can I read the integrated properties of my cross section (total area, moments of intertia, torsional properties etc.)?

Thank you for help.

I'm trying to conduct a drop test analysis in abaqus where i have modeled a freely falling body as rigid with given mass  under gravity, the deformable body is to be analyzed as body inclines and falls on it but while viewing results it is observed that deformable body develop stress prior coming in contact with rigid, and stress is develped without contact. Please let me know how to solve this issue.

model notes:

A common general contact with penalty and normal "hard contact" behaviour in all bodies is appllied in dynamic step.

Dynamic Explicit Analysis step.

Hi Guys,

I've got a question regarding welding simulation. I'm modeling a plate of size 180*120*17mm and a moving heat source using Abaqus and DFLUX subroutine.
Therefore, I wrote the input file, define the properties, loads, convection and radiation, etc. I also wrote a FORTRAN code -DFLUX- for moving heat source.

Heat transfer is problematic. The heat transfers all the way to the plate surface at the the same time so basically it doesn't simulate a moving heat source. Do you have any idea what could have caused this?

Hello All,

Hello everyone,

I am currently working on a finite-element code for assemblies of bar/trusses undergoing large rigid-body motions. I have some knowledge about standard finite element coding but experience some severe trouble finding information about a rigid-body motion only finite elements (I plan to add small deformations and other features later).

I googled RFEM (Rigid-Finite Element Method) but didn't found any satisfying information.

So, I'll try to keep my questions quite general, but I can make it more precise