I am trying to compare different shell element formulations in Abaqus/Explicit and I stumbled upon an energy growth issue. Here are the specifics of my test case:
-2m x 2m rectangular plate with 5mm thickness
-Element size 0.1m x 0.1m (total of 400 elements)
-All edges fixed (U1 = U2 = U3 = UR1...
Hi,
I am modeling a beam with trapezoidal section in Abaqus/CAE. The default number of integration points for this section is 5 x 5. Is it possible to change the number of integration points in CAE, and if it is possible then how can I do it?
-henki
Hi.
I modelled a 500 x 500mm plate with fixed constraints in edges using ABAQUS/Cae. I included two T-beams (50 x 50mm) to the plate as stiffeners. In my first model I used only 4-node shell elements (in both the plate and the stiffeners). In my second model I included the stiffeners as...
Hi,
are there any guidelines for element size/mesh density when performing impact/crash analysis?
With plastic material behavior, the stresses do not grow infinitely as the mesh density is increased. However, sometimes very fine mesh is needed to obtain converged solution, which results in...
Hi.
As far as I know, the time step size in explicit dynamics depends on the characteristic length "L" of an element and the wave speed "c" as follows: delta_t = L / c. This is also explained in the following link: http://www.dynasupport.com/tutorial/ls-dyna-users-guide/time-step-size
I have...
Hi,
I am interested in explicit dynamics (crash and impact problems). If I would want to create my own explicit FE solver (hydrocode), which formulation would be optimal for speed: total or updated Lagrangian? As far as I know, nearly all commercial software are in updated Lagrangian (for...
I am currently using CalculiX as my FE solver. I already asked this question in CalculiX forum, but it does not hurt to ask it here also.
My problem is to model a steel box with blast loading inside of it. The problem includes great plastic strains, high strain rates and thermal softening. The...
