Hi ,

 I'm working on simulation of wave propagation in a bar. I'm using
newmark time integration scheme to solve my problem. I have a bae
clamped at one end and under tensile at the other end. when I decrease
my time step ,at the beginning of the loading I see tiny negative
strains which is so weird. I used some numerical damping with the scheme
and I could reduce the time step but still I have this problem in
smaller time steps. Can anyone help me with this?

  Thank you very much!!!

Hi, I am working on modeling wave propagation in ABAQUS/CAE.

I am not expert on ABAQUS and trying to figure out how it works.

I have a 2D Shell steel plate (1 centimeter by 1 centimeter) and try to obtain wave speed at any points of plate.

I put the material properties in and used ABAQUS/Explicit analysis.

Time steps are 1E-009 seconds and there are 2 steps (impulsed at the first step and propagates at the second step).

The load pluged at the amplitude with equaily spaced for 0.1 micro seconds (so it becomes impulse load).

The mesh was generated with element length of 0.0001 meter (so it becomes 10000 elements).

After the analysis, I checked the displacement of certain nodes and found arrival time.

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Hi,

     I am trying to simulate lamb wave propagation in steel plates using Ansys. I am completely new to this and would really appreciate any guidance with regards to examples or tutorials, speicifically for this problem. I know and am using the general tutorials out there. Thanks in advance for your help.

Haroon

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