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Impact on concrete slab

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Efstia

Structural
May 30, 2014
20
Dear all,

I am attempting to model an impact test using Abaqus. I have modeled a projectile falling from a distance of 10 meters using solid elements. The gravity was modeled though the dynamic explicit step. I have also used surface to surface contact with a friction coefficient of 0.2. My results show correct deflections but the impact force time history presents a peak does without damping. The acceleration graph is also a bit weird.

If anyone has any experience using Abaqus and provide me with any advice I would appreciate it.

Thank you.

Stath.

 
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Hi IceBreakerSours,

I have introduced a damping of 5% by experience according to Abaqus documentation and a value for mass proportional Rayleigh damping factor was provided based on mode of vibration. I am afraid that I am doing something wrong with my contact analysis. I have used surface to surface instead of general contact to have more control of the contacts. I also have used the penalty contact method instead of kinematic. But again the results with both analysis look almost the same.

Thank you for your quick response.

Thanks.
 
Can you post the graphs (force and acceleration vs. time) with explantions of what part / point are they for.
 
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