headform drop test ABAQUS
headform drop test ABAQUS
(OP)
Hi everyone
I am relatively new to abaqus and am trying to simulate a headform drop test onto firstly an unyielding surface and later a variety of third generation turf systems.
Would anyone be able to suggest the best way to obtain acceleration outputs from the centre of gravity of the headform (i.e. 'the accelerometer')? Currently I have tried constraining a node at the CoG and fielding A3 history outputs but have somehow managed to output both positive and negative acceleration when it should only have a deceleration peak.
Any help into the steps anyone would take would be appreciated.
Thanks
I am relatively new to abaqus and am trying to simulate a headform drop test onto firstly an unyielding surface and later a variety of third generation turf systems.
Would anyone be able to suggest the best way to obtain acceleration outputs from the centre of gravity of the headform (i.e. 'the accelerometer')? Currently I have tried constraining a node at the CoG and fielding A3 history outputs but have somehow managed to output both positive and negative acceleration when it should only have a deceleration peak.
Any help into the steps anyone would take would be appreciated.
Thanks





RE: headform drop test ABAQUS
Rob Stupplebeen
https://sites.google.com/site/robertkstupplebeen/
RE: headform drop test ABAQUS
RE: headform drop test ABAQUS
It does look like ringing. Here are my suggestions in the order I would try them.
1. If I remember the DOT and DOD use a steel headform inside a helmet that is dropped onto concrete. I would start with concrete as the floor and go stiffer from there. The slight 'give' sometimes does wonders for these analyses.
2. Model the head as the test will be performed. If you are using a dummy try to model that starting simple then increase complexity from there.
3. Damping either material or global may be needed. Even the air damps the system.
I hope this helps.
Rob Stupplebeen
https://sites.google.com/site/robertkstupplebeen/