I am using *Part_inertia keyword to modify the center of mass of rigid body. I have appropriately calculated the inertia tensor. But, stuck with TM=translational mass. If I ingore TM, Dyna estimates mass of the rigid body to be zero. Please advice how to define, the parameter TM.
*PART_INERTIA
$# TITLE
RIGID BODY
$# PID SECID MID EOSID HGID GRAV ADPOPT TMID
2 2 2 0 0 0 0 0
$# XC YC ZC TM IRCS NODEID
-0.25 -0.25 0.0 ? 1 0
$# IXX IXY IXZ IYY IYZ IZZ
28.9063 -15.6250 0 28.9063 0.0 57.8126
$# VTX VTY VTZ VRX VRY VRZ
0.0 0.0 0.0 0.0 0.0 0.0
$# XL YL ZL XLIP YLIP ZLIP CID
0.0 0.0 0.0 0.0 0.0 0.0 1
Did you try to define TM just as the mass of the rigid body that you are working on? Just try. Nothing to lose
Amr Shaaban As suggested, I defined Tm as rigid body mass, but what I observed is (1) when probed the only rigid mass, it matches with TM, (2) the overall mass of the system is reduced.
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