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Simulation of Wear Processes in LS-DYNA

Quasi-static tests that are part of the federal regulations such as FMVSS 216 and FMVSS 207/210 is predominantly simulated using LS-DYNAs explicit solver. To be able to produce results in a reasonable time, mass-scaling and time-scaling are employed for these simulations, thereby the physics of the problem gets compromised. This paper demonstrates LS-DYNAs Implicit capabilities to solve quasi-static problems in a reasonable amount of time, without compromising physics. Recent development and improvements to the implicit solver enables us to solve problems such as this, accurately and with a run turn-around time that is inside the reactionary period of the design community. Two popular tests Roof-Crush and Seat-Pull tests were chosen for this exercise.