Transient response computation and application study on lock system in explicit dynamics

LI Zhi-xin1，2， LI Feng2， JI Shi-ming1， REN Hai-bo2， WU Fei-chang2
（1. College of Mechanical Engineering， Zhejiang University of Technology， Hangzhou 310014， China；
2. Ningbo Shuanglin Auto Parts Co.，Ltd.， Ningbo 315153， China）

Abstract： Aiming at obtaining the safety carrying mechanics of the car seat，the explicit dynamic analysis technique was introduced to all aspects of the design and research the car seat system. To ensuring the reliability and safety of the seat in a given position，the design of the seat safety lock was particularly focused. The seat lock bearing response behavior was studied on the finite element explicit dynamics model. Besides the explicit dynamic finite element analysis on the lock system，the physical trial was also carried on the lock system to obtain its reliability and safety. The results indicate that bearing behavior parameters of the lock，deriving from the design and the numerical simulation analysis，is consistent. The response behavior of the system can clear access by the explicit dynamic at any time，which is a major significance for the detailed study of system dynamics.
Key words： implicit dynamics； transient nonlinear response； lock component system； elastic-plastic modeling； structural modeling