基于显式计算方法的锁块抗载瞬态动力响应分析

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

针对汽车座椅的安全承载问题,将显式动力学分析技术应用到汽车座椅设计的各个环节。为了保证座椅在任意位置的安全可靠性,安全锁的设计尤其重要,研究中建立了精细的座椅安全锁显式动力学模型,深入研究了锁块承载性与响应行为之间的关系;在有限元显式动力学分析的基础上,对锁块系统开展了物理实验研究。研究结果表明,锁块的设计参数与数值仿真分析的试验参数基本保持一致,而且采用显式动力学能够清晰地获取系统任意时刻的响应行为,这对于系统的动力学特性研究有重要的意义。

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.