Numcrical calculations show that the impact compression effect of spring is important for dynamic strain of the fixedend.
分析结果表明，考虑弹簧冲击压缩效应与否，对弹簧固定端动态应变历程有很大影响。
2
A permanent magnet and a moving contact are fixed on a swing plate which can deflect, and the top end of the swing plate is hung on a coil brace through a spring.