航天器环境工程2025，Vol.42Issue(2)：181-190,10.DOI:10.12126/see.2024101
高量级冲击试验中橡胶波形发生器动力学特性分析
Dynamic characteristics analysis of rubber waveform generators in high-grade impact testing
摘要
Abstract
In response to the extreme shock environments encountered during spacecraft launch,explosive separation,and landing,a nonlinear dynamic model based on the Duffing equation was proposed for the precise prediction and control of half-sine waveforms generated by rubber waveform generators in high-grade impact testing.The dynamic equation for the waveform generator was derived based on a nonlinear elastic force model;the Runge-Kutta method was employed for numerical solutions.By applying the principle of equivalent stiffness,a numerical simulation model of the waveform generator was established,and half-sine waveform simulations were conducted using a pneumatic impact testing machine.Based on the shock test data,a local search optimization algorithm was used to optimize the model parameters.The test validation results demonstrate that the predicted acceleration peak and pulse width closely match the experimental results,with errors less than 10%and 5%,respectively.This model provides a theoretical foundation and technical support for the prediction and control of waveforms in high-grade impact testing.关键词
半正弦波形发生器/非线性动力学/冲击试验/等效刚度/数值仿真/参数优化算法Key words
half-sine waveform generator/nonlinear dynamics/impact testing/equivalent stiffness/numerical simulation/parameter optimization algorithm分类
力学引用本文复制引用
任志强,李新明,沈志强,晏廷飞,刘闯,杨艳静..高量级冲击试验中橡胶波形发生器动力学特性分析[J].航天器环境工程,2025,42(2):181-190,10.基金项目
装备发展部研发项目 （）
