双曲正切包装系统关键部件破损评价理论研究

Damage Evaluation of Hyperbolic Tangent Nonlinear Packaging System with Critical Component

建立二自由度非线性产品包装系统模型,得到冲击动力学方程并数值求解,研究了双曲正切包装系统关键部件的矩形脉冲响应特性。运用数值求解得到关键部件破损边界曲面,并讨论了名义频率比、阻尼、脉冲激励幅值和系统参数对关键部件破损边界的影响规律,结果表明,频率比、阻尼、脉冲激励幅值和系统参数对关键部件破损边界影响显著,研究结论为产品包装设计提供科学依据。

The shock characteristic of the hyperbolic tangent nonlinear packaging system with critical component were investigated under the action of rectangular acceleration pulse.The dynamical model of the system was developed,and the numerical results of the dynamical equations were got.The damage boundary surface of critical component was obtained based on the results.And the effect of the pulse duration,the frequency ratio,the dmaping ratio,the pulse peak acceleration in additional to the defined system parameter on the DBS of critical component was discussed.It＇s shown that all of their effects are noticeable.The results lead to some insights into the design of cushioning packaging.