后峰锯齿脉冲激励下双曲正切包装系统的非线性动力学特性研究  

Nonlinear Dynamic Characteristics Research of Hyperbolic Tangent Packaging System under the Action of Final Peak Saw Tooth Shock Pulse

作　　者：洪翔 卢立新 

机构地区：[1]江南大学,无锡214122 [2]中国包装总公司食品包装技术与安全重点实验室,无锡214122

出　　处：《包装工程》2012年第11期60-62,共3页Packaging Engineering

基　　金：江苏省普通高校研究生科研创新计划(2011)

摘　　要：建立了二自由度的双曲正切包装系统模型,并应用四阶龙格-库塔法对得到的冲击动力学方程进行数值求解,研究了其冲击响应特性。采用后峰锯齿脉冲作为激励,得到了关键部件的三维冲击谱,进一步讨论了频率比、脉冲激励幅值、包装材料阻尼和脉冲周期对关键部件冲击谱的影响规律。结果表明,频率比、脉冲激励幅值、包装材料阻尼和脉冲周期均对关键部件冲击响应峰值有显著影响。Two degree-of-freedom nonlinear packaging system model was established. The shock dynamic equations were obtained and their numerical solutions were solved by the forth order Runge-Kutta integration method. The shock response characteristics of hyperbolic tangent packaging system with critical component were in- vestigated. Final peak saw tooth shock pulse was chosen as excitation in the computer simulation and three-di- mensional shock spectra of critical components were obtained. The influences of frequency ratio, amplitude of pulse excitation, package material damp, and shock period on shock response of critical components were discussed. The results showed that frequency ratio, amplitude of pulse excitation, package material damp, and shock period all have significant influence on the peak value of shock response of critical components.

关 键 词：二自由度 双曲正切包装系统 后峰锯齿波 关键部件 三维冲击谱 

分 类 号：TB485.1[一般工业技术—包装工程] TB487