库仑阻尼系统的冲击响应研究  

Shock response of a system with coulomb damping

作　　者：张萌[1] 张振山[1] 张文群[1] 

机构地区：[1]海军工程大学兵器工程系,武汉430033

出　　处：《振动与冲击》2010年第11期87-90,共4页Journal of Vibration and Shock

基　　金：国防十一五装备预研基金资助项目(1010501010302)

摘　　要：利用分段线性方法对含库仑阻尼系统的冲击方程进行了解析求解。研究发现,忽略库仑阻尼的粘滞作用,或对冲击激励进行速度阶跃等效,会造成冲击响应计算结果严重偏离正常值。利用仿真结果给出了库仑阻尼系统冲击响应的特点,得出库仑阻尼的加入可有效地提高冲击隔离器的抗冲性能。研究结果对于深入研究库仑阻尼系统冲击响应有重要参考价值和潜在的应用价值。Using a piecewise linear method,the analytical solution to a shock isolation system with coulomb damping was obtained.Further study revealed that considering a shock excitation as a velocity step equivalent or ignoring adhesive effect of Coulomb damping will lead to wrong results.Through simulations the shock response characteristics of the coulomb damping system were obtained,the results showed that coulomb damping is helpful in shock isolation if it is properly used.The study developed the theory for coulomb damping shock response.

关 键 词：冲击 响应 分段线性 库仑阻尼 

分 类 号：TB535[理学—物理]