摘要
首先讨论了随机振动的可靠性,然后使用一次摄动法,借助于系统的频响函数对可变阻尼参数的一阶灵敏度的关系式,导出了由随机载荷谱计算的结构可靠度指标的一次变化率,并为结构进行优化提供了可靠的约束条件。以车辆振动的二自由度的简化模型为例,其计算结果是满意的。
The reliability of random vibration is discussed,and then by using the first order perturbation method and with the aid of relation of the systemic response function to the first order sensetivity of variable damp parameter, the rate of change of structural reliability indication is derived, therefore the constraint equation to guarantee reliability for the structural optimization design is proved and the satisfactory result is obtained,test and the practicability of this method is tested.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
1991年第4期8-15,共8页
Journal of Chongqing University
基金
国家自然科学基金
关键词
随机振动
可变阻尼
可靠性
车辆
random vibration
reliability
variable damp
sensetivity analysis
the first order perturbation
