随机连续杆纵向振动系统的频率可靠性分析

NATURAL FREQUENCY RELIABILITY ANALYSIS FOR RANDOM AXIAL VIBRATION OF ROD SYSTEMS

根据随机连续杆纵向振动系统的固有频率与激振频率差的绝对值不超过规定值的关系准则,定义了随机连续杆纵向振动系统的可靠性模式和系统的可靠度,提出了避免共振的频率可靠性分析方法,对随机连续系统共振问题的准失效分析方法进行了探索。

Parameter uncertainty of structural systems is inherent in most engineering problems. It is necessary to study the reliability of uncertain systems. Frequency analysis is important for reliability study of dynamically uncertain structures. In this paper, the criterion is used that the difference between the natural frequency and driving frequency should be less than a specific value. The reliability mode and the safety probability of the random axial vibration systems of rods are defined as a series mode, and the frequency reliability analysis method for avoiding the resonanse is proposed. The quasi-failure analysis method for resonant problem of the random axial vibration systems of rods is studied.