摘要
根据随机结构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 ,定义随机结构振动问题的可靠性模式和系统的可靠度 ,提出避免共振的频率可靠性分析方法 ,应用随机摄动技术和可靠性理论 ,对随机结构系统共振问题的准失效分析方法进行探索。
Parameter uncertainty of structural systems is inherent in most engineering problems. There is very significance for the reliability investigation of the uncertain systems. Frequency analysis is important for reliability problems of dynamically uncertain structures. In this paper, the relation criterion of the difference that it is not beyond special value of the natural frequency and driving frequency is concerned. The reliability mode and the safety probability of the random systems are defined as series mode, and the frequency reliability analysis method for avoiding the resonant is presented. The quasi failure analysis method for resonant problem of the random structures is quested by using the random perturbation technique and the reliability theory.
出处
《机械强度》
CAS
CSCD
北大核心
2002年第2期240-242,共3页
Journal of Mechanical Strength
基金
国家自然科学基金资助项目 (1 9990 51 050 1 750 4 3)
973资助项目 (1 9980 2 0 32 0 )
教育部高等学校骨干教师资助计划资助
吉林省科技发展计划资助项目 (1 9990 50 1 0 1 )
关键词
随机结构振动
共振
频率可靠性
Random structural vibration
Resonance
Natural frequency reliability
