充液管道模态的参数灵敏度及其共振可靠性分析  

Parameter sensitivity and resonance reliability of a fluid-filled pipeline

作　　者：黄益民[1] 刘伟[1] 刘永寿[1] 岳珠峰[1] 

机构地区：[1]西北工业大学工程力学系,西安710129

出　　处：《振动与冲击》2010年第1期193-195,共3页Journal of Vibration and Shock

基　　金：国家高技术研究发展专项(863计划)(2007AA04Z404);国家自然科学基金(10472094);博士点基金(N6CJ0001);西北工业大学研究生创业种子基金(Z200932)

摘　　要：分析充液管道模态的参数灵敏度,并对充液管道的共振可靠性进行了研究。首先考虑管道与液体之间的耦合作用,利用有限元软件对所建立的简单管道系统进行模态计算。然后假设管道结构参数服从某种随机分布,分析了对应的一、二阶模态的概率分布并讨论了这些参数对管道固有频率的灵敏度影响。最后利用干涉理论对流固耦合管道系统进行了防共振可靠性分析。该研究结果可为管道防共振设计和管道的共振可靠性评估提供了参考。Here in,the parameter sensitivity and resonance reliability of a fluid-filled pipeline was studied.Considering fluid-structure interaction(FSI),using FEM software,a fluid-filled pipeline system was modeled and the system's modal analysis was done.Then,random distribution patterns of the pipe structure parameters were given,and the probability distributions of the first and second modes were analyzed,and the influences between these parameters and the pipeline system's natural frequency sensitivity were also discussed.Finally,the interference theory was used to perfrom the FSI pipeline system's anti-resonance reliability analysis.The results could help anti-resonance design and reliability estimation for fluid-filled pipelines.

关 键 词：充液管道 流固耦合 干涉理论 参数灵敏度 共振可靠性 

分 类 号：O353.4[理学—流体力学]