地下冷库中弹性支座杆件的动力稳定性分析  

Analysis of dynamic stability with elastic support bars in underground low-temperature cold store

作　　者：吕书清[1] 

机构地区：[1]哈尔滨商业大学土木与制冷工程学院,哈尔滨150028

出　　处：《哈尔滨商业大学学报（自然科学版）》2008年第4期493-495,共3页Journal of Harbin University of Commerce：Natural Sciences Edition

摘　　要：研究了杆件具有弹性支座时直杆的动力稳定性问题,通过推导杆件的临界频率和动力不稳定边界,分析了弹簧刚度和阻尼对杆件动力稳定性的影响,研究表明杆件的侧向刚度愈大其结构的动力稳定性愈好,阻尼对杆的振动起有利作用,并分析了地下低温冷库建筑中杆件具有弹性支座时直杆的动力稳定性问题.In this paper, problems of dynamic stability of members with elastic support are investigated. The critical frequency and unsteadiness border of bars aere derived. The effects of spring stiffness and damping on dynamic stability of bars are studied. Research indicate that the side direction stiffness of members more greatly dynamic stability of structure more better, the advantageous effect is taken in the vibration to members of damping, and analysis dynamic stability of members with elastic support in underground low-temperature cold store.

关 键 词：动力稳定性 弹性支座杆件 弹性刚度 阻尼 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]