摘要
确定区间参数结构动力特性和静响应最值可以很好地解决某些结构的不确定问题。结构的动力特性和静响应往往与参数之间存在着密切的联系,给出它们之间的内在联系可以使得区间参数结构的动力特性和静响应最值计算变得简单、有效。文中通过公式推导弹性模量E和质量密度ρ与结构动力特性和静响应相关的结论,并以桁架结构的动力特性作为算例,分别计算了单工况荷载作用下,加载点方向和非加载点方向的位移最值,比较了它们的参数取值,并验证了弹性模量E与加载点方向位移的关系。
Determining the interval parameters of structural dynamic characteristics and the extreme value of static response can solve some structural uncertainties. The dynamic characteristics and static response of structures are always closely linked with the parameters. Finding the intrinsic link between them can make the calculation of the dynamic characteristics and the extreme value of interval structure simple and effective. Through function derivation of elastic modulus E and mass density p, it can be found that they are related to structural dynamic characteristics and static response. And the dynamic characteristics of trusses are taken as an example to calculate the maximum displacements of loading direction and unloading direction, their parameters are compared and the relation between elastic modulus and the displacement of loading direction are verified.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2013年第12期57-63,共7页
Journal of Chongqing University
基金
国家自然科学基金创新群体基金资助项目(50921063)
关键词
区间参数
动力特性
最值
interval parameters； dynamic charaeteristics； extreme value
