A METHOD BASED ON MODAL ANALYSIS FOR THE RESEARCH OF IRREGULAR TORSION OF STRUCTURES
Modal analysis is mainly applied in the problem of structural dynamics issues,it is seldom occurred to use it in general theoretical research of structures. Actually,the quantities of the frequency vector relate to the distribution of the absolute stiffness and mass of a structure,and the mode vector reflect the distribution of the relative one. Comparing with the strain and stress parameters,which reflect the mechanical characteristics of the members of a structure,the frequency and mode parameters of a structure which not involving load combination grasp the mechanical behaviors of structures wholly or partly in macroscopic view,which suit to guide concept design and constitution design of structural system.For these reasons,this paper starts with the study of irregular torsion of structures,and concentrates efforts on quantitative analysis of the vibration modes and research of structural obscure concept demarcation based on vibration modal analysis,in order to provide a new way for the method of structural concept design and to provide theoretical support for establishing a method to structural concept design which based on inherent characteristics of structures.
Concept design Modal analysis Modal participating mass ratio Irregular torsion
Dong-Wei Wang Chang-Yun Han
College of Civil Engineering,Zhengzhou University,Zhengzhou 450002,P.R. China
国际会议
The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)
广州
英文
763-768
2010-12-01（万方平台首次上网日期，不代表论文的发表时间）