Modal Analysis of Mechanical System Containing Nonlinear Joint
The paper describes modal analysis of lifting platform usually used in theatre technologies. The platform itself consists of several components mutually connected by joints. The behavior of particular joints can be linear or nonlinear. The connection of two main parts-tables and pillars of lifting platform-must be considered as nonlinear because the force transfer between these parts can occur only in one direction. Since standard modal analysis is in principle linear, the method of linear description of nonlinear behavior has to be proposed. The contribution presents such method using application of three different boundary conditions which allow describing the nonlinear behavior of system by tools of linear analysis. Consequently, the modal analysis of the entire system is performed for all three types of boundary conditions. On the base of mode shapes visualization the proper mode shapes are extracted which satisfy the real behavior of the lifting platform.
Lifting Device Mode Shape Natural Frequency Modal Analysis
PORUBA Zdenek SZWEDA Jan
Technical University of Ostrava, 17. listopadu 15, 708 33 Ostrava-Poruba, Czech Republic
国际会议
上海
英文
244-249
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）