Dynamic Instability of a Simply-supported Arch Model with Elastic Restraints under Sudden Loading
This paper investigates the dynamic instability of a simply -supported arch model system with elastic restraints under sudden loading of infinite duration. When the system is subjected to a sudden loading,the load imparts kinetic and deformation energy to the system and induces it to os -cillate. When the loading is sufficiently large ,the oscillation may reach the unstable primary or sec -ondary equilibrium path of the system and the system experiences an escaping -motion type of buckling. Nonlinear dynamic buckling of the system model is investigated using an equation of motion method and an energy method in this paper. The energy criteria for the dynamic buckling loads are presented. It is found that using the energy method for dynamic buckling does not need the solutions of the equations of motion. The results for dynamic buckling loads obtained by the energy method , and by the equation of motion method ,are consistent with each other.
Yong-Lin PI Mark Andrew BRADFORD
Centre for Built Infrastructure Research , School of Civil and Environmental Engineering, University Centre for Infrastructure Engineering and Safety ,The University of New South Wales ,Sydney UNSW,NSW
国际会议
5th International Symposium on Environmental Vibration(第五届环境振动国际研讨会)
成都
英文
547-553
2011-10-20（万方平台首次上网日期，不代表论文的发表时间）