耦合结构中的功率流有限元法

基于杆和梁结构中的功率流有限元基本方程 ,提出了将功率流有限元法应用于耦合杆、梁结构中耦合点处节点和单元的具体处理方法 ,得到了耦合矩阵 .进一步将功率流有限元法应用于具有任意耦合角度的复合框架耦合结构 ,得到了结构内弯曲波和纵向波的能量分布以及能汇点 ,为振动控制的进一步实施提供了依据

Coupling Structure Analysis with Power Flow Finite Element Method

This paper was concerned with application of power flow finite element method (PFFEM) to coupled rod and beam system. While the primary variable energy density of PFFEM is discontinuous at the joint, a special procedure is needed to assemble the global matrix equations. In addition to place multiple nodes and insert joint element at the joint, a coupled matrix was obtained that is the most important step in application. Then, PFFEM was applied to the frame structure with the arbitrary coupled angles. The flexural and longitudinal energy transmission path and energy sinks of the frame structure are identified that are the valuable clues to the vibration control.