Energy Density Prediction of Random Structures using Perturbation Method

摘要：

　　To predict energy density response of random structures using EFEM,a perturbation method was introduced into governing equations of energy density for one-and two-dimensional structures.Two equation sets governing the energy density response of random structures were obtained.Simulations were carried for a plate with random damping ratio and the energy density response was obtained.It can be seen that EFEM provides space-and frequency-averaged response.Comparing with probabilistic method,the governing equation sets provide the same mean response and a smaller response range.The perturbation method using in EFEM turns out an effective method with less uncertainty and a promising method for response prediction for random structures.

关键词： energy density EFEM random structures perturbation method

作者: WANG Kun ZHAO Yang

作者单位: Department of Aerospace Engineering, Harbin Institute of Technology,Heilongjiang, China

会议类型: 国际会议

会议名称: 3rd International Conference on Frontiers of Manufacturing and Design Science(第三届制造与设计科学前沿国际会议(ICFMD))

会议地点: 香港

会议语种:英文

页码: 877-882

在线出版日期: 2012-12-11（万方平台首次上网日期，不代表论文的发表时间）