关键词：ANSYA 可靠度 模态分析 框架结构 桁架桥梁 振动
Abstract
This paper analyzes the background and significance of using ANSYS finite element analysis software to analyse the frame sturcture , and meanwhile, expounds the importance of the technology and the prospect of development. This paper also provides some theories,such as the reliability analysis of ANSYS, the function of probability analysis, the modal analysis , the transient response analysis, the theory of earthquake and so on . Firstly, simplifies the model of truss bridges and frame sturcture of buildings, and creat the model , then makes a vibration process simulation of frame structure, after that, with the principle and method of above , I make out an acorresponding conclusion through the cleaning and summarizing of the results .This paper offers two examples , the frame sturcture of buildings and truss structure of bridges, and chooses the appropriate materials and parameters of structure, then simplified model, and finally make the modal analysis，and offer a contribution for the reliability analysis.
