所属单位：

机电工程学院

发表刊物：

Proceedings - 3rd International Conference on Measuring Technology and Mechatronics Automation

关键字：

中文关键字：管道裂纹;模型修正;应力强度因子;，英文关键字：pipe crack;model modification; stress intensity fa

摘要：

Pipe plays an important role in the petrochemical industry. Developing pipe testing technique can avoid or decrease accidents and is an important guarantee for the safety service of pipe. In this paper, a method is presented to identify crack location and size, which is based on the finite element method (FEM) and model modification. Pipe structure is dispersed into a series of nested thin-walled pipes. By making use of stress intensity factor of the thin-walled pipe, the equivalent stiffness of pipe crack may be calculated. On this basis, the finite element method is used to establish the dynamic model of cracked pipe, and the model is efficiently modified by simulation and experiment. Then a quantitative diagnostic method of crack is constructed by combining forward problem and inverse problem, which provides a non-destructive testing technology with vibration for the pipe structure. The efficiency of the proposed method is verified by experiments.

备注：

何育民

合写作者：

叶俊杰,何正嘉

第一作者：

何育民

论文类型：

期刊论文

卷号：

卷：3

期号：

期：

页面范围：

页：63-66

是否译文：

否

发表时间：

2011-01-01