含腐蚀缺陷燃气管道极限载荷的有限元分析

Element analysis on limit load of corroded fuel gas pipelines

利用有限元弹塑性分析方法,对含腐蚀缺陷的燃气管道进行了非线性分析,研究了腐蚀缺陷的长度、宽度和深度对燃气管道极限载荷的影响.并和含腐蚀缺陷管道的全尺寸爆破试验结果以及ASME B31G计算的结果进行对比,证明有限元方法在分析腐蚀缺陷管道的可行性.

In the paper, the systematic nonlinear analysis has been carried out to the Fuel gas pipelines with corrosive defects by the analysis method of the finite element elastic-plastic, and it has been researched that the impact on the limit load of fuel gas pipeline from the corrosion defect of length, width and depth of the pipeline. The result from the burst test of full dimension with corrosion defect pipeline has been compared with the result from ASME B31G calculation,after that,it has been proved that the finite element method can be used for analyzing the feasibility of the pipeline with corrosive defects.