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采用有限元分析软件一ANSYS软件,建立了7组不同情况下含平面缺陷的弯管有限元模型,对管道上裂缝进行了应力计算和分析,并采用GB/T1 9624-2004《在用含缺陷压力容器安全评定》标准对含裂缝缺陷的压力管道进行了简化评定。结果表明7组评定点均处于安全区域,故裂纹缺陷不影响管线正常运行。
Seven finite element models of elbows with planar defects were established by finite element analysis software ANSYS software. Stress calculation and analysis of cracks on the pipeline were carried out. The method of GB / T1 9624-2004 “ Pressure vessel safety assessment ”standard simplified assessment of pressure pipelines containing fracture defects. The results show that all seven evaluation points are in a safe area, so the crack defects do not affect the normal operation of the pipeline.