It researches the effects of unfitness defects of the welding joints of pressure piping at different places and different sizes on stress concentration by means of the finite element software ANSYS9.

• 采用有限元软件ANSYS9.；针对压力管道焊接接头出现的不同位置、不同尺寸条件下的错边缺陷；研究它们对焊接接头应力集中程度的影响；为压力管道的安全评定提供可靠的力学依据。；