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首页> 外文期刊>International Journal of Pressure Vessels and Piping >Fracture behaviors of all-steel gas cylinder with different axial cracks
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Fracture behaviors of all-steel gas cylinder with different axial cracks

机译：不同轴向裂纹全钢气瓶的断裂行为

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摘要

Using the three-dimensional finite element method, the researches on the linear elastic and the nonlinear elasto-plastic fracture behaviors of all-steel gas cylinders with different axially oriented cracks were carried out. The crack mouth opening displacement CMOD and the crack driving forces for the cylinders containing axial deep cracks, which have the crack depth of 25%- 100% of the wall thickness, and the crack length of ten times the wall thickness, were obtained. The effects of the locationof the cracks (whether external or internal) and the shape of the through-thickness crack front (whether elliptical or straight front) on the crack driving forces are respectively quantified in the linear elastic deformation state and in theelasto-plastic deformation state.
机译：利用三维有限元方法，对不同轴向裂纹的全钢气瓶的线性弹性和非线性弹塑性断裂行为进行了研究。获得了具有轴向深裂纹的圆柱体的裂纹口张开位移CMOD和裂纹驱动力，这些裂纹深度为壁厚的25％至100％，裂纹长度为壁厚的十倍。在线性弹性变形状态和弹塑性变形状态下，分别量化了裂纹的位置（外部或内部）和贯穿厚度的裂纹前沿形状（椭圆形或笔直前沿）对裂纹驱动力的影响。州。

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