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Analysis of K_1(t) for Edge Cracked Beam

机译:边缘裂纹梁K_1(t)的分析

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摘要

In this paper the dynamic stress intensity factor of the edge cracked beam under dynamicrnloading is obtained analytically. The crack cross section of the beam is considered as boundary condition, thenrnthe dynamic stress intensity factor can be worked out through the initial boundary value problem and thernconstitutive relation of the line-spring model. The agreement between the results of analytical method and finiternelement method for the sample impacted by Hopkinson pressure bar shows that the analysis method presentedrnin this paper provides a reasonable simple analysis method of DSIF for the experimental determination ofrnmaterial dynamic initiation toughness.
机译:通过分析求得了动态荷载作用下边裂梁的动应力强度因子。将梁的裂纹截面作为边界条件,然后可以通过初始边界值问题和线弹簧模型的本构关系求出动应力强度因子。霍普金森压力杆冲击样品的分析方法与有限元方法的结果吻合,表明本文提出的分析方法为测定材料的动态起始韧性提供了一种合理的简单的DSIF分析方法。

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