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Evaluation of stress intensity factors of thin AZ31B magnesium alloy plate under biaxial tensile loading

Evaluation of stress intensity factors of thin AZ31B magnesium alloy plate under biaxial tensile loading
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摘要 Stress intensity factors of thin AZ31B magnesium alloy sheet under biaxial tension loading were analyzed by modified Dugdale model. K-values with crack angle of 90° obviously show that there is no influence of the loading condition in Mode-I. In the 45° case, K1 values are obtained within 10% errors when they are calculated by modified Dugdale model under biaxial loading. It is concluded that the modified Dugdale model is one of effective ways to evaluate stress intensity factor of AZ31 magnesium alloy sheet appropriately. Stress intensity factors of thin AZ31B magnesium alloy sheet under biaxial tension loading were analyzed by modified Dugdale model.K-values with crack angle of 90°obviously show that there is no influence of the loading condition in Mode-I.In the 45°case,K Ⅰ values are obtained within 10%errors when they are calculated by modified Dugdale model under biaxial loading.It is concluded that the modified Dugdale model is one of effective ways to evaluate stress intensity factor of AZ31 magnesium alloy sheet appropriately.
出处 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2010年第7期1282-1287,共6页 中国有色金属学报(英文版)
关键词 Mg alloy PLATE cross-rolling isotropic material biaxial tension stress intensity factor AZ31镁合金板材 AZ31B镁合金 应力强度因子 拉伸载荷 Dugdale模型 评价 加载条件 影响模式
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参考文献16

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