This work presents an experimental investigation and a finite element analysis on the mechanical behavior of aluminum/magnesium composite plates. First, the mechanical tests of the base alloys and the welding joint of the composites were conducted, and the stress-cycle curve with a survival rate was obtained. Second, the failure mode was analyzed and its fracture mechanism of such composites was analyzed. Third, the load spectrum was converted to the stress spectra at the key positions for the body of a typical transportation vehicle fabricated using the materials. Finally, the fatigue life of such a body was calculated based on the finite element analysis, and the fatigue life showed much longer than the design life of base materials. The present study therefore provides a very practical methodology for potential applications in various industrial aspects such as civil and electrical engineering, and in particular, structural control, safety monitoring, and fault diagnosis.

中文翻译：

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铝镁复合板力学行为的有限元分析

这项工作对铝/镁复合板的力学性能进行了实验研究和有限元分析。首先，对基体合金和复合材料的焊接接头进行了力学测试，得出了具有存活率的应力循环曲线。其次，分析了破坏模式，分析了这种复合材料的破坏机理。第三，在使用该材料制造的典型运输车辆的车身关键位置，载荷谱被转换为应力谱。最后，基于有限元分析计算了这种车身的疲劳寿命，疲劳寿命比基础材料的设计寿命长得多。