91制片糖心vlog玩偶传媒|91传媒天美传媒|亚洲成人久久精品国产|麻豆文化传媒免费欢迎你|91麻豆视频高清|采访麻豆传媒映画拍AV|国产天美传媒国产原创av剧情|91制片厂果冻传了|国产色多多网站|天美传媒欧美av果冻传媒,亚洲精品在线视频,蜜桃影像传媒牛年贺岁,亚洲精品一区在线看

Abstract: A tension test is used to investigate the mechanical properties of three magnetic materials for the magnetic torque, namely, ferronickel, ferro-cobalt, and ferro. aluminium. Because the three materials have different plasticities。their fractures should appear in different positions in the specimens, which are the weak positions, while for brittle materials, damages appear at the clip positions of the stress concentration. A finite element analysis shows that the length of the weak part and me stress concentration at the clip part determine the fracture position in the tension test. Thus, an improvement of the design is suggested with another round of simulation analysis. It is shown that for the improved specimens of three materials under the same conditions. the fractures all occur at their weak part. and are less affected by the stress concentration. The reasonable mechanical properties of these three materials can thus be obtained.