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文章以J23—80B开式压力机为例,对其机身进行有限元剖分,并对其用Wilson—θ法进行动态有限元计算,结果表明机身主截面的动应力和动态角变形均比静载下大25%左右。
Taking the J23-80B open press as an example, the finite element analysis of its fuselage is carried out. The dynamic finite element method is used to calculate the dynamic stress of the main section of the fuselage and dynamic angular deformation 25% more than static load.