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三、机架上部三维有限元分析 1.力学模型在上述二维有限元分析中,是把机架上横梁圆柱部分简化为等刚度厚度来计算的,有一定的近似性。它没有考虑x方向(机架厚度方向)的结构形状和尺寸,因而不能精确地给出横梁各部分的应力及变形,对上圆角的应力也有一定的影响。
Three-dimensional finite element analysis of the upper part of the rack 1. Mechanical model In the above two-dimensional finite element analysis, the rack is to simplify the column part of the beam stiffness to calculate the thickness, with some similarity. It does not consider the shape and size of the x-direction (the thickness of the frame), so it can not accurately give stress and deformation of each part of the beam, and also has some influence on the stress of the upper corner.