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以铝合金手机后壳为研究对象,采用珠优化方式对其刚度进行了优化设计。以单元最大应变能为优化目标函数,在特定的设计响应和约束条件下,通过将目标函数最小化优化,实现手机壳刚度的最大化优化目标。分别探讨了6组最大珠宽度为2,3,4,6,10和20 mm的优化结果。结果表明,手机壳刚度与珠状结构宽度呈非线性关系,珠状结构的宽度小于8倍单元边长时,优化后的壳体刚度值随着宽度的增加而增大,当珠状结构的宽度大于8倍单元边长时,优化后的壳体刚度值随着宽度的增加而减小。
With the rear case of aluminum alloy cell phone as the research object, the optimal design of the stiffness of the cell phone is optimized by using the bead optimization method. Taking the unit maximum strain energy as the optimization objective function, under the specific design response and constraint condition, the optimization of mobile phone case stiffness can be maximized by minimizing the objective function. Six groups of optimal bead widths of 2, 3, 4, 6, 10 and 20 mm were discussed respectively. The results show that there is a nonlinear relationship between the stiffness of the mobile phone shell and the width of the bead structure. When the width of the bead structure is less than 8 times the unit length, the optimized stiffness value of the shell increases with the width increasing. When the width is greater than 8 times the unit length, the optimized shell stiffness decreases with increasing width.