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以三维实体元和空间模元为基础， 建立了Ｊ２１１００ 型压力机机身有限元模型和机身结构优化的数学模型， 编制了有关程序并进行数值分析。有限元分析表明， 本模型行之有效， 优化结果理想
Based on the 3D solid element and the spatial element, the mathematical model of the finite element model of the J21100type press body and the optimization of the fuselage structure was established. The relevant program was compiled and the numerical analysis was carried out. Finite element analysis shows that this model is effective and the optimization result is satisfactory