CAJ | 학술논문

提出结构分级有限元分析及其优化设计,对于大型复杂结构的优化设计有指导意义.该方法解决了复杂结构有限元自由网格划分单元畸形问题,减小了计算规模,提高了计算效率.结构分级方法以部件特征为研究对象,在优化过程中减少了设计变量,避免了不同数量级的尺度出现在一个数学模型中,提高了收敛速度.本文以某型号刮板输送机输煤槽为例,进行有限元分析和优化设计.数值计算结果表明,应用该方法设计的刮板输送机输煤槽取得很好的效果,提高了结构强度,改善了应力分布,减轻了重量,提高了经济效益.
제출결구분급유한원분석급기우화설계,대우대형복잡결구적우화설계유지도의의.해방법해결료복잡결구유한원자유망격화분단원기형문제,감소료계산규모,제고료계산효솔.결구분급방법이부건특정위연구대상,재우화과정중감소료설계변량,피면료불동수량급적척도출현재일개수학모형중,제고료수렴속도.본문이모형호괄판수송궤수매조위례,진행유한원분석화우화설계.수치계산결과표명,응용해방법설계적괄판수송궤수매조취득흔호적효과,제고료결구강도,개선료응력분포,감경료중량,제고료경제효익.
This paper gives the approach of hierarchical finite element analysis and its optimization.This method can be used to solve large complex structure efficiently.The mesh malformation can be eliminated considerably using the proposed method in this paper. Further problems in mathematical formaulation of optimization can be coped easily. Design variables in different levels can be circumvented and the total number of design variables can be decreased rationally.Thus the convergence speed and design efficiency can be enhanced.Some type coal supplying tank is designed through finite analysis and optimization adopting the proposed method. Numerical results show the validity of proposed approach. The structural stiffness is streng thened mproved and the stress distribution is averaged around the whole structure.At the same time, gross weight of part is decreased and thus good economic returns can be gotten.