全铝集装箱关键结构件的优化分析

Optimization Analysis of the Key Structures for Aluminum Container

针对货运集装箱轻量化需求,提出了一种全铝集装箱快速设计方案,并根据中国船级社集装箱检验标准,设计出一种以6061挤压铝型材为主要结构的20 ft集装箱。在此基础上,通过有限元方法进行集装箱在堆码后偏置测试时的静力学分析,结果表明后角柱是设计的关键结构。对后角柱进行了结构优化,设计了一种双孔嵌合型角柱,优化后的角柱最大应力与变形量明显下降,角柱未发生屈服且应力分布更加均匀。对比分析,修改后结构的力学性能明显改善,比钢箱质量减轻40%,满足设计要求。

For the lightweight demand of freight containers,a rapid design method of aluminum container is proposed.According to the container inspection specification of China classification society,a twenty feet container with 6061 extruded aluminum is designed.Furthermore,the stacking test is simulated using the finite element method,and the statistical analysis is carried out.The results show that the design of the rear corner column is the critical point.After structural optimization of the rear corner column,a matching corner post with two holes is designed.After optimization,the corner columns′maximum stress and deformation are reduced.The stress is lower than the yield strength.Besides,the stress distribution is more uniform.After comparison,the mechanical properties of the modified structure are improved,and the quality is reduced by 40%,which can meet the design requirements.