多框式箱体结构力学特性仿真分析

目的 针对不同运输包装框架进行力学特性分析，为同类的包装箱体框架结构设计提供精确可靠的设计方案。方法 以实际的2款箱体结构为例，根据不同类型的结构特征进行物理结构设计参数输入，然后分别对其进行大变形下的力学仿真分析，得到2类框架结构的静力学特性，总结得到该类框架结构的静力学结果，通过模态叠加法得到不同频率下的结构动力学响应结果，以前9阶模态为整个框架结果振动传递能量为对比进行2类框架的结果对照分析，最终对2类包装框架的力学仿真结果进行分析，实现整个过程的良性评价。结果 通过静力学结果分析，可知X形框架在大变形堆码状况下更具优势，而Y形框架在15~48 Hz中频段运输过程中更具优势，实现了不同包装环境下的多框式结构力学特性的客观分析。结论 通过使用有限元仿真的方法全面性地对2类箱体结构进行了力学特性分析，为运输包装框架设计提供了参考。

Mechanical Characteristics and Simulation Optimization of Multi-frame Box Structure

The work aims to analyze the mechanical characteristics of different transportation packaging frames and provide accurate and reliable design solutions for similar packaging box frame structures. Taking two actual box structures as examples, physical structure design parameters were inputted based on different types of structural characteristics. Then, a mechanical simulation analysis was carried out on them under large deformation to obtain the static characteristics of the two types of frame structures. The static mechanical results of the two types of frame structures were summarized. The dynamic response results of the structure at different frequencies were obtained through the modal superposition method. The vibration transmission energy of the first nine modes was compared with the results of the entire frame to conduct a comparative analysis of the results of the two types of frames. Finally, the mechanical simulation results of the two types of packaging frames were analyzed to achieve a benign evaluation of the entire process. Through the analysis of static results, it was known that the X-shaped frame had more advantages in large deformation stacking conditions, while the Y-shaped frame had more advantages in the frequency range of 15-48 Hz during transportation, achieving objective analysis of the mechanical characteristics of multi frame structures in different packaging environments. In conclusion, the mechanical characteristics of two types of box structures are comprehensively analyzed using finite element simulation, providing reference for the design of transportation packaging frames.