复合材料包装箱结构轻量化设计仿真技术研究

Lightweight Design and Simulation Technology of Composite Packing Box Structure

目的针对复合材料结构包装箱进行轻量化设计,使其在内压及堆码工况下,结构强度能够满足使用要求。方法针对局部非主承力位置进行改进,利用ABAQUS软件对包装箱的内压和堆码工况进行数值仿真分析,其中载荷工况安全系数均为1.5。结果包装箱理论质量减少了64 kg,减少比例约为5.4%。最大载荷应力为344 MPa,变形量为4.69 mm,均满足使用要求。结论包装箱结构轻量化后,在内压工况下各结构应力水平均有小幅上升,在堆码工况下各结构应力水平无明显变化,综上均处于安全范围,不会导致结构破坏。优化后的产品,实现了轻量化效果,理论证明结构改进安全可靠。可为国内类似复合材料包装箱轻量化结构改进提供数据支撑。

The work aims to carry out lightweight design to the composite structural packing box so that the structural strength of the box can meet the requirements of internal pressure and stacking conditions.The local non-main load-bearing positions were improved and ABAQUS software was used to conduct numerical simulation analysis on the internal pressure and stacking conditions of the packing box,and the factor of safety for load conditions was 1.5.The theoretical weight reduction of the packing box was 64 kg,and the percentage of weight loss was about 5.4%.Maximum load stress was 344 MPa and deformation was 4.69 mm,meeting the requirements of use.Since the lightweight design of the packing box structure is completed,the stress level of each structure increases slightly under the internal pressure condition,while the stress level of each structure does not change significantly under the stacking condition.In conclusion,the stress level of each structure is within the safe range and will not lead to structural damage.The optimized product has achieved a lightweight effect,and it is proven that the structural improvement is safe and reliable.It can provide data support for the improvement of lightweight structure of similar composite packing boxes in China.