液晶电视包装件跌落仿真及结构优化

Drop Simulation and Structure Optimization of LCD TV Package

目的在提升液晶电视包装泡沫抗冲击性能的基础上进行结构优化设计,以减少包装成本。方法利用HyperMesh建立带有包装的液晶电视整机有限元模型,并验证模型的有效性。依据企业跌落标准,采用LS-DNYA开展液晶电视仿真跌落分析,基于仿真结果运用OptiStruct对包装结构进行拓扑优化,最后对比优化前后的结果。结果仿真跌落分析中,前面和后面跌落工况下液晶电视的加速度峰值最大,分别为220.01g和183.40g。包装结构优化后加速度峰值均有所降低,其中后面跌落工况下降最大,为23.41%,同时优化后的结构相对原始结构质量降低6.73%。结论经过结构优化后的包装泡沫,有效提升了液晶电视在跌落冲击中的安全性能,降低了生产成本。

The paper aims to optimize the structure design of LCD TV packaging foam to improve its impact resistance and reduce its packaging costs. The finite element model of the LCD TV with packaging was built with HyperMesh and the validity of the model was verified. According to the drop test standard of enterprise, drop test simulations were conducted with LS-DYNA, and OptiStruct was used to perform topology optimization based on the simulation results. Finally, the results before and after optimization were compared. In the drop test simulations, the acceleration peaks of LCD TV were the highest in the front and back drop conditions, which were 220.01 g and 183.40 g, respectively.After optimization, the peak accelerations of the LCD TV in all conditions were decreased, and the back drop condition was the most, which was 23.41%. At the same time, the optimized structure was 6.73% lighter than the original structure.The structure optimization of the packaging foam effectively improves the safety performance of the LCD TV during the drop impact and reduces the production cost.