中文摘要：

目的研究物品跌落时的受力和结构变化,有助于改善物品的抗冲击性能,减小跌落破损概率,减少损失。方法采用基于SolidWorks的产品跌落仿真方法,仿真某型陶瓷水杯的跌落过程,仿真反映了产品跌落过程中各节点的速度、加速度和应力变化。结果杯子在19.365μs的垂直跌落过程中,最大应力在5.534μs时取得,始终在杯底的中部。在对杯子结构进行改进后,同一跌落高度下最大应力由临界破损应力1.720×10^8N/m^2降为1.549×10^8N/m^2,杯子受力得到显著改善。结论结合产品脆值的定义和应用,提出了应用跌落仿真预估产品脆值,指导产品设计和包装,可缩短产品开发周期,节约成本,提高产品质量。

英文摘要：

Objective To analyze the force and structure changes of falling objects, with the purposes of improving the shock resistance as well as reducing the drop breakage probability and damage. Methods Product falling simulation based on SolidWorks could vividly simulate the falling process of a certain type of ceramic cup, which showed the speed,acceleration and stress changes of each node during the dropping. Results The maximum stress occurred at 5.534 μs of the whole 19.365 μs vertical dropping process and kept acting on the center of the bottom of cup. After the cup structure was improved, the maximum stress was reduced from 1.720×10^8 N/m^2 of critical stress of breakage to 1.549×10^8 N/m^2. The strain on the cup was greatly improved. Conclusion Combining the definition and application of product fragility, product fragility estimation with dropping stimulation can be applied in product design and package guiding, which shortens the development period and reduces the cost while improving the product quality.