摘要
为了解决某型号手机无伞空投跌落过程中内部器件损伤以及过载问题,设计了由硬质聚氨酯泡沫和聚碳酸酯材料组成的3层结构手机包装盒,并建立手机及其包装模型进行跌落仿真数值模拟,获得了相同速度不同姿态跌落下手机器件以及包装盒等效应力分布以及手机最大加速度曲线。结果显示,以相同的速度进行跌落时,硬质聚氨酯泡沫包装盒的手机最大过载仅是发泡聚丙烯包装盒中手机的14%和聚氯乙烯包装盒手机的1%。当装有手机的硬质聚氨酯泡沫包装盒以15 m/s的速度进行不同姿态的跌落仿真时,结果显示手机接触屏在跌落过程中的应力峰值最大,而LCD显示器最容易受损。其中,面跌落姿态下各个部件的等效应力峰值最小,表明在该姿态下包装对手机的保护效果最佳。因此在相同速度下对硬质聚氨酯泡沫包装盒进行无伞空投时,以面姿态跌落对手机的防护效果最好。研究工作可为空投军用电子产品提供理论参考。
To solve the problem of internal device damage and overload during the drop of a certain model of mobile phone without umbrella,a three-layer structure smartphone packaging box composed of rigid polyurethane foam and polycarbonate material was designed,and the smartphone and its packaging model were established.Then the equivalent stress distribution and maximum acceleration curve of the mobile phone device and the packaging box under the same speed and different attitude drop were obtained.The results show that when the surface drops at the same speed,the maximum overload of the smartphone in the rigid polyurethane foam box is only 14%of the smartphone in the foam polypropylene box and 1%of the smartphone in the polyvinyl chloride box.When the rigid polyurethane foam box containing the mobile phone was simulated with different posture at a speed of 15 m/s,the results showed that the stress peak of the mobile phone contact screen was the largest during the fall process,and the LCD display was the most vulnerable to damage.Among them,the equivalent stress peak of each component in the face drop attitude is the smallest,indicating that the packaging has the best protection effect on the mobile phone in this attitude.Therefore,when the rigid polyurethane foam packaging box is dropped without an umbrella at the same speed,the protection effect of the mobile phone is the best.This research can provide theoretical reference for airdropping military electronic products.
作者
罗贤
常利军
郭程旺
陈泰伟
蔡志华
LUO Xian;CHANG Lijun;GUO Chengwang;CHEN Taiwei;CAI Zhihua(Sanya Institute of Hunan University of Science and Technology,Sanya 572024,China)
出处
《兵器装备工程学报》
北大核心
2025年第9期168-178,共11页
Journal of Ordnance Equipment Engineering
基金
国家自然科学基金项目(12372356)。
关键词
器件损伤
最大过载
无伞空投
硬质聚氨酯泡沫
手机包装
device damage
maximum overload
free drop
rigid polyurethane foam
smartphone packaging
