| 摘要: |
| 目的 研究智能手机以不同方式跌落时屏幕的安全性，根据跌落时力的传递方式和主要应力集中部位设计简单有效的防护措施，节约包装成本。方法 基于SolidWorks和Ansys Workbench软件对无防护智能手机水平跌落、竖直跌落和倾斜45跌落等3种极限情况进行仿真，根据结果设计防护措施，并进行仿真验证。结果 在水平、竖直、倾斜45等3种跌落工况下，手机屏幕均会发生应力集中，应力大小分别为80, 800, 120 MPa，屏幕出现破碎，在手机的4个角安装三脚形泡沫能够使冲击应力小于屏幕的强度极限。结论 在手机屏幕材料的选择时，要选择强度高、弹性好的玻璃材料，对手机进行包装运输时，对4个角安装三角形泡沫防护垫可以有效地保护手机。 |
| 关键词: 手机屏幕 跌落 应力 安全 |
| DOI：10.19554/j.cnki.1001-3563.2018.11.020 |
| 分类号:TB485.1 |
| 基金项目: |
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| Security of Mobile Phone Screen under Dropping Loadings |
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TANG Jue, JI Guo-xun, SUN Xin-Li, HANG Gui-yun
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Rocket Force University of Engineering, Xi'an 710025, China
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| Abstract: |
| The work aims to research the security of the screen when the smart phone drops in different ways, and save the packaging cost by designing simple and effective protection measures according to the transmission mode of the drop force and the main stress concentration point. Based on the SolidWorks and Ansys Workbench software, three kinds of limit scenarios of unprotected smart phone falling horizontally, falling vertically and tilting 45 degrees were simulated. According to the result, protective measures were designed and simulation verification was conducted. The stress (80, 800, 120 MPa) would concentrate on the mobile phone’s screen and the screen would be broken when the phone dropped in above-mentioned three ways. Installing triangle foam in the four corner of the phone enabled the impact stress to be less than the ultimate strength of the screen. In the selection of mobile phone screen material, the glass materials of high strength and good elasticity should be selected. Installing triangle foam protective pad for the four corners can effectively protect the phone when the phone is packaged and transported. |
| Key words: mobile phone screen falling stress security |
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