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Simulation and Verification on the Drop Test of Mobile Phone Housing

机译:手机外壳跌落测试的仿真与验证

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摘要

Drop test performance has become one of the most crucial evaluations for Computer, Communication, and Consumer (3C) products. Both simulation tool and practical platform for drop test must be established for detailed study. A patented drop test platform is designed for the purpose of impact angle repeatability and instantaneous drop image capture at impact instance. These parameters are two crucial computer-aid-engineering (CAE) inputs used for drop impact simulations. Post data processing procedures such as sampling rate, and signal filtering specifications was also studied and found to be important for the accurate interpretation of drop simulations as well. It was found from simulations that a small angle variation (+-5°) may result in up to 36% difference in predicted internal stress. Accurate identification on the impact angle, therefore, is recommended as an important parameter on internal component stress calculation. Good consistency between measured acceleration data and simulated results verifies the practicality of the developed data processing procedure and numerical methodology.
机译:跌落测试性能已成为计算机,通信和消费类(3C)产品最关键的评估之一。必须建立用于跌落测试的仿真工具和实用平台,以进行详细研究。专利跌落测试平台的设计目的是为了实现撞击角度的可重复性和在撞击时瞬间捕捉下落图像。这些参数是用于跌落冲击模拟的两个关键的计算机辅助工程(CAE)输入。还对诸如采样率和信号过滤规范之类的后数据处理程序进行了研究,发现它们对于精确解释墨滴模拟也很重要。从仿真中发现,较小的角度变化(+ -5°)可能导致预测的内部应力相差高达36%。因此,建议在冲击角上进行准确识别,作为内部构件应力计算中的重要参数。测得的加速度数据与模拟结果之间的良好一致性验证了开发的数据处理程序和数值方法的实用性。

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