Effect of Difference in Acceleration and Velocity Change on Product Damage Due to Repetitive Shock
Effect of Difference in Acceleration and Velocity Change on Product Damage Due to Repetitive Shock
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DOI：
10.1002/pts.2026
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发表时间：
2014-03-01
影响因子：
2.6
通讯作者：
Ishikawa, Yutaka
中科院分区：
文献类型：
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作者：
Kitazawa, Hiroaki;Saito, Katsuhiko;Ishikawa, Yutaka
为了研究峰值加速度和速度变化的不同组合对重复冲击引起的损伤的影响，导致累积疲劳的产品，我们进行了跌落试验的包装类似于那些在实际运输中，从几个不同的跌落高度和两种缓冲材料。损伤边界曲线（DBCs），对应于每次冲击的损伤程度，准备调查的可能性，DBCs应用程序的重复冲击引起的损伤评估。在预测重复冲击引起的损坏时，如果仅根据峰值加速度和每次冲击损坏程度之间的关系，如先前报告的研究所进行的那样，跌落试验显示出错误的结果。在我们的研究中，虽然峰值加速度和速度变化的范围是有限的，但每次冲击的特定程度的损伤的DBCs准备。根据峰值加速度和速度变化预先确定的每次冲击的损伤程度准备DBC，可以提高预测累积疲劳对产品的重复冲击引起的损伤的准确性。版权所有（c）2013约翰威利父子有限公司
To investigate the influence of different combinations of peak acceleration and velocity change on repetitive-shock-induced damages leading to cumulative fatigue in products, we performed drop tests of products packaged similar to those in actual transportation, from several different drop heights and with two kinds of cushioning materials. The damage boundary curves (DBCs), corresponding to the degree of damage per shock, were prepared to investigate the possibility of DBC application for the evaluation of repetitive-shock-induced damage. The drop test showed erroneous results, when predicting repetitive-shock-induced damage, if based only on the relationship between peak acceleration and the degree of damage per shock, as have been carried out in previously reported studies. In our study, the DBCs for a specific degree of damage per shock were prepared, although the ranges of the peak acceleration and velocity change were limited. Preparation of DBC corresponding to the degree of damage per shock, as determined from the peak acceleration and velocity change beforehand, may increase the accuracy of predicting repetitive-shock-induced damage to products from cumulative fatigue. Copyright (c) 2013 John Wiley & Sons, Ltd.