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首页> 外文期刊>International Journal of Solids and Structures >SHOCK-EXCITED VIBRATIONS OF A CONSERVATIVE DUFFING OSCILLATOR WITH APPLICATION TO SHOCK PROTECTION IN PORTABLE ELECTRONICS
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SHOCK-EXCITED VIBRATIONS OF A CONSERVATIVE DUFFING OSCILLATOR WITH APPLICATION TO SHOCK PROTECTION IN PORTABLE ELECTRONICS

机译：保守Duffing振荡器的激振振动及其在便携式电子中的冲击防护中的应用

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摘要

Shock-excited vibrations of a conservative puffing oscillator are examined in application to shock protection of a vulnerable product during accidental drop. We show that a hard characteristic of the oscillator might be advisable for a product which is able to withstand high accelerations (decelerations), while the maximum displacement has to be made small by any means. On the other hand, application of a spring with a soft characteristic can result in appreciably lower maximum accelerations (decelerations) than in a linear system and therefore can be recommended in the case when the requirement for the lowest displacement possible is not very stringent. However, if the drop height is not known with certainty (which is typically the case) the advantages of a soft spring cannot be utilized to the full extent, because of the possibility of a ''rigid impact''. In such a case a probabilistic approach can be effectively used to design a soft spring with a low enough probability of a rigid impact. The obtained results can be helpful, particularly, when designing spring protectors in portable electronics. The author believes that these results can be useful for a rather broad class of nonlinear springs, not necessarily with cubic restoring forces. Copyright (C) 1996 Published by Elsevier Science Ltd. [References: 10]
机译：为了防止意外跌落时易损产品的冲击，对传统膨化振荡器的激振进行了检查。我们表明，对于能够承受高加速度（减速度）的产品，最好通过任何方式减小最大位移，以使振荡器具有坚硬的特性。另一方面，使用具有软特性的弹簧可导致比线性系统明显降低的最大加速度（减速度），因此在对最小位移的要求不太严格的情况下建议使用。但是，如果不确定下落高度（通常是这种情况），则由于可能会产生“刚性冲击”，因此无法充分利用软弹簧的优势。在这种情况下，概率方法可以有效地用于设计软弹簧，其具有足够低的刚性冲击概率。所获得的结果可能会有所帮助，特别是在便携式电子设备中设计弹簧保护器时。作者认为，这些结果对于相当广泛的非线性弹簧很有用，而不必使用三次回复力。版权所有（C）1996，由Elsevier Science Ltd.发布[参考：10]

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