ガタ振動をともなう包装品の振動耐久性に関する検討

概要

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In the previous papers, the analysis and the experiment were conducted on the vibration of the package with gaps. As a result, it has been clarified that the vibration of the contents is very different from the one applied to the package, because the vibration transmissibility is nonlinear due to gaps. However, it has not yet been investigated how this nonlinear gap induced vibration has effect on the durability of the contents. In this paper, the accumulated fatigue based on the Palmgren-Miner's rule is used in order to evaluate the vibration durability of the contents. The accumulated fatigue applied to the contents in the transportation environment and in the test one are calculated. As a result, it has been confirmed that gaps have effect on the results of evaluation, because these accumulated fatigue are different due to gaps. It has been clarified that the acceleration ratio of the test (the ratio of the transportation time to the test time) also has effect on the accumulated fatigue applied to the contents.
2007-09-25