Drop shock analysis of products with cantilever beam type vulnerable parts and elastic constraints
HUO Yinlei1, JI Xilong 2
1.Department of Packaging Engineering, Henan University of Science and Technology, Luoyang 471000, China;
2.School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471000, China
Abstract：Based on Euler beam theory and Hamilton’s principle, the nonlinear coupling differential equation of the packaging system with a cantilever beam type vulnerable part is derived, in order to improve the reliability of product drop impact, elastic constraints are applied between the elastic component and the rigid product. The resulting equation is discretized via the Galerkin method and the dynamic response of the packaging system are discussed with regard to different support types and support stiffness. The numerical results show that the response frequency of the elastic component decreases with the increase of end mass and increases with the increase of tip support stiffness; The elastic support has an obvious inhibitory effect on the impact response of the cantilever type component; The comparison shows that the tip support has the best suppression effect to the impact response and especially when the support stiffness in the range of 0~30.
霍银磊1，姬喜龙2. 含悬臂梁式易损件及弹性约束的产品跌落冲击分析[J]. 振动与冲击, 2021, 40(21): 283-289.
HUO Yinlei1, JI Xilong 2. Drop shock analysis of products with cantilever beam type vulnerable parts and elastic constraints. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(21): 283-289.
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