Influence of foundation stiffness on the characteristics of secondary impact to the equipment induced by the limiter of vibration isolator
LI Jianzhao1，SHEN Haichuan1，SONG Yulin1，LIU Wei1，LIU Bingxiang2
1.NO.703 Research Institute, China Shipbuilding Industry Group Co., Ltd., Harbin 150000, China;
2.College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150000, China
The use of vibration isolator is an important means for improving the anti-shock performance of marine experiments, and its second impact problem under certain condition is one of the main concerns in impact analysis.Therefore, it is necessary to choose reasonably restrictor parameters, such as the stiffness of restrictor and the restricted displacement, to fulfill the allowable impact response condition.At the same time, the consideration of the rigidity of installation foundation has a great influence on the anti-shock performance of marine experiments.In the paper, an undamped system with one degree of freedom and an undamped system with two degrees of freedom were taken as the analysis objects.Based on the piecewise function method, the influences of foundation stiffness on impact responses and different restrictor parameters were discussed.The results provide a more accurate basis for choosing vibration isolators.
李剑钊1，申海川1，宋禹林1，刘伟1，刘丙祥2. 基座刚度对设备隔振器限位引起的二次冲击影响特性研究[J]. 振动与冲击, 2020, 39(6): 125-131.
LI Jianzhao1，SHEN Haichuan1，SONG Yulin1，LIU Wei1，LIU Bingxiang2. Influence of foundation stiffness on the characteristics of secondary impact to the equipment induced by the limiter of vibration isolator. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(6): 125-131.
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