Vibration and Shock Isolation Synthesis Design Method for Hybrid Base
ZHANG Xiang-wen1，YANG De-qing1，WU Guang-ming2
1. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration，Shanghai Jiaotong University，Shanghai 200240;
2. Shanghai Part of No.701 Research Institute，CSIC，Shanghai 201102
Abstract：To meet the new requirements of the vibration reduction and shock resistance, a novel hybrid base consisting of face plates, brackets and auxetic honeycomb sandwich web plates is proposed by structural dynamics optimization method. Taking a naval ship transformer base as an example, vibration reduction and shock resistance mechanisms of the hybrid base are conducted by numerical simulation methods. The results reveal that the impedance mismatch effect and energy-absorbing characteristics of cellular materials play an important role in the new hybrid base. Dynamics optimization models of the hybrid base designed with thickness of face plates, brackets and honeycomb cells as variables are investigated in two cases, one with vibration reduction performance constraints and the other with both vibration reduction and shock resistance performance constraints. Optimization results indicate that by applying auxetic honeycomb hybrid structure and synthetic dynamics optimization design, excellent performance in vibration reduction and shock isolation can be obtained in the base design.
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