摘要
某些抗冲击性能薄弱的舰船设备具有以下特点:空间占比小、冲击载荷多变且较大、负载动态变化,并需要满足刚柔状态转换及被动式工作的隔振需求,而传统的隔振装置已无法满足这些需求。基于此,本文首先提出一种新型集成式双向隔振装置,并进行相应的结构设计;其次,建立隔振装置的动力学模型,预测其在复杂载荷作用下的动力学响应,并进一步探索频率和阻尼比对隔振装置抗冲击性能的影响;最后,搭建隔振装置试验台架,验证结构设计与理论分析的合理性。结果表明:冲击载荷与动态摇摆载荷的作用方向会影响隔振装置的抗冲击性能;同向作用会提升性能,反向作用会降低性能;随着频率或阻尼比的增大,隔振装置的抗冲击性能逐渐下降,因此需结合关键指标对其进行优化。隔振装置的试验测试结果曲线平滑无畸变,理论计算结果与其总体趋势基本相同,验证了结构设计与理论分析的合理性。本研究结果可为舰船抗冲击性能薄弱设备的隔振抗冲击设计提供有益指导。
Some ship equipment with weak anti-shock properties has the flowing characteristics such as small space proportion,variable and large shock loads,dynamic load changes,rigid-flexible state transitions and passive operation.Howerver,these needs cannot be met by traditional vibration isolation devices.Therefore,this paper proposed a novel integrated bi-directional vibration isolation device and conducted the corresponding structural design.Then,the dynamic model of the vibration isolation device was established to predict the dynamic response under complex loading and to explore the effects of frequency and damping ratio on the anti-shock properties of the device.Finally,the test bench for the vibration isolation device was built to verify the validity of the structural design and theoretical analysis.The results show that the direction of the impact load and dynamic sway load affects the anti-shock properties of the vibration isolation device,When the loads act in the same direction,the anti-shock performance will be improved,whereas when the performance will be decreased if the loads act in opposite directions.As the frequency or damping ratio increases,the anti-shock properties of the vibration isolation device gradually decrease,thus requires optimization based on key performance indicators.The test results of the vibration isolation device have smooth curves without distortion,and the overall trend is basically the same as that of the theoretical calculation results,which can verify the validity of the structural design and theoretical analysis.The results of the study can provide useful guidance for the design of vibration isolation and anti-shock for weak ship equipment.
作者
马超超
许金
李想
贾正荣
芮万智
MA Chao-chao;XU Jin;LI Xiang;JIA Zheng-rong;RUI Wan-zhi(National Key Laboratory of Electromagnetic Energy,Naval University of Engineering,Wuhan 430033,China)
出处
《船舶力学》
北大核心
2025年第10期1638-1648,共11页
Journal of Ship Mechanics
基金
国家自然科学基金资助项目(51977218)。
关键词
集成式
双向隔振装置
动力学模型
复杂载荷
抗冲击
integrated
bi-directional vibration isolation device
dynamic changes
complex loading
anti-shock
