摘要
为提高舰载设备的抗冲击性能,改善传统限位器产生的二次冲击问题,提出采用液压限位器代替传统橡胶限位器方法。首先建立基于AMESim的液压限位隔离系统计算模型,分析了阻尼孔孔径对隔离系统冲击响应的影响,然后对比分析了液压限位和橡胶隔离系统的冲击响应特性,最后通过冲击试验加以验证。研究结果表明:对于任一额定负载下的液压缓冲器,都存在一个最优阻尼孔孔径,使隔离系统获得最佳隔冲效果;与橡胶限位隔离系统相比,在相对位移响应一致的条件下,不仅加速度响应峰值降低了65%以上,而且保证了加速度隔冲率在45%以上,有效改善了二次冲击带来的危害,大幅提高了舰载设备的抗冲击性能。
In order to improve the shock resistance of shipboard equipment and improve the secondary impact caused by traditional limiters,a hydraulic limiter was proposed instead of the traditional rubber limiter. Firstly,the calculation model of hydraulic limit isolation system based on AMESim was established,and the influence of the orifice diameter on the shock response of the isolation system was analyzed. Then the shock response of hydraulic limit and rubber limit isolation system are compared and analyzed. Finally,the results were verified by impact test. The research results prove that there is an optimum orifice diameter,which can make the system obtain the optimum isolation effect under any rated load. Compared with the rubber limit isolation system,the acceleration response peak is reduced by more than 65%,the acceleration isolation rate is guaranteed to be above 45% under the condition of equal relative displacement. It effectively improves the harm caused by the secondary impact and greatly improves the shock resistance of the shipborne equipment.
作者
刘海超
闫明
张春辉
刘慧芳
LIU Hai-chao;YAN Ming;ZHANG Chun-hui;LIU Hui-fang(School of Mechanical Engineering,Shenyang University of Technology,Liaoning Shenyang 110870,China;Naval Academy of Armament,Beijing 100161,China)
出处
《机械设计与制造》
北大核心
2021年第12期38-42,共5页
Machinery Design & Manufacture
基金
国家自然科学基金项目(51775354)
沈阳市高层次创新人才项目(RC180061)。
