设计参数对一体化准零刚度隔振器冲击隔离性能的影响
2024,46(4):159-168
丁伯森
北京科技大学 机械工程学院, 北京 100083，dingbosen999@163.com
刘海平
北京科技大学 机械工程学院, 北京 100083;
北京科技大学 顺德创新学院, 广东 佛山 528300
朱冬梅
北京科技大学 机械工程学院, 北京 100083;
北京科技大学 顺德创新学院, 广东 佛山 528300
北京科技大学 机械工程学院, 北京 100083，dingbosen999@163.com
刘海平
北京科技大学 机械工程学院, 北京 100083;
北京科技大学 顺德创新学院, 广东 佛山 528300
朱冬梅
北京科技大学 机械工程学院, 北京 100083;
北京科技大学 顺德创新学院, 广东 佛山 528300
摘要：
针对一体化准零刚度隔振器(简称“一体化隔振器”)的冲击隔离性能展开研究。分别选择冲击响应的衰减周期、振荡频率、最大加速度比以及最大位移作为评价指标,采用四阶龙格-库塔法重点研究半正弦脉冲加速度激励下线性刚度比和几何设计参数对一体化隔振器抗冲击性能的影响。计算结果表明,在持续时间较长的冲击结束后,一体化隔振器表现出比线性隔振器更好的加速度衰减性能；且较小的外壁高度和较大的壁厚有利于改善其冲击隔离性能。相关研究可为一体化准零刚度隔振器的工程应用提供指导。
针对一体化准零刚度隔振器(简称“一体化隔振器”)的冲击隔离性能展开研究。分别选择冲击响应的衰减周期、振荡频率、最大加速度比以及最大位移作为评价指标,采用四阶龙格-库塔法重点研究半正弦脉冲加速度激励下线性刚度比和几何设计参数对一体化隔振器抗冲击性能的影响。计算结果表明,在持续时间较长的冲击结束后,一体化隔振器表现出比线性隔振器更好的加速度衰减性能；且较小的外壁高度和较大的壁厚有利于改善其冲击隔离性能。相关研究可为一体化准零刚度隔振器的工程应用提供指导。
基金项目：
广东省基础与应用基础研究基金资助项目(2021B1515120049)；北京市自然科学基金-怀柔区创新联合基金重点专项资助项目(L245008)
广东省基础与应用基础研究基金资助项目(2021B1515120049)；北京市自然科学基金-怀柔区创新联合基金重点专项资助项目(L245008)
Influences of design parameters on shock isolation performance of integrated quasi-zero stiffness isolator
DING Bosen
School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China,dingbosen999@163.com
LIU Haiping
School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China;
Shunde Innovation School, University of Science and Technology Beijing, Foshan 528300, China
ZHU Dongmei
School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China;
Shunde Innovation School, University of Science and Technology Beijing, Foshan 528300, China
School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China,dingbosen999@163.com
LIU Haiping
School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China;
Shunde Innovation School, University of Science and Technology Beijing, Foshan 528300, China
ZHU Dongmei
School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China;
Shunde Innovation School, University of Science and Technology Beijing, Foshan 528300, China
Abstract：
The shock isolation performance of the integrated quasi-zero stiffness isolator (as also be called “integrated isolator”) was studied. The attenuation period, oscillation frequency, maximum acceleration ratio and maximum displacement of shock response were selected as evaluation indexes, respectively. The influences of linear stiffness ratio and geometric design parameters on the shock isolation of the integrated isolator under half-sine pulse acceleration excitation were emphatically studied by using the fourth-order Runge-Kutta method. Calculation results show that the integrated isolator has better acceleration attenuation performance than the linear isolator after the shock with a long duration. The smaller outer wall height and the larger wall thickness are beneficial to improve the shock isolation performance. The relevant research can provide guidance for the engineering application of the integrated quasi-zero stiffness isolator.
The shock isolation performance of the integrated quasi-zero stiffness isolator (as also be called “integrated isolator”) was studied. The attenuation period, oscillation frequency, maximum acceleration ratio and maximum displacement of shock response were selected as evaluation indexes, respectively. The influences of linear stiffness ratio and geometric design parameters on the shock isolation of the integrated isolator under half-sine pulse acceleration excitation were emphatically studied by using the fourth-order Runge-Kutta method. Calculation results show that the integrated isolator has better acceleration attenuation performance than the linear isolator after the shock with a long duration. The smaller outer wall height and the larger wall thickness are beneficial to improve the shock isolation performance. The relevant research can provide guidance for the engineering application of the integrated quasi-zero stiffness isolator.
收稿日期：
2022-04-21
2022-04-21
