共查询到15条相似文献,搜索用时 46 毫秒
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油气弹簧刚度和阻尼特性及其影响因素仿真分析 总被引:1,自引:0,他引:1
介绍油气弹簧的结构和工作原理,研究其静刚度和阻尼特性,并建立数学模型进行仿真.分析初始气柱高度对静刚度影响,环形腔、阻尼孔和单向阀面积对阻尼特性影响.结果表明,初始气柱高度越短,随着活塞杆压缩量增加静刚度越大;阻尼力与环形腔面积三次方成正比,与等效阻尼面积平方成反比. 相似文献
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为改善重型商用车辆剪式座椅的减振性能以提高驾驶员的乘坐舒适性,设计由惯容器(Inerter)、弹簧和阻尼器组成的剪式座椅ISD(Inerter—Spring—Damper)悬架,分析液压缸马达液力式惯容器的结构组成、工作原理和减振特性.针对某三轴式重型运输车建立了含ISD剪式座椅的9自由度半车模型,基于MATLAB分别在时域和频域内对ISD剪式座椅和传统剪式座椅的振动响应进行了仿真分析.结果表明:ISD剪式座椅的时域振动响应明显小于传统剪式座椅,减小的幅度随车速提高而下降,体现了惯容器“通高频,阻低频”的减振特性;在人体敏感的频率范围,ISD座椅的频域振动响应明显小于传统剪式座椅,说明ISD座椅可以提高驾驶员的乘坐舒适性. 相似文献
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冷弹射系统动力学响应与油气悬架优化设计 总被引:1,自引:0,他引:1
为了提高全轮支撑冷发射时导弹的出筒精度,基于4轴连通式油气悬架导弹发射车,推导出4轴连通油气悬架数学模型并验证了AMESim仿真模型的正确性;建立了基于ADAMS/Simulink/AMESim的联合仿真模型,以发射筒筒口纵向位移均方根值为优化目标,以油气悬架系统的蓄能器容积、初始充气压力和阻尼孔直径为设计变量,选择车体倾斜0°,起竖角为90°这一工况,应用遗传算法进行优化设计。结果表明:优化后筒口纵向位移均方根值降低了61.1%,提高了导弹出筒精度;发射车的俯仰姿态角位移和各轴载荷分配得到较好的改善,发射系统的稳定性得到提高。基于遗传算法的联合仿真方法可同时提高导弹的出筒精度和发射系统的稳定性,并为解决工程实际问题提供参考。 相似文献
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A new outboard inductive damping valve without any electronic control system is developed. Its working principle,structure and external characteristic are studied. Its mathematical model is presented and its damping characteristic is investigated on the basis of fluid continuity equation,differential equations of motion and Bernoulli equation. The influence of the valve parameters on the damping characteristic is studied numerically. The effects of outboard inductive damping valve and common damping valve on ride and tire load are compared also. The external characteristic of the valve is verified in bench test. The results show that the valve’s mathematical model is quite accurate and the developed valve can be adjust in two stages,which can also meet the requirements of the dynamic characteristic of the vehicle suspension system. 相似文献
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