渐变节流液压缓冲器特性分析与结构优化

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英文篇名：Performance Analysis and Structural Optimization of Gradual Throttling Hydraulic Buffer 作者：马星国 ; 吴琼 ; 尤小梅 ; 魏来生 ; 陈轶杰 英文作者：MA Xingguo;WU Qiong;YOU Xiaomei;WEI Laisheng;CHEN Yijie;School of Mechanical Engineering,Shenyang Ligong University;Beijing North Vehicle Group Corporation; 关键词：液压缓冲器 ; MATLAB ; 遗传算法 ; 特性曲线 ; 结构优化 英文关键词：Hydraulic buffer;;MATLAB;;Genetic algorithm;;Characteristics curve;;Structural optimizationn 中文刊名：JCYY 英文刊名：Machine Tool & Hydraulics 机构：沈阳理工大学机械工程学院;北京北方车辆集团有限公司; 出版日期：2015-10-15 出版单位：机床与液压 年：2015 期：v.43;No.397 语种：中文; 页：JCYY201519025 页数：5 CN：19 ISSN：44-1259/TH 分类号：108-112

摘要

为研究渐变节流液压缓冲器工作特性的影响因素,分析了其结构以及工作原理,基于流体力学以及运动学建立数学模型,利用MATLAB进行求解,得到了缓冲特性曲线;为达到更加理想的缓冲效果,利用遗传算法对缓冲器进行优化,以阻尼孔的半径与长度以及针形节流杆的最小半径作为优化变量,将理想缓冲效率与实际缓冲效率的差值设为目标函数。结果表明:优化后的缓冲器缓冲效率增加,最大缓冲力降低。
        In order to study the influence factors of working characteristics of gradual throttling hydraulic buffer,its structure and working principle were analyzed. A mathematical model was established based on fluid mechanics and kinematics,and characteristics curve of the buffer was obtained after solved by MATLAB. In order to achieve the better cushioning effect,the buffer was optimized by genetic algorithm. The radius and length of damping hole as well as the minimum radius of needle throttle bar were set as optimization variables,and the difference value between the ideal buffer efficiency and the actual buffer efficiency was set as objective function. The results show that the buffer efficiency is increased and the maximum buffer force is reduced after optimization.

引文

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