摘要
按液压机突然失荷的动力过程 ,建立了考虑液压缸动力液体弹性作用的振动控制数学模型 ,并应用系统仿真技术对隔振安装条件下考虑液压缸液体弹性作用、不考虑液压缸液体弹性作用和未作隔振安装 3种情况的振动过程进行了数值仿真及分析。研究结果表明 ,动梁—机架—基础三自由度有阻尼的数学模型比不考虑液体弹性作用因素的机架—基础隔振模型精确可靠 ,符合液压机实际工作过程 。
Mathematic model of vibration control of considering liquid elasticity inside hydraulic press is set up while the dynamic process of losing load is produced.Numerical simulation of the system vibration and a comparative research between with considering without considering liquid elasticity and without vibration isolation are completed by system simulation technigue proposed in this paper.The results show that model of three desrees of freedom damping vibration occured in beam-frame-foundation system is more precision than that of frame-foundation system of taking no account the liquid elasticity,and is in accord with working process of the hydraulic press and the calculated values of the former are close to measuring values.
出处
《中国机械工程》
CAS
CSCD
北大核心
2000年第9期1029-1032,共4页
China Mechanical Engineering
基金
江西省自然科学基金资助项目! ( 9912 0 10 )
关键词
冲击振动
建模
液压机
系统仿真
振动控制
impact vibration modeling hydraulic press system simulation vibration control
