摘要
针对某厂房内安装的柔性组合式起重机在吊装工件时发生振动幅值大、衰减缓慢情况进行吊装过程现场振动测试。据起重机设计要求分析测试数据,由提高结构动刚度角度提出系统加固方案减小吊装过程的振动;对吊装系统进行有限元建模,并对该系统在工件吊装时停顿引起的惯性冲击载荷作用动响应进行分析。由仿真分析验证所提减振方案减振效果,为此类起重机安装提供依据,并为使用时的振动问题提供参考。
For controlling the vibration of flexible modular crane in a workshop with large amplitudes and slow degradation during lifting workpiece,field vibration tests were carried out on the whole lifting system.Via the tests,the reinforcement schemes were proposed to reduce the vibration amplitude of the system by improving the dynamic stiffness. Finite element models were developed to simulate the whole lifting system and to investigate the dynamic response of the system under an inertial impact load caused by a sudden pause happening during lifting workpiece.The effect on vibration reduction of the system was verified through simulation analysis.The results can provide references to installation and solving vibration problems of such cranes.
出处
《振动与冲击》
EI
CSCD
北大核心
2014年第6期184-188,共5页
Journal of Vibration and Shock
关键词
柔性组合式起重机
动刚度
振动测试
有限元
减振
flexible modular crane
dynamic stiffness
vibration test
finite element
vibration control
