To solve the problems of high testing cost,long testing cycle,and inability to achieve continuous high amplitude impact in the existing high-speed collision dynamic mechanics simulation impact test,a signal generation system structure of high-speed continuous impact dynamic mechanics simulation test was designed.By conducting field tests and simulation analysis on high-speed continuous multiple impact signals,the characteristics of the impact signals were revealed,and technical requirements were proposed.Based on the signal characteristics,the design scheme was determined and a"rotating turntable+yielding impact head"device was used to generate continuous high amplitude and short interval impact overload signals.The feasibility of the scheme design was verified through modal analysis and numerical simulation,and the prototype testing was conducted.The results show that the design can simulate continuous impacts greater than 10 times,with an impact amplitude greater than 5 000g,an adjustable impact time interval of less than 3 ms.The design can meet the simulation detection of high-speed collision dynamics signals in the laboratory,providing a method for simulating high-speed continuous impact processes and conducting dynamic performance research on impact signals.
关键词
机械动力学与振动/高幅值/短间隔/动态力学/模拟冲击试验
Key words
mechanical dynamics and vibration/high amplitude/short interval/dynamic mechanics/simulated impact test
维普
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