Recoil buffering technology of electromagnetic launch with large load bidirectional alternating force
To realize the buffering of electromagnetic launch bidirectional recoil force,a combined buffer device composed of oil-gas spring and bidirectional variable dampers was proposed.The inte-grated dynamics model of the device was built.Combined with the characteristics of electromagnetic launch recoil,the effects of system equivalent stiffness and bidirectional damping ratios on the buffer performance was analyzed,and the optimal design method of the device was developed.The results show that the buffer performance of the device is closely related to the bidirectional damping ratios and equivalent stiffness of the system,i.e.,when the bidirectional damping ratios are equal,the maxi-mum displacement and viscous damping force of the motor stator all appear in the upward direction,that the multi-objective optimization of the buffer performance cannot be achieved only by changing the damping ratios and equivalent stiffness of the device,and that by reducing the upward damping ra-tio and increasing the energy absorption density of the damper,the performance indicators and dyna mic response of the device have been greatly improved and thus meeting the buffering requirements of transient alternating impact force of the electromagnetic launch.The research results provide some guidance for the research of electromagnetic launch anti-recoil technology.
万方数据
维普
