Aiming at the negative effects on launch performance and position caused by buffering and ejection recoil in the process of vertical ejection,a method was proposed to calculate the buffer force-compression relation model according to the plastic strain energy-compression relation curve of the buffer,which could effectively avoid the fitting drift caused by the fluctuation of buffer force.Based on this,a linear elastic-plastic spring model for simulating buffers was constructed.Based on the ejection experi-mental data,the dynamic data of anti-recoil effect were inverted,based on which a nonlinear viscoelas-tic-plastic spring model was constructed to simulate the anti-recoil effect.By combining force ele-ments,state variables and the Newton iteration method,effective solutions were achieved for the afore-mentioned models in a dynamic model.The simulation results show that the calculation of the two models are stable and efficient as the buffering characteristics are highly consistent with the finite ele-ment simulation results,and the anti-recoil effect is in good agreement with the experimental data,which verifies the effectiveness of the data processing method and the credibility of the modeling method.It provides a stable and credible modeling idea for subsequent ejection dynamics simulation with buffering and anti-recoil effects.
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