Abstract：In order to investigate the slipper-rail contact characteristics of rocket sled, the Eluer-Bernouli beam elements were used to discretize the rocket sled, and the slipper-rail nonlinear contact force model considering irregularity of the rail was established, the sled-rail dynamics equations including the slipper-rail nonlinear contact force was solved by combining newmark-β with Newton-Raphson local iteration method, and the correctness of the numerical solution was verified through experiments. The numerical results show that at 700 m/s, the peak of the slipper-rail contact force is 2.27×106N, and the single slipper-rail collision time is between 0.35ms-0.45ms; slipper-rail collision time is proportional to the forward speed of rocket sled, and it accounts for 26.0% of the total time at 700m/s; slipper-rail contact speed is proportional to square of the forward speed, the upper limit of the rocket sled forward speed is 820m/s when 2.54m/s is the maximum contact speed that the rail can bear.
赵项伟，杨珍，杨洋. 火箭橇靴轨接触特性数值分析[J]. 振动与冲击, 2022, 41(1): 238-243.
ZHAO Xiangwei, YANG Zhen, YANG Yang. Numerical analysis for slipper-rail contact characteristics of rocket sled. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(1): 238-243.
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