The foundation of calculating the vibration characteristics of tracked vehicle travel on the soft road lies in the soil pressure bearing characteristics. However the current soil pressure bearing model represented by Bekker’s formula lacks the consideration of shear stress, unload and reload and load speed factors. The improved soil bearing model was put based on the Bekker’s formula used physical test and simulation test. The dynamic model of a tracked vehicle was established and simulated the vibration characteristics used the improved soil bearing model. The results show that compared with the Bekker’s formula, the hull peak acceleration and average acceleration calculated by the improved soil bearing model was smaller and the sinkage of track plate was bigger. The research conclusions can provide reference for predicting the sinkage, driving resistance, vibration characteristics and traction characteristics of tracked vehicles travel on the soft road.
Key words
soil /
pressure bearing /
tracked vehicle /
vibration characteristics /
simulation
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Footnotes
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