Finite Element Method in Modeling the Tractive Performances of Flotation Tires Running on Wetland Paddy Fields in Malaysia
Publication Date : 07/02/2018
Efficient tire mobility and low terrain compaction are the two pertinent requirements in any study of off-road wheel traction on low bearing capacity terrain. Soft terrain can drastically reduce the traction performance of tires up to the point of making the motion impossible. However, the use of finite element method (FEM) has shown to be an appropriate approach in tire-soil interaction modelling. In this work, the essential figuration on modeling soil compaction and tire mobility issues are further informed. An improved 3D model with the geometry of tire 29-12.50x15 4PR flotation was founded. The hyper-elastic rubber as tire main material was analyzed by Mooney-Rivlin model, for modelling the soil compaction, the Drucker-Prager yield criterion proceeded in ABAQUS was used. Delegate simulations are provided to elucidate how the tire-terrain interaction model can be used to predict soil compaction and tire mobility in the paddy field. The results show that the model realistically predicts the longitudinal and lateral forces providing at the same time good appreciations of the slip-sinkage behavior and tire parameters sensitivity: this aspect is essential in order to realistically estimate the traction efficiency.
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