基于多體接觸碰撞的松軟地面車輪沉陷仿真

doi:10.3969/j.issn.1000-1298.[year].[issue].[sequence]

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基于多體接觸碰撞的松軟地面車輪沉陷仿真
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                        10.3969/j.issn.1000-1298.[year].10.[sequence]
                    
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of Wheel Sinkage on Soft Terrain Based on Multibody Contact Problem

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提出了一種大規(guī)模多體系統(tǒng)接觸碰撞理論與車輛地面力學(xué)理論相結(jié)合的仿真方法，并基于多體動(dòng)力學(xué)仿真平臺(tái)開發(fā)了車輪土壤相互作用仿真模塊,?；谠摲椒ń⒌耐寥绖?dòng)力學(xué)模型和車輪土壤接觸碰撞模型，進(jìn)行了車輪沉陷的仿真,。根據(jù)記錄,，在普通配置臺(tái)式計(jì)算機(jī)上模擬土槽系統(tǒng)30 s的運(yùn)動(dòng)，僅需20 min,。在相同實(shí)驗(yàn)條件下,，仿真結(jié)果與土槽實(shí)驗(yàn)結(jié)果趨勢一致，仿真曲線與土槽實(shí)驗(yàn)曲線吻合良好,。由此表明該仿真算法能夠滿足越野行駛仿真的需要,。

Abstract:

A new approach to realize the wheel-soil interaction simulation was proposed which applied the large-scale multibody contact problem and vehicle terramechanics theory. Using this method, we developed a wheel-soil simulation module in self-developed multibody dynamics simulation platform. Based on modeling of soil and wheel-soil contact, the computational implementation for wheel sinkage was depicted in detail. According to records, it needs only 20 min to simulate the motion of wheel-soil testbed system about 30?s on a microcomputer with general configuration. Under similar conditions simulation and experimental results have good consistency. This indicates that the simulation algorithm could meet the requirement of off-road driving simulation.

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左艷蕊,宗志堅(jiān),劉忠途,程源,樊世超.基于多體接觸碰撞的松軟地面車輪沉陷仿真[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2009,40(10):33-38. of Wheel Sinkage on Soft Terrain Based on Multibody Contact Problem[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(10):33-38.

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