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利用MSC/NASTRAN软件中的CAP单元特性函数,根据压实轮和土壤的接触状态,建立了接触单元,解决了冲击式压实机压实轮和土的接触问题。通过试验得出了土的属性及应力应变变化规律曲线,利用该曲线定义了土的弹塑性单元,建立了压实轮压实效果有限元模型,模拟计算了两种不同外形压实轮的压实效果,对影响压实效果的因素进行了分析,为冲击式压实机压实轮设计提供了参考依据。
According to the characteristic of CAP unit in MSC / NASTRAN software, the contact unit was established according to the contact state between the compaction wheel and the soil, which solved the contact problem between the compaction wheel and the soil of the impact compaction machine. Through the test, the curves of soil properties and stress-strain curves are obtained. By using this curve, the elastic-plastic elements of soil are defined and the compaction effect of compaction wheel is established. The compression of two different forms of compaction wheel is simulated The actual effect of the impact of the compaction effect of the factors were analyzed for the impact compactor compaction wheel design provides a reference.