车辆行驶工况下的沙漠沙本构特性模型的建立

Models for Describing the Constitutive Relationship of Takelamagan Desert Sand under Moving Vehicle

提出了确定车辆行驶工况下地面线性弹性本构特性的试验 数值混合法,并用于确定塔克拉玛干沙漠沙的线性弹性本构特性参数。采用土壤动态三轴仪对塔克拉玛干沙漠沙的本构特性进行了研究,建立了沙的非线性弹性本构特性模型和弹塑性本构特性模型。所得结果可为研制沙地通过性良好的运输车辆———沙漠车辆、开发沙漠资源及穿越沙漠的军用车辆提供参考。

Testingnumerical hybrid method for determining linear constitutive relationship of terrain is presented,and applied to obtain linear constitutive parameters of Takelamagan desert sand under moving vehicle.Nonlinear elastic constitutive model and elasticplastic constitutive model of the desert sand under moving vehicle are set up by tests using soil dynamic triaxial test apparatus.These results lay the foundations for developing sand vehicle,exploiting desert resources and crossing through desert area in military operations.