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首页> 外文会议>Cold regions engineering 2009 : Cold regions impact on research, design, and construction >MODELING HEAVY WHEEL LOADING ON FROZEN AND UNFROZEN GROUND
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MODELING HEAVY WHEEL LOADING ON FROZEN AND UNFROZEN GROUND

机译：模拟冻结和未冻结地面上的大车轮载荷

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摘要

Two ABAQUS 3-D Finite Element Models (FEM) were constructed with hyper-elastic rubber tires loaded on unfrozen and frozen ground conditions (0, 7.62, 15.24, 22.86, and 30.48 cm frost depths), one contained a statically loaded tire, and the other contained a tire rolling at 8.05 km/h. The ground was constructed of multiple layers, allowing each of the respective frost depths to be adequately modeled. This was accomplished by changing the material properties in the layers to match the given frost condition. The material models used in the FEM simulations are representative of a frost-susceptible soil, which was used in full scale unpaved road tests at CRREL. The interest in this modeling is to see how the stress and displacement change as a function of frost depth as a heavy tire rolls over the surface. Stress and displacement data collected from the ABAQUS FEM simulations are compared to experimental data. The results show similar trends between the ABAQUS and experimental data for vertical displacement and vertical stress below the contact patch.
机译：构建了两个ABAQUS 3-D有限元模型（FEM），其中的超弹性橡胶轮胎在未冻结和冰冻的地面条件下（霜冻深度为0、7.62、15.24、22.86和30.48厘米）加载，其中一个包含静态加载的轮胎，并且另一个轮胎以8.05 km / h的速度滚动。地面由多层构成，可以对各个霜深进行适当建模。这是通过更改各层的材料属性以匹配给定的霜冻条件来实现的。有限元模拟中使用的材料模型代表着易受霜冻的土壤，该土壤被用于CRREL的全面无铺路试验中。该模型的兴趣在于观察当重型轮胎在表面上滚动时，应力和位移如何随霜深的变化而变化。从ABAQUS FEM模拟中收集的应力和位移数据与实验数据进行了比较。结果表明，ABAQUS与接触贴片下方垂直位移和垂直应力的实验数据之间存在相似的趋势。

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