Étude experimentale et modélisation numérique par éléments finis de l'interaction entre les sols et les pneus/chenilles hors-routes

数值建模工具使用于建筑、农业或休闲活动的新型越野车辆的开发更容易，因为这些工具可以估计车辆的行为和它们的现场性能。然而，目前用于越野车辆开发的数值模型是基于描述土壤特征的简单参数，并且导致在土壤-车辆（轮胎或履带）界面上的模拟限制。越野车辆和土壤之间的相互作用是复杂的，这取决于车辆的机械方面（轮胎、载荷、悬挂系统等）和土壤特性（密实度、含水量等）。为了提高设备的质量、耐久性和性能，在设备开发过程中，有必要在数值模型中考虑到这些标准，从而更好地理解土-车界面所涉及的机制。CAMSO公司希望开发新的工具和专业知识，以便更好地定义其产品与土壤之间的相互作用；因此，减少用于产品开发的时间。该项目的目标是定义土壤的行为规律，特别是越野循环，并改进土壤-车辆界面的建模。这些行为规律将通过实验室试验、现场测试和数值工具来发展。

Numerical modelling tools make the development of new off-road vehicle used in construction, agriculture or leisure activities easier as these tools estimate vehicle behaviours and their field performance. Nevertheless, current numerical models used for off-road vehicle development are based on simple parameters describing soil characteristics and, result in the limits of simulation at the soil-vehicle (tire or caterpillar) interface.Interaction between off-road vehicles and soils are complex, depending on the vehicles mechanical aspects (tires, loads, suspension systems, etc.) and soils properties (compactness, water content, etc.). To help the improvement of the equipment quality, durability, and performance, a better understanding of the mechanisms involved at the soil-vehicle interface is necessary to take into account these criteria in the numerical models during equipment development. CAMSO company wishes to develop new tools and expertise for a better definition of the interaction between its product and soil; thus, reduce the time dedicated to product development.The goal of this project is to define behavioral laws for soils, specifically for off-road circulation, and improve modelling of the soil-vehicle interface. These behavioral laws will be developed using laboratory trials, field tests, and numerical tools.