Abstract Measurement of stress distribution at the contact patch is the best way to understand the wheel–soil interaction on loose soil because the wheel only interacts with the terrain at the contact patch. Grousers attached to the wheel rim upgrade the mobility performance of the wheel on loose soil; however, the stress distribution of the grouser wheel has not yet been elucidated. Understanding of the interaction between the grouser wheel and the soil contributes to the improvement in the mechanical model of the grouser wheel, and will be helpful to estimate the terrain parameters beneath the wheel. In conventional approaches, it is assumed that the traction of the grouser wheel can be expressed by merely adding bulldozing effects of the grousers into the rigid wheel model, or can be addressed as the enlargement of the wheel diameter; however, the experimental investigations are not enough. For more appropriate modeling and design of a grouser wheel, the stress distribution of a grouser wheel should be revealed. Therefore, this article addresses the experimental investigation of the stress distribution on a grouser wheel. Experimental results reveal that almost all tractive components of the grouser wheel are exerted at the grousers, unlike in the conventional model.

中文翻译：

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松散土壤上履带轮的应力分布

摘要 接触斑块处应力分布的测量是了解松散土壤上车轮-土壤相互作用的最佳方法，因为车轮仅与接触斑块处的地形相互作用。安装在轮辋上的履带齿提高了车轮在松散土壤上的机动性能；然而，履带轮的应力分布尚未阐明。了解履带轮与土壤之间的相互作用有助于改进履带轮的力学模型，有助于估计履带轮下方的地形参数。在传统方法中，假设履带轮的牵引力可以仅通过将履带板的推土效果加入刚性车轮模型中来表示，也可以表示为车轮直径的增大；然而，实验研究还不够。为了更合适地建模和设计履带轮，应显示履带轮的应力分布。因此，本文讨论了履带轮上应力分布的实验研究。实验结果表明，与传统模型不同，履带轮的几乎所有牵引部件都施加在履带上。