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Stability analysis of heavy machinery moving on weak subsoil. Analytical solution
Engineering Structures ( IF 5.5 ) Pub Date : 2021-05-05 , DOI: 10.1016/j.engstruct.2021.112152
Aleksander Urbański , Mateusz Richter

Theoretical formulation and analytical solution of the stability problem of heavy machinery, moving on caterpillar tracks on weak subsoil, is presented in the article. The machine base is treated as a perfectly rigid body. The machine-subsoil interaction problem, considering no-tension contact and elastic-plastic but simplified model of subsoil, is solved in a purely analytical way. The bearing capacity of layered subsoil is the most important entry data, used by the model. Different possibilities of its estimation are examined. Results of the analytic model are compared to those obtained from analogous 3D finite element (time-consuming) simulation done in the previous work of the Authors, showing qualitative and quantitative agreement. The interaction curves for the moments in two directions and weight of the machine are developed. Based on this algorithm of design a working platform for the given machine or assessing limit conditions for exploitation is proposed.



中文翻译:

重型机械在弱土上移动的稳定性分析。分析溶液

介绍了重型机械在薄弱土层上履带上运动的稳定性问题的理论公式和解析解。机器基座被视为完美的刚体。考虑到无拉力接触和弹塑性但简化的地基模型,机器与地基的相互作用问题以一种纯粹的解析方法得以解决。模型使用的是最重要的输入数据,即层状地下土壤的承载力。研究了其估计的不同可能性。将分析模型的结果与作者先前工作中从类似的3D有限元(费时)仿真中获得的结果进行比较,显示出定性和定量的一致性。绘制了两个方向上的力矩和机器的重量的相互作用曲线。

更新日期:2021-05-05
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