Simulation of the Cutting Process in Softening and Hardening Soils
Simulation of the Cutting Process in Softening and Hardening Soils
复制标题
软化和硬化土壤中切削过程的模拟
DOI：
10.1061/9780784482124.002
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Hambleton, James P.
中科院分区：
文献类型：
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作者：
Jin, Zhefei;Hambleton, James P.
由于土壤的大变形和接触相互作用，模拟土壤中的耕作和切割过程具有挑战性和耗时。最近对砂土的研究表明，基于增量塑性分析的简化、有效的方法可以捕捉问题的基本物理和特征。本研究通过增强运动学和实施更复杂的材料法来改进这种技术。介绍了硬化和软化的作用，以及水化和压实的作用。与修改后的模型，它是观察到的硬化（压实）的情况下，在可变位置的多个连续的剪切带的发生给出了连续剪切变形的最终图案的外观。这是显着不同的软化情况下，剪切带出现在不同的位置，并从一个离散的位置过渡到下一个先前预测的响应。计算结果与西北大学土-结构和土-机器相互作用实验室（SSI-SMI实验室）收集的初步实验数据进行了比较。
Simulation of plowing and cutting processes in soils is challenging and time-consuming due to large deformations and contact interactions. Recent studies on sand have suggested that a simplified, efficient approach based on incremental plastic analysis can capture the essential physics and features of the problem. The present study refines this technique by enhancing the kinematics and implementing a more sophisticated material law. The effects of hardening and softening, as well as dilatancy and compaction, are introduced. With the modified model, it is observed in the case of hardening (compaction) that the occurrence of multiple successive shear bands at variable locations gives the appearance of continuous shearing in the final pattern of deformation. This is markedly different from the previously predicted response in the case of softening (dilatancy), where shear bands appear at distinct locations and transition from one discrete location to the next. The computed results are compared with preliminary experimental data gathered in the Soil-Structure and Soil-Machine Interaction Laboratory (SSI-SMI Laboratory) at Northwestern University.
探讨简单跳跃机器人在硬质和软质地面上的动力学
DOI：
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发表时间：
2016
期刊：
影响因子：
--
作者：
J. Aguilar
通讯作者：
J. Aguilar
从岩土工程的角度看土方工程
DOI：
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发表时间：
2017
期刊：
影响因子：
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作者：
J. Hambleton
通讯作者：
J. Hambleton