Characterization of Mechanical Properties of a Synthetic Modeling Clay Used as a Substitute for Natural Soils
Characterization of Mechanical Properties of a Synthetic Modeling Clay Used as a Substitute for Natural Soils
复制标题
用作天然土壤替代品的合成造型粘土的力学性能表征
DOI：
10.1061/9780784484036.008
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Van de Ven, James D.
中科院分区：
文献类型：
--
作者：
Lee, Hyunjin;Ponkshe, Nitish;Hambleton, James P.;Van de Ven, James D.
本文探讨了克雷奥拉造型粘土作为天然土的替代品。这种产品相对便宜，不干燥，可重复使用，柔韧，可以在商业上买到。进行了无侧限压缩试验，以确定其力学性能。此外，还对弹塑性响应进行了反分析。反分析中使用的模型考虑了有限变形塑性。通过定义局部耗散函数，利用最大耗散原理，得到了应力应变关系。该公式基于超弹性，用Kirchhoff应力、对数应变和变形梯度的乘法分解来表示，以克服基于无限小变形的理论的局限性。硬化行为是根据路德维克方程规定的。利用遗传算法进行了反分析，以减小无侧限压缩试验的试验数据和预测结果之间的差异。
This paper discusses the use of Crayola modeling clay as a substitute for natural soil. This product is relatively inexpensive, non-drying, reusable, pliable, and commercially available. The unconfined compression test was performed to determine mechanical properties. Additionally, inverse analysis was implemented to characterize the elastoplastic response. The model used in the inverse analysis considers finite deformation plasticity. The stress–strain relationship was obtained by defining a local dissipation function and using the principle of maximum dissipation. The formulation is based on hyperelasticity and expressed in terms of Kirchhoff stress, logarithmic strain, and the multiplicative decomposition of deformation gradient to overcome the limitations of the theory based on infinitesimal deformation. The hardening behavior is prescribed based on Ludwik’s equation. Inverse analysis is performed using a genetic algorithm to minimize the difference between the experimental data and predicted results for the unconfined compression tests.
影响因子：
3.7
作者：
Mishra AK;Tramacere F;Guarino R;Pugno NM;Mazzolai B
通讯作者：
Mazzolai B