一种新型剪应力模型——双曲力学模型

doi:10.13722/j.cnki.jrme.2021.0460

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Abstract In order to describe the mechanical behavior of geo-materials accurately and conveniently，the resistance of geotechnical materials is divided into generalized bonding force and friction force based on the failure mechanism of rock and soil shear plane. The method of combining theoretical analysis with experiment is adopted in this paper. A hyperbolic function is proposed to describe the alternative actions of the cohesive force and friction based on their out-of-sync feature. A new type of hyperbolic mechanics model is established based on the Mohr-coulomb strength theory. Physical meaning of the model parameters are discussed as well as their determination method. The critical deformation value of geotechnical material can be estimated by the proposed model. The proposed model has clear meaning and simple structure，and can describe most of the mechanical behavior characteristics of geomaterials，such as elasto-brittle，ideal elasto-plastic，elasto-plastic hardening and elasto-plastic softening material behavior characteristics，especially for the strain softening characteristics of materials after failure. Finally，the stress-deformation data obtained from shear tests on red clay and the contact surface between red clay and steel plate were used to verify the model，and the consistent results were obtained.

Key words： soil mechanics cohesion friction alternation hyperbolic function

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	Articles by authors
	GAN Fei1
	2
	YE Xiaoming3
	ZHENG Gang2
	LEI Huayang2
	LI Meilin1
	XIAO Yang3

Cite this article:

GAN Fei1,2,YE Xiaoming3, et al. A new type of shear stress model-hyperbolic mechanical model[J]. , 2021, 40(S2): 3253-3260.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.0460 OR https://rockmech.whrsm.ac.cn/EN/Y2021/V40/IS2/3253

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