scholarly journals Comparative Analysis of Common Strength Criteria of Soil Materials

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4302
Author(s):  
Ping Xu ◽  
Zhijun Sun ◽  
Shengjun Shao ◽  
Lingyun Fang
Keyword(s):  
Failure Criterion ◽  
Triaxial Test ◽  
Three Dimensional ◽  
Strength Criterion ◽  
Failure Criteria ◽  
Theory And Practice ◽  
Engineering Practice ◽  
Test Results ◽  
True Triaxial Test ◽  
True Triaxial

In this paper, the common failure criteria of existing soil materials, such as the Mohr–Coulomb criterion, Drucker–Prager criterion, Lade–Duncan criterion, Matsuoka–Nakai criterion andAC-SMP criterion are systematically discussed, and the applicability of these criteria is quantitatively analyzed through the true triaxial test results of loess, so as to provide reference for the accurate selection of specific criteria in engineering practice. The failure criteria are classified from several aspects, such as whether the influence of the intermediate principal stress and the change of spatial moving plane are considered, analyzed and discussed, respectively. According to the true triaxial test results of undisturbed loess, the difference of strength criterion between the three-dimensional failure plane and p-q plane is analyzed, and based on the true triaxial test data of undisturbed loess, the error analysis of each failure criterion is carried out. The results show that the AC-SMP criterion is in good agreement with the test results, and can accurately evaluate the true triaxial test of loess. For different soil materials or different stress states, it is necessary to select appropriate failure criteria. This study shows how to choose the corresponding failure criterion under specific circumstances, so as to better satisfy the theory and practice and provide reference for engineering.

scholarly journals A Simple Three-Dimensional Failure Criterion for Jointed Rock Masses under True Triaxial Compression

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Yaohui Gao ◽  
Chunsheng Zhang ◽  
Zhaofeng Wang ◽  
Jun Chen
Keyword(s):  
Failure Criterion ◽  
Triaxial Compression ◽  
Three Dimensional ◽  
Friction Angle ◽  
Failure Criteria ◽  
Jointed Rock ◽  
Rock Masses ◽  
True Triaxial ◽  
Jointed Rock Masses ◽  
Triaxial Strength

The joint configuration and the intermediate principal stress have a significant influence on the strength of rock masses in underground engineering. A simple three-dimensional failure criterion is developed in this study to predict the true triaxial strength of jointed rock masses. The proposed failure criterion in the deviatoric and meridian planes adopts the elliptic and hyperbolic forms to approximate the Willam–Warnke and Mohr–Coulomb failure criterion, respectively. The four parameters in the proposed failure criterion have close relationships with the cohesion and the internal friction angle and can be linked with the joint inclination angle using a cosine function. Two suits of true triaxial strength data are collected to validate the correctness of the proposed failure criterion. Compared with other failure criteria, the proposed failure criterion is more reasonable and acceptable to describe the strength of jointed rock masses.

Study on Strength of Shanghai Marine Clay by True Triaxial Test

2012 ◽  
Author(s):  
Jia-ren Sheng ◽  
Chao-jun Wu ◽  
Guan-lin Ye ◽  
Jian-hua Wang
Keyword(s):  
Soft Soil ◽  
Three Dimensional ◽  
Stress Path ◽  
Failure Criteria ◽  
Yangtze River Delta ◽  
Triaxial Tests ◽  
True Triaxial Test ◽  
Marine Clay ◽  
Undisturbed Soil ◽  
True Triaxial

Shanghai locates on the east tip of Yangtze River Delta facing the East China Sea. Shanghai marine clay owns some particular properties. However, the report on the mechanical properties of Shanghai marine clay is rather rare. The three-dimensional strength and deformation characteristics of soft soil are dependent on the stress conditions. In this study, a series of isotropic consolidated drained true triaxial tests are carried out with an automatically controlled mixed rigid-flexible boundary true triaxial apparatus. Undisturbed soil sample is prepared by the block sampling method. 5 drained tests with stress path in the same π plane along different Lode angles are performed. Tests results show that the intermediate stress has large influence on the yielding and failure of Shanghai marine clay. Three dimensional strength of Shanghai marine clay generally obeys the SMP failure criteria.

A Three-Dimensional Failure Criterion for Hard Rocks Under True Triaxial Compression

2019 ◽  
Vol 53 (1) ◽  
pp. 103-111 ◽  
Author(s):  
Xia-Ting Feng ◽  
Rui Kong ◽  
Chengxiang Yang ◽  
Xiwei Zhang ◽  
Zhaofeng Wang ◽  
...  
Keyword(s):  
Failure Criterion ◽  
Triaxial Compression ◽  
Three Dimensional ◽  
True Triaxial ◽  
Hard Rocks ◽  
True Triaxial Compression

A strain energy criterion for failure of floating ice sheets

1978 ◽  
Vol 5 (3) ◽  
pp. 352-361 ◽  
Author(s):  
S. Beltaos
Keyword(s):  
Failure Criterion ◽  
Strain Energy ◽  
Unit Volume ◽  
Ice Sheets ◽  
Ice Sheet ◽  
Energy Criterion ◽  
Failure Criteria ◽  
Test Results ◽  
Practical Limit ◽  
Loading Tests

A failure criterion for floating ice sheets under stationary loads is presented, based on the concept of strain energy per unit volume and the results of some 40 prototype loading tests. The practical requirement for a time-independent failure criterion for ice, which is a viscoelastic material and thus subject to creep, is noted. Existing failure criteria are reviewed and shown to be unable to handle many practical situations. Subsequently, the concept of strain energy per unit volume is formulated and shown to provide a satisfactory failure criterion under varied loading histories. Analysis of the test results indicated the existence of a distinct instant marking the onset of failure of a loaded ice sheet. Because the behaviour of a loaded ice sheet between this instant and the final breakthrough of the load is partially random, it is suggested that the former be used as the practical limit of safety.

Large-Scale True Triaxial Test on Stress-Strain and Strength Properties of Rockfill

2020 ◽  
Vol 20 (1) ◽  
pp. 04019146 ◽  
Author(s):  
Jiajun Pan ◽  
Jiwei Jiang ◽  
Zhanlin Cheng ◽  
Han Xu ◽  
Yongzhen Zuo
Keyword(s):  
Triaxial Test ◽  
Large Scale ◽  
Strength Properties ◽  
True Triaxial Test ◽  
Stress Strain ◽  
True Triaxial

scholarly journals A novel true triaxial test system for microwave-induced fracturing of hard rocks

2021 ◽  
Author(s):  
Xia-Ting Feng ◽  
Jiuyu Zhang ◽  
Chengxiang Yang ◽  
Jun Tian ◽  
Feng Lin ◽  
...  
Keyword(s):  
Triaxial Test ◽  
Test System ◽  
True Triaxial Test ◽  
True Triaxial ◽  
Hard Rocks

DISCOVERING FAILURE CRITERIA OF COMPOSITES BY SPARSE IDENTIFICATION AND COMPRESSED SENSING

2021 ◽  
Author(s):  
FEI TAO ◽  
XIN LIU ◽  
HAODONG DU ◽  
WENBIN YU
Keyword(s):  
Compressed Sensing ◽  
Failure Criterion ◽  
Failure Criteria ◽  
Engineering Practice ◽  
The Past ◽  
Failure Data ◽  
Failure Models ◽  
Reliable Design ◽  
Fiber Modes ◽  
First World

A reliable design of a composite structure needs to consider the failure of the composites. Hashin failure criterion is one of the most popular phenomenological models in engineering practice due to its simplicity of application. Although remarkable success has been achieved from the Hashin failure criterion, it does not always fit the experimental results very well. Over the past few years, a few experimental failure data have been collected. It would be of interest to leverage the existing data to improve the prediction of failure criteria. In this paper, we proposed to apply a framework that combines sparse regression with compressed sensing to discover failure criteria from data. Following the phenomenological failure models, we divided the failure of composites into tensile and compressive fiber modes, tensile and compressive matrix modes. Two examples were studied with the proposed framework. The first example was presented to demonstrate the capability of the framework. The data was generated by the Hashin failure criterion and added various magnitudes of noise. The proposed framework was implemented to discover the failure criterion from the noised data. For the second example, the proposed method was used to discover failure criteria from the experimental data which are collected from the first world wide failure exercise (WWFE I). Both examples show that the proposed method can discover the failure criteria accurately.

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