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Détail de l'auteur
Auteur Yang-Ping Yao
Documents disponibles écrits par cet auteur
Affiner la rechercheExtended transformed stress space for geomaterials and its application / Yang-Ping Yao in Journal of engineering mechanics, Vol. 133 N°10 (Octobre 2007)
in Journal of engineering mechanics > Vol. 133 N°10 (Octobre 2007) . - pp.1115-1123
Titre : Extended transformed stress space for geomaterials and its application Type de document : texte imprimé Auteurs : Yang-Ping Yao, Auteur ; An-Nan Zhou, Auteur Année de publication : 2007 Article en page(s) : pp.1115-1123 Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Geomaterials Transformations Material failure Stress Constitutive models Résumé : Because the three-dimensional strength of soil, rock, and concrete is influenced nonlinearly by the hydrostatic pressure and Lode’s angle, the failure surface is irregular in stress space, especially in the large stress range. Based on Lade’s criterion, exponential failure function in coordinate [Math Processing Error] , and the concept of original transformed stress space, an extended transformed stress space and its corresponding transformed stress tensors are proposed in this paper. Compared with original transformed stress space, the extended one would be suitable to the large stress range. Processing test results in extended transformed stress space, the unified stress-strain relationship for a certain geomaterial can be easily obtained from the test results. The validity of extended transformed stress space is confirmed by test results of soil, rock, and concrete. Based on extended transformed stress space and the Modified Cam-Clay Model, a new constitutive model is also proposed in this paper, which can be used to predict three-dimensional stress-strain relationship for soils in the large stress range. The capacity of this model is demonstrated using triaxial test results of Toyoura sand with different stress paths in the large stress range. ISSN : 0733-9399 En ligne : http://ascelibrary.org/action/showAbstract?page=1115&volume=133&issue=10&journal [...] [article] Extended transformed stress space for geomaterials and its application [texte imprimé] / Yang-Ping Yao, Auteur ; An-Nan Zhou, Auteur . - 2007 . - pp.1115-1123.
Mécanique appliquée
Langues : Anglais (eng)
in Journal of engineering mechanics > Vol. 133 N°10 (Octobre 2007) . - pp.1115-1123
Mots-clés : Geomaterials Transformations Material failure Stress Constitutive models Résumé : Because the three-dimensional strength of soil, rock, and concrete is influenced nonlinearly by the hydrostatic pressure and Lode’s angle, the failure surface is irregular in stress space, especially in the large stress range. Based on Lade’s criterion, exponential failure function in coordinate [Math Processing Error] , and the concept of original transformed stress space, an extended transformed stress space and its corresponding transformed stress tensors are proposed in this paper. Compared with original transformed stress space, the extended one would be suitable to the large stress range. Processing test results in extended transformed stress space, the unified stress-strain relationship for a certain geomaterial can be easily obtained from the test results. The validity of extended transformed stress space is confirmed by test results of soil, rock, and concrete. Based on extended transformed stress space and the Modified Cam-Clay Model, a new constitutive model is also proposed in this paper, which can be used to predict three-dimensional stress-strain relationship for soils in the large stress range. The capacity of this model is demonstrated using triaxial test results of Toyoura sand with different stress paths in the large stress range. ISSN : 0733-9399 En ligne : http://ascelibrary.org/action/showAbstract?page=1115&volume=133&issue=10&journal [...]
in Journal of engineering mechanics > Vol. 133 N°10 (Octobre 2007) . - pp.1115-1123
Titre : Extended transformed stress space for geomaterials and its application Type de document : texte imprimé Auteurs : Yang-Ping Yao, Auteur ; An-Nan Zhou, Auteur Année de publication : 2007 Article en page(s) : pp.1115-1123 Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Geomaterials Transformations Material failure Stress Constitutive models Résumé : Because the three-dimensional strength of soil, rock, and concrete is influenced nonlinearly by the hydrostatic pressure and Lode’s angle, the failure surface is irregular in stress space, especially in the large stress range. Based on Lade’s criterion, exponential failure function in coordinate [Math Processing Error] , and the concept of original transformed stress space, an extended transformed stress space and its corresponding transformed stress tensors are proposed in this paper. Compared with original transformed stress space, the extended one would be suitable to the large stress range. Processing test results in extended transformed stress space, the unified stress-strain relationship for a certain geomaterial can be easily obtained from the test results. The validity of extended transformed stress space is confirmed by test results of soil, rock, and concrete. Based on extended transformed stress space and the Modified Cam-Clay Model, a new constitutive model is also proposed in this paper, which can be used to predict three-dimensional stress-strain relationship for soils in the large stress range. The capacity of this model is demonstrated using triaxial test results of Toyoura sand with different stress paths in the large stress range. ISSN : 0733-9399 En ligne : http://ascelibrary.org/action/showAbstract?page=1115&volume=133&issue=10&journal [...] [article] Extended transformed stress space for geomaterials and its application [texte imprimé] / Yang-Ping Yao, Auteur ; An-Nan Zhou, Auteur . - 2007 . - pp.1115-1123.
Mécanique appliquée
Langues : Anglais (eng)
in Journal of engineering mechanics > Vol. 133 N°10 (Octobre 2007) . - pp.1115-1123
Mots-clés : Geomaterials Transformations Material failure Stress Constitutive models Résumé : Because the three-dimensional strength of soil, rock, and concrete is influenced nonlinearly by the hydrostatic pressure and Lode’s angle, the failure surface is irregular in stress space, especially in the large stress range. Based on Lade’s criterion, exponential failure function in coordinate [Math Processing Error] , and the concept of original transformed stress space, an extended transformed stress space and its corresponding transformed stress tensors are proposed in this paper. Compared with original transformed stress space, the extended one would be suitable to the large stress range. Processing test results in extended transformed stress space, the unified stress-strain relationship for a certain geomaterial can be easily obtained from the test results. The validity of extended transformed stress space is confirmed by test results of soil, rock, and concrete. Based on extended transformed stress space and the Modified Cam-Clay Model, a new constitutive model is also proposed in this paper, which can be used to predict three-dimensional stress-strain relationship for soils in the large stress range. The capacity of this model is demonstrated using triaxial test results of Toyoura sand with different stress paths in the large stress range. ISSN : 0733-9399 En ligne : http://ascelibrary.org/action/showAbstract?page=1115&volume=133&issue=10&journal [...]
in Journal of engineering mechanics > Vol. 138 N° 7 (Juillet 2012) . - pp.853–866.
Titre : Extended UH model : Three - dimensional unified hardening model for anisotropic clays Type de document : texte imprimé Auteurs : Yang-Ping Yao, Auteur ; Yu-Xia Kong, Auteur Année de publication : 2012 Article en page(s) : pp.853–866. Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Anisotropy Strength Stress strain relations Clays Résumé : Extended UH model is a three-dimensional elastoplastic constitutive model that builds on a modification of the UH model with a unified hardening parameter, to account for the effect of anisotropy and the influence of K0 consolidation on the stress-strain-strength behavior of clays. The combined effects of anisotropy and stress magnitude are considered through the minimum value of angles (α) made by the spatially mobilized planes (SMPs) and soil depositional plane. The original transformed stress tensor is revised by incorporating the anisotropic peak stress ratio Mα, which is defined as a function of α, with the stress tensor σij. The comparison with test results on San Francisco Bay Mud demonstrates the capability of the proposed anisotropic criterion. The UH model is extended to account for the combined effects of inherent anisotropy and K0 conditions on the stress-strain-strength response of anisotropic clays by incorporating the revised transformed stress tensor σij˜, the potential strength ratio Mf, the characteristic stress ratio M, and the state stress ratio η˜a. A series of undrained triaxial tests on isotropically and anisotropically consolidated specimens with different overconsolidation ratios (OCRs) are successfully predicted using the proposed extended UH model. New parameters for anisotropic soils can be determined conveniently from the conventional triaxial compression tests on vertical and horizontal specimens. ISSN : 0733-9399 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29EM.1943-7889.0000397 [article] Extended UH model : Three - dimensional unified hardening model for anisotropic clays [texte imprimé] / Yang-Ping Yao, Auteur ; Yu-Xia Kong, Auteur . - 2012 . - pp.853–866.
Mécanique appliquée
Langues : Anglais (eng)
in Journal of engineering mechanics > Vol. 138 N° 7 (Juillet 2012) . - pp.853–866.
Mots-clés : Anisotropy Strength Stress strain relations Clays Résumé : Extended UH model is a three-dimensional elastoplastic constitutive model that builds on a modification of the UH model with a unified hardening parameter, to account for the effect of anisotropy and the influence of K0 consolidation on the stress-strain-strength behavior of clays. The combined effects of anisotropy and stress magnitude are considered through the minimum value of angles (α) made by the spatially mobilized planes (SMPs) and soil depositional plane. The original transformed stress tensor is revised by incorporating the anisotropic peak stress ratio Mα, which is defined as a function of α, with the stress tensor σij. The comparison with test results on San Francisco Bay Mud demonstrates the capability of the proposed anisotropic criterion. The UH model is extended to account for the combined effects of inherent anisotropy and K0 conditions on the stress-strain-strength response of anisotropic clays by incorporating the revised transformed stress tensor σij˜, the potential strength ratio Mf, the characteristic stress ratio M, and the state stress ratio η˜a. A series of undrained triaxial tests on isotropically and anisotropically consolidated specimens with different overconsolidation ratios (OCRs) are successfully predicted using the proposed extended UH model. New parameters for anisotropic soils can be determined conveniently from the conventional triaxial compression tests on vertical and horizontal specimens. ISSN : 0733-9399 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29EM.1943-7889.0000397
