Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Failure Criterion: The Micromechanical Basis of Coulomb Criterion
Under wide three‐dimensional stress conditions, the eventuality of a failure criterion is investigated inside the macroscopic dissipation equation, under stationary specific volume condition. The concept of failure criterion, and specifically the Coulomb Criterion, plays a key role in soil mechanics and its applications in civil engineering, particularly to design and verify geotechnical works with a specified safety margin against shear failure. In solid materials like concrete or rocks, “failure” corresponds to the development of microcracks and flaws up to the emergence of macro‐scale discontinuities, and the Coulomb Criterion appears explicitly in the micromechanical analysis of the onset of microcrack propagation. The common failure criteria are commonly represented by a surface in the principal stress space. This chapter highlights the link between least shear resistance and least dissipation: if a criterion of least dissipation is investigated, it is found to correspond mostly with the criterion of least shear resistance.
Failure Criterion: The Micromechanical Basis of Coulomb Criterion
Under wide three‐dimensional stress conditions, the eventuality of a failure criterion is investigated inside the macroscopic dissipation equation, under stationary specific volume condition. The concept of failure criterion, and specifically the Coulomb Criterion, plays a key role in soil mechanics and its applications in civil engineering, particularly to design and verify geotechnical works with a specified safety margin against shear failure. In solid materials like concrete or rocks, “failure” corresponds to the development of microcracks and flaws up to the emergence of macro‐scale discontinuities, and the Coulomb Criterion appears explicitly in the micromechanical analysis of the onset of microcrack propagation. The common failure criteria are commonly represented by a surface in the principal stress space. This chapter highlights the link between least shear resistance and least dissipation: if a criterion of least dissipation is investigated, it is found to correspond mostly with the criterion of least shear resistance.
Failure Criterion: The Micromechanical Basis of Coulomb Criterion
Frossard, Etienne (Autor:in)
30.10.2018
19 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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