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|Three-dimensional yield criterion of c-ϕ material
|Takagi, Shunsuke, 1919-
|Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
|Research report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 179.
Summary: A general three-dimensional yield criterion of an ideal soil, called c-ϕ material, is determined that can coincide with the shield yield criterion arid the Drucker-Prager yield criterion by giving appropriate values to the parameters contained. When expressed on an octahedral plane in the principal-stress space, the yield criterion is represented by a hexagon of curved sides formed of conic sections. The geometric relationships satisfied by a family of curved hexagons are investigated.
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