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- W2791992559 abstract "In the case of Tresca' solids (i.e. solids obeying the Tresca yield criterion and its associated flow rule) ideal flows have been defined elsewhere as solenoidal smooth deformations in which an eigenvector field associated everywhere with the greatest principal stress (and strain rate) is fixed in the material. Under such conditions all material elements undergo paths of minimum plastic work, a condition which is often advantageous for metal forming processes. Therefore, the ideal flow theory is used as the basis of a procedure for the preliminary design of such processes. The present paper extends the theory of stationary planar ideal flow to pressure dependent materials obeying the double shearing model and the double slip and rotation model. It is shown that the original problem of plasticity reduces to a purely geometric problem. The corresponding system of equations is hyperbolic. The characteristic relations are integrated in elementary functions. In regions where one family of characteristics is straight, mapping between the principal lines and Cartesian coordinates is determined by linear ordinary differential equations. An illustrative example is provided." @default.
- W2791992559 created "2018-03-29" @default.
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- W2791992559 date "2018-02-01" @default.
- W2791992559 modified "2023-09-24" @default.
- W2791992559 title "Ideal flow theory for the double – shearing model as a basis for metal forming design" @default.
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- W2791992559 doi "https://doi.org/10.1088/1757-899x/311/1/012013" @default.
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