Question: 1. For porous materials the yield function f() is assumed to be f(0) = AJ +(3 A)1 / 3 A is a constant for

1. For porous materials the yield function f() is assumed to be f(0) = AJ +(3 A)1 / 3 A is a constant for a

1. For porous materials the yield function f() is assumed to be f(0) = AJ +(3 A)1 / 3 A is a constant for a given density The yield locus is defined by f(0) =C=Y with Y standing R for apparent yield stress in uniaxial tension. (1) Expand the yield function with complete stress components. (2) Write out the flow rule (6 equations, in complete stress components) (3) Define the effective stress = YR (i.e. expression for the effective strain-rate & ,and . = /2). derive the in terms of and

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1 Expanding the yield function with complete stress components Explanation The yield function for porous materials is given as fsigma AJ2 3 A 12 3 Where A is a constant for a given density J2 is the s... View full answer

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