Recently,many authors have generalized the famous Ky Fan’s minimaxinequality.In this paper,we put forward T-diagonal convexity(concavity)conditions anddevelop
Perzyna model in viscoplasticity has been studied by the parametric variationalprinciple,which could be transformed into solving the parametric quadratic progra
In the present paper,the compatibility equation for the plane stress problems of power-law materials is transformed into a biharmonic equation by introducing th