Nonconvex energy functions. Hemivariational inequalities and substationarity principles

Generalized gradients and applications

Frank H. Clarke · Transactions of the American Mathematical Society · 1975 · 1.2K citations

Generalized Function, Variational Analysis, Geometric Flow +8

A general theory of an elastic-plastic continuum

Anne Green, P. M. Naghdi · Archive for Rational Mechanics and Analysis · 1965 · 921 citations

Materials Science, Nonlinear Elasticity, Engineering +8

Progress in Solid Mechanics

T. M. Charlton · Nature · 1962 · 663 citations · Full text

Engineering, Mechanics, Mechanical Engineering +4

Generalized Directional Derivatives and Subgradients of Nonconvex Functions

R. T. Rockafellar · Canadian Journal of Mathematics · 1980 · 411 citations · Full text

Engineering, Sub Differential, Generalized Function +12

A duality principle for non-convex optimisation and the calculus of variations

John Toland · Archive for Rational Mechanics and Analysis · 1979 · 295 citations

Mathematical Programming, Duality Principle, Engineering +8