An iterative nonlocal residual constitutive model for nonlocal elasticity

In this study, it is demonstrated that solutions of nonlocal elasticity problems are exist, and Eringen’s constitutive model cannot determine these solutions. To overcome the limitations of Eringen’s constitutive models, novel integral and differential iterative nonlocal residual constitutive models are proposed. Using these two constitutive models, the sum of the nonlocal residual field at a point is iteratively formed. Then, his nonlocal residual is imposed to the local boundary value problem. Thus, the nonlocal elasticity is obtained in the form of a local boundary value problem with an imposed nonlocal residual field. Using any of these constitutive models, a solution is guaranteed for a nonlocal field problem. To show the effectiveness of the proposed constitutive models, the nonlocal field problems of beams with different natural boundary conditions are considered. The results of the proposed integral and differential constitutive models are identical and feasible.