Interaction of defects in disordered materials – Insights from a nonlinear decomposition of the nonaffine displacement field

PAMM, vol. 23

Abstract

Abstract In this paper, we link the unique mechanical properties to structural aspects using a splitting method in order to disentangle nonlinear interactions of Stone–Wales defects as fundamental perturbations in a crystalline environment. We investigate the spatial features of the displacement field achieved by this splitting method and couple it to macroscopic material properties. The nonlinear interaction broadens the understanding of material failure at the onset of disorder and may also play a role in the emergence of the Boson peak.

Authors 5

1. Tobias Focks corresponding Aachen Institute of General Mechanics

   RWTH Aachen University

   Affiliation as printed

   Institute of General Mechanics RWTH Aachen University Aachen Germany

   Institute of General Mechanics, RWTH Aachen University, Aachen, Germany

2. Franz Bamer Aachen Institute of General Mechanics

   RWTH Aachen University

   Affiliation as printed

   Institute of General Mechanics RWTH Aachen University Aachen Germany

   Institute of General Mechanics, RWTH Aachen University, Aachen, Germany

3. Zhao Wu Aachen Institute of General Mechanics

   RWTH Aachen University

   Affiliation as printed

   Institute of General Mechanics RWTH Aachen University Aachen Germany

   Institute of General Mechanics, RWTH Aachen University, Aachen, Germany

4. Bernd A. Markert Aachen Institute of General Mechanics

   RWTH Aachen University

   Affiliation as printed

   Institute of General Mechanics RWTH Aachen University Aachen Germany

   Institute of General Mechanics, RWTH Aachen University, Aachen, Germany

5. Benjamin Stamm

   University of Stuttgart

   Affiliation as printed

   Institute of Applied Analysis and Numerical Simulation University of Stuttgart Stuttgart Germany

   Institute of Applied Analysis and Numerical Simulation, University of Stuttgart, Stuttgart, Germany