Boson peak in disordered materials under shear deformation

PAMM, vol. 23

Abstract

Abstract During a shear process the vibrational mode structure of a non‐crystalline model material will change under load. Thus, we expect an effect on the characteristic boson peak, which correlates with numerous features of disordered materials. In this paper, we perform shear deformation on two‐dimensional random network materials and investigate the distribution of their vibrational density of states (VDOS). Furthermore, the spectra of eigenvalues are studied in detail using similar approaches to investigate the eigenvectors and specifically their change due to load and plastic rearrangements.

Authors 3

1. Tobias Focks corresponding Aachen Institut für Allgemeine Mechanik

   RWTH Aachen University

   Affiliation as printed

   Institut für Allgemeine Mechanik RWTH Aachen University Aachen Germany

2. Bernd A. Markert Aachen Institut für Allgemeine Mechanik

   RWTH Aachen University

   Affiliation as printed

   Institut für Allgemeine Mechanik RWTH Aachen University Aachen Germany

3. Franz Bamer Aachen Institut für Allgemeine Mechanik

   RWTH Aachen University

   Affiliation as printed

   Institut für Allgemeine Mechanik RWTH Aachen University Aachen Germany