Thermal diffusion analysis by using dual horizon peridynamics

Abstract

In this study, Dual Horizon Peridynamics formulation is presented for thermal diffusion analysis. Lagrangian formalism is utilized to derive the governing equations. The proposed formulation allows utilization of variable discretization and horizon sizes inside the solution domain which can result in significant benefits in terms of computational time. To demonstrate the capability of the Dual Horizon Peridynamics formulation, three different example problems are considered including a square plate with temperature and no flux boundary conditions, a square plate under thermal shock loading, and a square plate with an insulated crack. For all problems that are considered good agreement is obtained between peridynamics (PD) predictions and finite element method (FEM) results.

Keywords:

• Dual Horizon
• non-local
• peridynamics
• thermal diffusion

Additional information

Funding

This material is based upon work supported by the Air Force Office of Scientific Research under award number FA9550-18-1-7004.