A thermo-mechanical cohesive zone model accounting for mechanically energetic Kapitza interfaces

Esmaeili, A., Javili, A. and Steinmann, P. (2016) A thermo-mechanical cohesive zone model accounting for mechanically energetic Kapitza interfaces. International Journal of Solids and Structures, 92-93, pp. 29-44. (doi: 10.1016/j.ijsolstr.2016.04.035)

Abstract

Interfaces can play a dominant role in the thermo-mechanical response of a body. The importance of interfaces is more pronounced as the problem scale decreases since the interface area to the bulk volume ratio grows. The objective of this contribution is to study computational aspects of modeling thermo-mechanical solids containing mechanically energetic, geometrically non-coherent Kapitza interfaces under cyclic loading. The interface is termed energetic in the sense that it possesses its own energy, entropy, constitutive relations and dissipation. To date, classical thermo-mechanical cohesive zone models do not account for elastic interfaces. Therefore we propose a novel interface model that couples the classical cohesive zone formulation to the interface elasticity theory under the Kapitza assumption within a thermo-mechanical framework. In other words, such an interface model allows for discontinuities in geometry, temperature and normal stress fields, while not permitting a jump in the normal heat flux across the interface.

• Item Type: Articles
• Additional Information: This research is performed as part of the Energie Campus Nuremberg and supported by funding through the “Bavaria on the Move” initiative of the state of Bavaria.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Steinmann, Professor Paul
• Authors: Esmaeili, A., Javili, A., and Steinmann, P.
• College/School: College of Science and Engineering > School of Engineering > Infrastructure and Environment
• Journal Name: International Journal of Solids and Structures
• Publisher: Elsevier
• ISSN: 0020-7683
• ISSN (Online): 1879-2146
• Published Online: 04 May 2016