Publication 23-CNA-012

Deformation Decomposition versus Energy Decomposition for Chemo- and Poro- Mechanics

Janel Chua
Department of Civil and Environmental Engineering
Carnegie Mellon University
Pittsburgh, PA
janelchua@gmail.com

Mina Karimi
Department of Mechanical and Civil Engineering
California Institute of Technology

Patrick Kozlowski
Department of Civil and Environmental Engineering
Carnegie Mellon University
Pittsburgh, PA 15213

Mehrdad Massoudi
National Energy Technology Laboratory (NETL)
Pittsburgh, PA

Santosh Narasimhachary
Siemens Corporation

Kai Kadau
Siemens Energy Inc

George Gazonas
DEVCOM Army Research Laboratory
Aberdeen Proving Ground, 21005 MD, USA

Kaushik Dayal
Center for Nonlinear Analysis
Department of Civil and Environmental Engineering
Department of Materials Science and Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
Kaushik.Dayal@cmu.edu

Abstract: We briefly compare the structure of two classes of popular models used to describe poro- and chemo- mechanics wherein a fluid phase is transported within a solid phase. The multiplicative deformation decomposition has been successfully used to model permanent inelastic shape change in plasticity, solid-solid phase transformation, and thermal expansion, which has motivated its application to poro- and chemo- mechanics. However, the energetic decomposition provides a more transparent structure and advantages, such as to couple to phase-field fracture, for models of poro- and chemo- mechanics.

Get the paper in its entirety as  23-CNA-012.pdf

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