A ferroelectric phase field study of nanoindentation contact mechanics

Oluwafemi Ogunlana; William S. Oates

doi:10.1117/12.3010958

9 May 2024 A ferroelectric phase field study of nanoindentation contact mechanics

Oluwafemi Ogunlana, William S. Oates

Proceedings Volume 12947, Behavior and Mechanics of Multifunctional Materials XVIII; 1294705 (2024) https://doi.org/10.1117/12.3010958
Event: SPIE Smart Structures + Nondestructive Evaluation, 2024, Long Beach, California, United States

Abstract

This study employs a phase field modeling framework to understand complex ferroelectric domain structure evolution near a surface that is under contact mechanical loading. Lead titanate is used as a model material to understand how indentation contact deformation leads to ferroelectric domain switching near the stress singularity of the indent. We investigate the evolution of a 180° ferroelectric domain wall using the time-dependent Ginzburg-Landau (TDGL) equation. The phase field method is used to simulate both the ferroelectric domain structures and the evolution of the contact surface. The phase field method is applied to the contact problem to facilitate computing stress concentrations from complex contact interfaces. This research is aimed at formulating a model that can deepen our understanding of ferroelectric material switching under a variety of complex surface loading to enhance fracture toughness and electromechanical material performance through deformation near the surface.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Oluwafemi Ogunlana and William S. Oates "A ferroelectric phase field study of nanoindentation contact mechanics", Proc. SPIE 12947, Behavior and Mechanics of Multifunctional Materials XVIII, 1294705 (9 May 2024); https://doi.org/10.1117/12.3010958

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available