Cohesive Zone Damage-Healing Model for Self-Healing Materials

Abstract:

A cohesive zone damage-healing model (CZDHM) derived based on the laws of thermodynamics for self-healing materials is presented. The well-known nominal, healing, and effective configurations of classical continuum damage mechanics are extended to self-healing materials. A new physically-based internal crack healing state variable is proposed for describing the healing evolution within the crack cohesive zone. The effects of temperature, crack-closure, and resting time on the healing behavior are discussed. Numerical examples are conducted to show the various novel features of the formulated CZDHM.

• Periodical: Applied Mechanics and Materials (Volume 784)
• Pages: 111-118
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.784.111
• Online since: August 2015
• Authors: Rashid K. Abu Al-Rub*, Ammar Alsheghri
• Keywords: Cohesive Zone, Crack-Closure, Damage Mechanics, Healing

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