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research-article

Simulation of Laser-induced Controlled Fracturing Utilizing a Phase Field Model

[+] Author and Article Information
Alexander Schlüter

Institute of Applied Mechanics and Computational Mechanics, University of Kaiserslautern,
aschluet@rhrk.uni-kl.de

Charlotte Kuhn

Computational Mechanics, University of Kaiserslautern
chakuhn@rhrk.uni-kl.de

Ralf Mueller

Institute of Applied Mechanics, University of Kaiserslautern
ram@rhrk.uni-kl.de

1Corresponding author.

ASME doi:10.1115/1.4034385 History: Received December 20, 2015; Revised July 31, 2016

Abstract

This work presents an approach to simulate laser cutting of ceramic substrates utilizing a phase field model for brittle fracture. To start with, the necessary thermoelastic exten- sion of the original phase field model is introduced. Here, the Beer-Lambert law is used in order to model the effect of the laser on the substrate. The arising system of partial dif- ferential equations - which comprises the balance of linear momentum, the energy balance and the evolution equation that governs crack propagation - is solved by a monolithic fi- nite element scheme. Lastly, the influences of the laser power and the initial groove size on the manufactured work piece are analyzed numerically in simulations of a laser cutting process.

Copyright (c) 2016 by ASME
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