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,

Charlotte Kuhn

Computational Mechanics, University of Kaiserslautern

Ralf Mueller

Institute of Applied Mechanics, University of Kaiserslautern

1Corresponding author.

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


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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