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Laser Bending Moving Heat Source

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Hello, I am very new to COMSOL and I'm trying to model laser bending. I want to take a simple heat source and move it across a thin metal plate to see how it deforms. However I'm struggling on how to get the heat source to move across the plate. I've looked at a couple of tutorials particular, "3 Approaches to Modeling Moving Loads and Constraints in COMSOL by Walter Frei". I like method 1 with using variables, but I can't for the life of me figure out how to make it move in a straight line, at a specfic location on the metal plate. I know this a really basic thing, but I'm still learning comsol as I use it. If anyone could point out some more resoures to help me understand how the variables work in heat transfer, or help with my problem that would be great, thank you.


1 Reply Last Post 18 oct. 2021, 15:25 UTC−4
Jeff Hiller COMSOL Employee

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Posted: 3 years ago 18 oct. 2021, 15:25 UTC−4
Updated: 3 years ago 18 oct. 2021, 15:26 UTC−4

Hi Trevor,

Something like

will have the focus move at velocity v at an angle alpha to the x axis, starting from (a,b) at t=0.

Best, Jeff

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Jeff Hiller
Hi Trevor, Something like x_{focus}= cos(alpha)*v*t+a y_{focus}= sin(alpha)*v*t+b will have the focus move at velocity v at an angle alpha to the x axis, starting from (a,b) at t=0. Best, Jeff

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