I am working on laser cutting of CFRP(carbon-fibre-reinforced polymer) composite. Based on the experimental data, I have modelled the laser cutting of the CFRP composite sample in ANSYS APDL. I am trying to find the kerf width, both at the top and bottom of the sample. For that, I am killing the elements which are above 1155k(which is the decomposition temperature).
Problem: I am not getting a through cut, because the temperature at the bottom is not reaching 1155K.
Where am I going wrong? Open to all the suggestion.
Problem details:
Sample dimension: 1x1x1.4 mm^3, the sample thickness is kept the same as that of the experiment, but the length and the width were reduced due to limited computation resource.
Boundary conditions: convection heat loss from all the surfaces
Material properties: variable thermal conductivity, specific heat and density are taken as constants.
Laser specification: laser power:340 W, laser spot diameter: 0.2mm
In my opinion, as a debugging first reduce the thickness and see if your code truly works, then check the convection value maybe.
Hello Kouider Bendine, thank you for your suggestions. The code is working fine, in my opinion, as you can see in the video. I am getting very high temperature (around 3000000 K).
I will recheck the convective heat transfer coefficient value.
Kumar Ujjwal I am not sure but maybe u can use a bigger time step while moving the source of heat to allow more conduction.
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