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Heat Transfer in Solids+Solid Mechanics boundary conditions
Posted Jul 2, 2014, 3:57 a.m. EDT Heat Transfer & Phase Change, Studies & Solvers, Structural Mechanics Version 4.4 1 Reply
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Hi,
I am trying to simulate the behaviour of optics components when being cooled down from 293K to 4K.I am using Solid Mechanics and Heat Transfer to Solids, where i am applying they temperature to all boundaries. I managed to get results, but am not quite satisfied yet. I am using a fixed constraint boundary condition on the surface where the part is being mounted - which isn't really correct, as this surface won't undergo any thermal contraction in the simulation. I have tried to work with a points(also edge)-fixed constraint condition, but they solution won't converge.
Thanks in advance,
Andi
I am trying to simulate the behaviour of optics components when being cooled down from 293K to 4K.I am using Solid Mechanics and Heat Transfer to Solids, where i am applying they temperature to all boundaries. I managed to get results, but am not quite satisfied yet. I am using a fixed constraint boundary condition on the surface where the part is being mounted - which isn't really correct, as this surface won't undergo any thermal contraction in the simulation. I have tried to work with a points(also edge)-fixed constraint condition, but they solution won't converge.
Thanks in advance,
Andi
1 Reply Last Post Jul 7, 2014, 2:28 a.m. EDT
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Posted:
1 decade ago
Hello,
do you solve in a stationary or time-dependent mode? As far as I can see the material will mainly contract; stresses will develop where this is not possible, i.e. at the fixed constraint. If you use a edge or point fixed constraint this will cause the material to contract everywhere except in this relatively low dimensional region. Therefore the solution contains an error and will return the message: not converged.
If you could send your model to the support, we could tell you more.
Best
Hinrich Arnoldt
do you solve in a stationary or time-dependent mode? As far as I can see the material will mainly contract; stresses will develop where this is not possible, i.e. at the fixed constraint. If you use a edge or point fixed constraint this will cause the material to contract everywhere except in this relatively low dimensional region. Therefore the solution contains an error and will return the message: not converged.
If you could send your model to the support, we could tell you more.
Best
Hinrich Arnoldt