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How to use solved results to couple in other physics?
Posted Aug 2, 2012, 2:25 p.m. EDT Modeling Tools & Definitions, Parameters, Variables, & Functions, Structural Mechanics Version 4.2a, Version 4.3 1 Reply
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Hi
I am a beginner using comsol.
I built a model, which has two physics.
One is Solid mechanics and the other is a PDE solving for another variable (the variable is M).
In the PDE module, M is a function of strains
In the solid mechanics, strain is a function of M.
The two modules are coupled.
In SM module, I solve for strains and feedback to the PDE module
(apple solid.eX, solid.eY, solid.eZ, solid.eXY,.... to PDE)
But it didn't show what I expected when I use this method.
Did I use wrong way feed the strains back to PDE?
How can I apply strains solved in the SM module to PDE?
Thank you~
Best~
I am a beginner using comsol.
I built a model, which has two physics.
One is Solid mechanics and the other is a PDE solving for another variable (the variable is M).
In the PDE module, M is a function of strains
In the solid mechanics, strain is a function of M.
The two modules are coupled.
In SM module, I solve for strains and feedback to the PDE module
(apple solid.eX, solid.eY, solid.eZ, solid.eXY,.... to PDE)
But it didn't show what I expected when I use this method.
Did I use wrong way feed the strains back to PDE?
How can I apply strains solved in the SM module to PDE?
Thank you~
Best~
1 Reply Last Post Aug 3, 2012, 12:47 a.m. EDT
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Posted:
1 decade ago
Hello,
let me rephrase my problem.
In PDE module, I want to solve a equation:
dm/dt = m x H
where H = m*(solid.eX)
and solid.eX is solved from SM module:
grad (sigma) + f = 0 and f= K*m
1. Can I use strain results (solid.eX, solid.eY, solid.eZ,.....) from the solid mechanics module as variables for PDE module?
If can not, how to use strains as variables for PDE?
2. Are those two modules fully coupled? or am I miss something?
I would be appreciated if someone has ideas for this problem
:)
Best
let me rephrase my problem.
In PDE module, I want to solve a equation:
dm/dt = m x H
where H = m*(solid.eX)
and solid.eX is solved from SM module:
grad (sigma) + f = 0 and f= K*m
1. Can I use strain results (solid.eX, solid.eY, solid.eZ,.....) from the solid mechanics module as variables for PDE module?
If can not, how to use strains as variables for PDE?
2. Are those two modules fully coupled? or am I miss something?
I would be appreciated if someone has ideas for this problem
:)
Best