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                                                Posted:
                            
                                9 months ago                            
                            
                                24 janv. 2025, 18:38 UTC−5                            
                        
                        
                                                    I think you want to model thermal expansion due to temperature variation. This is a built-in multiphysics coupling using Solid Mechanics and Heat Transfer in Solids. No need for moving mesh.
                                                 
                                                
                            I think you want to model thermal expansion due to temperature variation. This is a built-in multiphysics coupling using Solid Mechanics and Heat Transfer in Solids. No need for moving mesh.                         
                                                
                                                                                                            
                                             
                        
                        
                            
                                                                                        
                                Jeff Hiller
                                                                                                                                                    COMSOL Employee
                                                         
                            
                                                                                                                                                
                         
                                                
    
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                                                Posted:
                            
                                9 months ago                            
                            
                                27 janv. 2025, 08:39 UTC−5                            
                        
                        Updated:
                            
                                9 months ago                            
                            
                                27 janv. 2025, 08:44 UTC−5                            
                        
                        
                                                    Hello Rayian,
As David pointed out, thermal expansion in solids is pre-implemented in the software. Note that this is a feature found in the optional Structural Mechanics Module and in the optional MEMS Module. To see if your license includes either of these two products, go to File >  Licensed and Used Products.
It is also possible to add thermal expansion without either of those modules by adding terms to the equations, as illustrated in this tutorial.
Best regards,
Jeff
    -------------------
    Jeff Hiller                                                
 
                                                
                            Hello Rayian,
As David pointed out, thermal expansion in solids is pre-implemented in the software. Note that this is a feature found in the optional Structural Mechanics Module and in the optional MEMS Module. To see if your license includes either of these two products, go to File >  Licensed and Used Products.
It is also possible to add thermal expansion without either of those modules by adding terms to the equations, as illustrated in [this tutorial](https://www.comsol.com/model/thermal-microactuator-simplified-16357).
Best regards,
Jeff