Ivar KJELBERG
                                                                                                                                                    COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
                                                         
                            
                         
                                                
    
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                                                Posted:
                            
                                1 decade ago                            
                            
                                23 ott 2012, 10:58 GMT-4                            
                        
                        
                                                    Hi
define an analytical function then add in your expression and change the argument to "t", have w and X0, X1 defined as parameter and then plot to check it.
Then in your equation / BC entry write an1(t) or an1(t[1/s]) if you have not set the argument units (you should it's cleaner ...)
--
Good luck
Ivar                                                
                                                
                            Hi
define an analytical function then add in your expression and change the argument to "t", have w and X0, X1 defined as parameter and then plot to check it.
Then in your equation / BC entry write an1(t) or an1(t[1/s]) if you have not set the argument units (you should it's cleaner ...)
--
Good luck
Ivar                        
                                                
                                                                                                            
                                             
                                            
                                                
    
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                                                Posted:
                            
                                1 decade ago                            
                            
                                23 ott 2012, 13:03 GMT-4                            
                        
                        
                                                    Thanx ......
                                                         
                                                
                            Thanx ......
                                 
                                                
                                                                                                            
                                             
                        
                        
                                                
    
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                                                Posted:
                            
                                1 decade ago                            
                            
                                5 gen 2013, 06:40 GMT-5                            
                        
                        
                                                    Hi Ivar
 please help to write the above equation
Y=X0*(1+sin*(w*t))
where
w=2*pi*f (rad/s), t=argument(s)
I have tried with analytical function after defining w in variables and all other constants in parameters.
when I tried to plot it shows following errors:
syntax error in expression
Expression: ()[1/s]
Sub Expression: ()[1/s]
Position 1
rgds
Anup                                                
                                                
                            Hi Ivar
 please help to write the above equation
Y=X0*(1+sin*(w*t))
where
w=2*pi*f (rad/s), t=argument(s)
I have tried with analytical function after defining w in variables and all other constants in parameters.
when I tried to plot it shows following errors:
syntax error in expression
Expression: ()[1/s]
Sub Expression: ()[1/s]
Position 1
rgds
Anup