Analytic field

[SothunN]

Hello everyone. I want to apply varying traction force onto the surface and I have this kind of expression Y2-Y1/sqrt(pow(X2-X1,2)+pow(Y2-Y1,2)) to construct into the analytic field. By default, in the analytic field, we can input X or Y parameters only so how can I construct this kind of expression in the analytic field of Abaqus or is there any way that I can convert this expression to get only X and Y parameters? Thanks, in advance!!

 

[FEA way]

What do these X1, X2, Y1 and Y2 parameters represent?

 

[SothunN]

They have represented the different coordinates of each node.

 

[FEA way]

Abaqus/CAE will evaluate the expression and calculate proper values of *DLOAD for each element before running the analysis (you can see the resulting values in the .inp file) so you could replace those parameters with coordinates. If you want it to be done automatically, you will have to use Python scripting or DLOAD subroutine. Or create a mapped field in which load magnitude is given for each specified point.

 

[SothunN]

Thank you for your answer. Otherwise, I used to replace those parameters with coordinates in the analytic field but I got a message "there is no parameter X or Y". And this expression I use to express the outward normal vector of traction force. And one more thing is the analytical solution I got as a point load but I want to use it to apply varying loads on the elements in ABAQUS so can I do that? And the expression above is my analytical solution of the outward normal vector!!