Request raction forces at crack tips? 1

[Bigtree]

Hi, I request RF in the history output at the crack front, but it gave me zero? How come?

 

[corus]

Because the reaction force is zero everywhere except at a restraint.

corus

 

[Bigtree]

Thanks. So I need to constraint the crack tip/front, right?

 

[corus]

No. If you want to see the forces acting at the tip then ask for the individual element nodal forces. The sum of all the element nodal forces at one coincident node will, of course, be zero.

corus

 

[Bigtree]

I see. Thanks.