AndreRodrigues
Structural
I'm trying to model a large section of soil subjected to impact loads.
Since the soil should behave like an elastic half-space, I need to set some non-reflecting boundary conditions (NRB).
According to the manual, I should select the desired nodes with the NSEL command, creating a component from all those nodes with CM and finally apply the non-reflecting boundaries with EDNB, turning on the Dilatational activation flag and the Shear activation flag.
Input-wise,it comes down to:
NSEL,S,LOC,X,hx !selecting all desired nodes
CM,planox,NODE !creating the component from the nodes
EDNB,ADD,planox,1,1 !adding the non-reflecting boundary to it
However, I'm getting the exact same results with free boundaries, the NRBs aren't changing anything, I still get lots of reflected waves.
I'm using 3dsolid164 elements, with linear-elastic isotropic material.
Has anyone been able to use this boundaries correctly?
If more information about the model is needed do say, I'm just boiling it down to the essentials.
Since the soil should behave like an elastic half-space, I need to set some non-reflecting boundary conditions (NRB).
According to the manual, I should select the desired nodes with the NSEL command, creating a component from all those nodes with CM and finally apply the non-reflecting boundaries with EDNB, turning on the Dilatational activation flag and the Shear activation flag.
Input-wise,it comes down to:
NSEL,S,LOC,X,hx !selecting all desired nodes
CM,planox,NODE !creating the component from the nodes
EDNB,ADD,planox,1,1 !adding the non-reflecting boundary to it
However, I'm getting the exact same results with free boundaries, the NRBs aren't changing anything, I still get lots of reflected waves.
I'm using 3dsolid164 elements, with linear-elastic isotropic material.
Has anyone been able to use this boundaries correctly?
If more information about the model is needed do say, I'm just boiling it down to the essentials.