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Ansys Learning Forum › Forums › Discuss Simulation › General Mechanical › How to apply displacement derivative dependent force on bunch of nodes in apdl? › Reply To: How to apply displacement derivative dependent force on bunch of nodes in apdl?

July 13, 2024 at 2:49 am
mjmiddle
Ansys Employee

When we say "derivative of displacement" in a transient analysis, I would expect the derivative with respect to time, which would be velocity, But dw(x,y,z)/dx shows it is with respect to a spatial variable. So what is your "w" equation? Is this force? So this is the rate the force changes with x you want to apply to each node? This seems strange to me. Or are you just asking how to set a spatially varying force? We can do this by equation. Or if you don't have an equation, and you just have a data file of forces at locations, we can map them to the nodes. Can you clarify what you want?