Learning Forum

[ayush_3]

I was performing the transient analysis and want to apply external triangular excitation to the outer part of the geometry. When I insert acceleration from the option, it can only be applied to the entire geometry and cannot be scoped to the outer part. There is no option for the Remote Acceleration in the Transient Analysis. What do I do to have the acceleration to only the outer part of my geometry? See figure below.

[ErKo]

Can you try to explain what you are doing, and what you want to analyse (how would you apply acceleration to one part in reality if it is bonded to some other parts).

Why not apply a force (can be applied to a single body)? Since as you correctly said the acceleration is for all bodies as shown in your image.

Thank you

Erik

[ayush_3]

I want that outer body to shake and see the deformation and acceleration of the inner article, which has been padded with hyperelastic material from the outer covering. How do I achieve this?
I was thinking of applying the shocks in the form of acceleration to the body's outer covering and seeing the inner article response. But you are saying this isn't possible.
Should I fix the inner article's inner surface in the direction in which shocks (acceleration) have been applied? Will that do what I want to achieve?
One more doubt: What does it mean when Ansys apply acceleration to all bodies, there must be some point/surface onto which acceleration has been applied, so what is that point/surface?

[ErKo]

That is much clearer now.

See the reference and help manual for accelerations in a transient analysis (acceleration is a global load and is applied to the entire model).

So in general, you need to model and capture the physics of this part as it is in its physical environment, hence apply the closest boundary conditions and loads that represent the real physical situation.

E.g., one could use a force (which will cause movement of the outer part) scoped to the outer part (say an outer face) and see how much is transmitted to the inner part, just as one can do when looking at transmission and vibration isolators.

All the best

Erik

[ayush_3]

Someone on Youtube says we can apply acceleration to components and individual bodies using APDL commands, and I have no idea about this. Can you please confirm?

Thanks

[ErKo]

Hi

Please ask that person (on youtube), to clarify how it was done.

Thank you

Erik

[Shirsa Nandy]

Hi. Could you kindly provide the link to that youtube video and could you resolve your issue? I am also facing the same problem