Specifying wobbling (shaky motion) to a moving and rotating part

[mechdrive1]

Hello everyone,

I am trying to simulate the drilling of an aluminum layer by a screw bit. The tool (screw bit) used is of tool steel alloy and is defined as a rigid body. The aluminum layer is defined as the Eulerian workpiece (in order to eliminate element distortion issues). The tool is provided with a rotational and a translational movement against the fixed aluminum layer. My problem objective is: To specify a wobbling or a shaky motion to the rotating and moving tool against the stationary workpiece. The motive behind providing a wobbling/shaky motion is to simulate the movement of the tool inside the tool holder to check the influence of this wobbling motion on drilling.

Currently, I am specifying the rotational and translational feed using the velocity boundary condition in ABAQUS/explicit. The rotation and linear feed for the tool is along the Z-direction.

I would really appreciate it if you could provide any suggestions or ideas as to how the wobbling motion can be achieved in Abaqus.

Regards,
Ankit

 

[FEA way]

You can use acceleration boundary condition with specified amplitude for this purpose. Check the documentation example "Seismic analysis of a concrete gravity dam" in Abaqus Example Problems Guide.

 

[mechdrive1]

@ FEA way: Thank you for your suggestion. I will go through the example and try to utilize it for my model.