ABAQUS Explicit Impact Analysis - Point Mass is not included in calculation of the resulting force 1

[HOLU_]

Dear Members,

I am a self taught ABAQUS Explicit User and if this is a very trivial question I apologize. I want to simulate an Impact of an Impactor (Cylinder) to a Measuring Device consisting of two plates and a spring.

The impactor impacts the measuring device with a defined velocity. Important for the analysis is the mass of the impactor. For this I have assigned a Point Mass in the property-->inertia tool (verfied by Query). But changing the mass from 1kg to 1 ton the resulting contact force does not change so I assume, that the mass is not properly respected.

I am interested in the contact forces on the side of the silicon plate. A pictore of the model is here:

https://files.engineering.com/getfi...8-b7f1-4b281a862f14&file=Impactor_problem.png

Thank you very much

 

[FEA way]

The impactor is deformable so what did you assign the point mass to?

 

[HOLU_]

I created a Reference Point in the middle of the Impactor and assigned the point mass to it. Is it not possible to assign a custom mass to a deformable object or should I change the density in order to have the desired mass? I tried to learn by watching a lot of youtube videos and going through the manual but I no recognize, that it may not be that easy...

 

[FEA way]

Reference point has to be connected somehow to the model. But in this case it shouldn’t be necessary. The easiest way would be to increase the density of the material assigned to the impactor if you want to artificially increase its mass (to higher than resulting from the current volume and material).