Probably a rather trivial question regarding the modelling of 1D mechanics. How to model the fall of a ball onto an elastic substrate and its reflection. What “constrain” needs to be assumed. The problem is that I can do this with a velocity constraint. However, when I model the distance from which the weight is supposed to fall, the spring immediately pulls out, and I want the beginning to be a free fall.
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No problem! Yes, the orientation can be somewhat challenging at first. Glad you've got the hang of if now and have your model working!
This helped a lot. Mainly due to right axis orientation :). This is not very clearly shown in the manual
Thaks a lot this is great help
Hi Piotr,
Here is description of my model.
See the attached printed pdf report of the model for more information on this model.
The online help is also a great place to get more information regarding the parameters of an element.
This is exactly what I am doing without success. Could you write numbers in the table allowing to receive this result?
Hi Piotr,
Thank you for your question! The recommended approach for 1D modeling of contacts between bodies is to use an end-stop element from the 1D mechanics library. These elements apply contact forces at a specified distance from the zero position of the mass, and are used to model the contact of a moving body with either a moving surface (End Stop) or a fixed surface (End Stop against Absolute).
The elasticity of the substrate is modeled by choosing the 'elastic end stop' for the mode parameter within the element. The correct stiffness and damping properties for the material can then be added.
Let me know if you have any further questions!