Hello. I am very new user to this amazing stress analysis tool, learning new tricks every day along my work on a 4-bar linkage. As I don’t want to go into details of the linkage application, AND SimScale currently doesn’t provide dynamic simulation nor kinematics (as far as I know), so I am having to do stress analysis per linkage-part, I would like to ask you for a help with setting up boundary conditions of a controll links and upright link.
Imagine, you have ordinary car double-wishbone suspension linkage which is a 4bar linkage. There are two controll links attached to the main frame, which are driving the 3rd link which carries the wheel.
How would you set up boundary conditions for these 3 links in SimScale, if you can stress-analyze them only per-one-part? The two controll links, and the 3rd arm.
In my projects, I set up Rotating motion boundary condition at each pivot of the link with rotation axis vector of unit length. In many cases, my parts seem to be overbuilt (using 7075-T6 alu alloy).
Also: in one of the control links I tried to replace Rotating motion boundary condition with a Fixed support boundary condition at the same faces, and stress-analysis resulted in exactly the same values. Why is that?