Error with Articulated four-joints

I need to build this mechanism:

So i create this scheme (removed the initial angle to simplify)

But I get an error

If i disconnect Revolute C from Groud 1 it works and I get the animation with the right movement along the axes.

So i need somehow to lock the end bode BC.

The settings of Revolute C, Body BC and Ground1 below:

Answer 1

[Steve Miller]

Hi Alexander,

The model you have shown above is built using Simscape Multibody 1G technology. You could get it to work if you set the initial angle of all your joints to exactly match the configuration from your sketch. You have calculated one angle, you need to calculate the rest...

HOWEVER, I strongly recommend you try using the current version of Simscape Multibody and the newer technology. There, you only have to connect the parts, specify the one angle you know, and Simscape Multibody will figure out the rest of the angles for you. See this tutorial for an example.

https://www.mathworks.com/help/physmod/sm/ug/model-four-bar.html

--Steve