- #1
Rodders
- 3
- 0
Dear community,
I posted this thread in Mathworks Simscape Community two days ago or so. And I have decided to record a video and post all the information in this forum. This is my first time, so hello and thanks for reading!
Last month I was playing around with Simscape Multibody and I realized something. They have a "four bar linkage" preset to simulate its physical behaviour, so I changed a bit the initial positions and I found this:
I have simulated the same mechanism in Autodesk Inventor and It behaves as I expected (as a pendulum). I supposed that the simmetric position in this case should be the equilibrium position, the attractor.
Then, I decided to create a new simulation in Matlab and this very weird situation popped up. But I do not see why, how, where... I mean, It goes far beyond my understanding.
Some data are:
-Connector Link (Yellow bar):
-Density: 1000 kg/m^3
-Volume: 10x2x0.5 cm^3
-Rocker Link (Red bar):
-Density: 100 kg/m^3
-Volume: 25x2x0.5 cm^3
-Crank Link (Blue bar):
-Density: 100 kg/m^3
-Volume: 25x2x0.5 cm^3
Conditions:
-No friction.
-No external foces.
-Just gravitation acting.
-State targets (initial positions): specified in the video. Sorry about the size. Please watch full screen in 1080.
I would appreciate your comments on this issue, please, I really need it...
Thanks again!
I posted this thread in Mathworks Simscape Community two days ago or so. And I have decided to record a video and post all the information in this forum. This is my first time, so hello and thanks for reading!
Last month I was playing around with Simscape Multibody and I realized something. They have a "four bar linkage" preset to simulate its physical behaviour, so I changed a bit the initial positions and I found this:
I have simulated the same mechanism in Autodesk Inventor and It behaves as I expected (as a pendulum). I supposed that the simmetric position in this case should be the equilibrium position, the attractor.
Then, I decided to create a new simulation in Matlab and this very weird situation popped up. But I do not see why, how, where... I mean, It goes far beyond my understanding.
Some data are:
-Connector Link (Yellow bar):
-Density: 1000 kg/m^3
-Volume: 10x2x0.5 cm^3
-Rocker Link (Red bar):
-Density: 100 kg/m^3
-Volume: 25x2x0.5 cm^3
-Crank Link (Blue bar):
-Density: 100 kg/m^3
-Volume: 25x2x0.5 cm^3
Conditions:
-No friction.
-No external foces.
-Just gravitation acting.
-State targets (initial positions): specified in the video. Sorry about the size. Please watch full screen in 1080.
I would appreciate your comments on this issue, please, I really need it...
Thanks again!