13 CommentsOldest to Newest
Dear Guy Rouleau,
I want apply motion to revolution joint that include angular, angular velocity, angular acceleration. It easy with 1st generation so I can not do this with second generation. In second generation, it only accept input angular and it calculation angular velocity, angular acceleration by itself. So the results do not same with mine.
So, how to I input angular, angular velocity, angular acceleration to revolution joint in second generation?
I want to apply force on the point of body, this position of point change according to time. How can I import the position of that point?
To specify position, velocity and acceleration, you can open the dialog for the S->PS block. In the “Input Handling” tab, select “Provide Input Derivatives” and “Provide First and Second Derivative”. That way, the S-> PS block will have 3 ports for your 3 signals.
Thank you very much, Guy Rouleau!
Dear Guy Rouleau,
I have problem with set up the initial angle of revolution. When I change the “value” of “specify position” in “State Target”, it not change anything with the same input angle data. How can I set up the initial angle of revolution? And the initial angle was calculated by what are frames between?
Thank you in advanced!
My model is imported from Creo 2.0
Hi Guy Rouleau,
Is there any way to input external motion, similar to the “Indirect Inverse Dynamics… plus external forces” section, but with motion instead of forces? I am trying to leave a joint to automatically compute its state for most of the simulation, but at a few (triggered) instants, I want to have direct control over the angular velocity of the joint (instead of messing around with forces and torques). What’s the best way to do this?
Hi Guy Rouleau,
Thanks for the great work done and the detailed example and explanation!
I have a question that since it was mentioned of “internal friction” in the description. However, it was not elaborated in the description. Could you give some suggestions on the realization of the friction?
Thank you in advance!!!
Can you help me with the following problem?
I have a platform which is connected to the ground using a spherical (S), a prismatic (P) and a rotary (R) joints. There are 3 such legs as shown in the attached image
attached. Only the P joints are actuated. Also I know the position of the P joints at every instant of time. For eg: at time t1, P1=1m, p2=1.2m and P3=1.5m etc. The idea is to move and orient the top platform according to some predefined path by varying the length of the P joins. How can I provide inputs to P joints in Simmechanics to achieve this? I have prepared a CAD model in SolidWorks and using it made a Simmechanics model also.
Hello Guy Rouleau
My system consists of a motorized arm which opens a shutter. My problem: I don’t know how to impose to it an initial position of the beginning of movement. At present it starts from inside of the wall …
If you have a solution I would be most grateful to you for this.
Thank you for all.
In fact I did it directly in Autodesk Inventor. It’s more simple.
Thanks for your work.
Hello i don’t know that how can i combine 2 part and how did you make this bodies?
I generated a SimMechanics model from the model inventor of a real manipulator arm. I would like to add torque at the actuations, how proceed?
I would like to input angular velocity to revolute joint. But when i select provide 1st derivative of S-PS block it gives me error.Kindly i will be really very happy if you post certain example in which angular velocity is taken as input