motion environment problems 1

[supateach2004]

Could some one please take a look at the images in the link and help me with my motion environment problems. I am modeling a rear suspension system and have almost finished the final assembly, I only have the shocks to add - see lower image. I want to animate the suspension movement, so I started with just one joint to make it easier, or so I thought! see upper image. I cant get it to work at all, it either does some random movement or I get an error. I have tried going through the intellimotion builder and through the side bar. This is, however the first time I have used motion other than the tutorials.The rod end is made of a sphere with a hole, point aligned inside the rod end outer. The hole in the sphere is axial aligned onto the mounting bolt and offset planer aligned fron the vertical mounting bracket. Could someone guide me though how to get this first joint to move then I can tackle the whole suspension system later.
Thanks in anticipation
Tony

http://www.justkellie.com/Site/Prob01.htm

 

[fwc]

- The joint created in this example will be a Sphere Joint.
- Joints that automatically created by relationships in the Assembly Environment will not be used in this example. (You’ll have to suppress them manually).
- Answer NO when asked for automatically add new parts as grounded or moving parts. Try manually setting the Rod End Outer to Moving Parts and the rest to Ground Part.


1. From the IntelliMotion Browser (sidebar) right click the Rod End Outer (should be under the Moving Parts Node), from the pop-up menu, select “Add Constraint”, and then select “Spherical Joint”.
2. A dialog (Edit User–Defined Joint) will appear.
a) Under the Definition Tab,
1. For the 1st component, select Rod End Outer.
2. For the 2nd component, select the Sphere.
3. For the Location, you can select the Sphere or the Rod End Outer. Try selecting other location to see different effect.
4. For the Direction, choose any entity that determines the joint direction.
b) Under the Properties Tab,
1. Increase the number in the scale box; you’ll notice that the Joint symbol size will increase. It’s much easier to notice the changes made in steps 2.a with a larger symbol.
c) Under the Motion Tab,
1. Select “Rotate X” from “Motion On” combo box.
2. Select “Displacement” from “Motion Type” combo box.
3. Select “Harmonic” from “Function” combo box.
4. Key in a number in the Amplitude Text Box. Try with a smaller number first, < 10.
5. Key in a number in the Frequency Tex Box. Try with a larger number, > 1000.
6. You can run the simulation w/o having to key in the rest of the text box.
7. Repeat ii to v for Y and Z.
3. Now run the simulation.

Hope this will give you something to start with.