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_Bd_
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Hi, I have a question for a desing I am working on. I want to model it in excel and I am having a hard time finding out how to transpose some lines: Let Bar B's position and dimensions be known, and I want bar B to be set in 3 positions, I can however apply joints to anyplace near or at bar B, so that I can get a 4-bar-linkage-system that can move as I desire. so for example point A1(x1,y1) and A2(x2,y2) are the joints that are going to hold on to bar B, how do I calculate the new coordinates of A1 and A2 at position 2 if I only know their relationship to bar B at position 1?
I hope this image helps:
http://img526.imageshack.us/img526/4945/thingoz.png
http://img526.imageshack.us/img526/4945/thingoz.png
At position 1 i know everything
At position 2 I only know the coordinates of the bottom bar (the red bar) I know where its two end points are, I know its angle (theta) with the horizontal and I know its lenght.
points A1 and A2 have not changed their position with respect to the bottom bar, but they have moved in the plane, how do I calculate their new position?
thank you!
NOTE: THERE IS ROTATION AND TRANSLATION! (FROM POS 1 to POS 2)
I hope this image helps:
http://img526.imageshack.us/img526/4945/thingoz.png
http://img526.imageshack.us/img526/4945/thingoz.png
At position 1 i know everything
At position 2 I only know the coordinates of the bottom bar (the red bar) I know where its two end points are, I know its angle (theta) with the horizontal and I know its lenght.
points A1 and A2 have not changed their position with respect to the bottom bar, but they have moved in the plane, how do I calculate their new position?
thank you!
NOTE: THERE IS ROTATION AND TRANSLATION! (FROM POS 1 to POS 2)
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