I used r6 and r7 vectors along the yellow boom to get from the bottom loops to the top one. I did not show this in the video since those vectors weren't in the loops, but you can use constraints of theta5 = theta6 and theta7 = theta8 to calculate the r6 and r7 vectors.
Hello Did they have only one Solution?? I've solved one of the problem on "Theory of Mechanisms and Machines" book, but my loop wasn't the same on the solution manual is it possible that my solution also right??
Yes, there are many possible correct vector loops. The direction of the arrows and what you name them generally does not matter, as long as the arrows go dot to dot between the joints and the equations match your diagram. See th-cam.com/video/1-HItSmJlc4/w-d-xo.html for more details.
@@dynamicsandkinematics ok, I've already watched this video, and two other examples videos, one of them contains more than one loop and I learned from it how to know how much loops that I need. but I need to be sure that I've got the idea. there are many different unknowns, and the equations I have, just about 2 or three. I cant solve it analytically!! I'm right?.
Most of the time, a mechanism with more than one loop is too complicated to solve analytically and must be done numerically. For a few cases, it is possible though.
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Wonderful explanation
I hope that you will make practical lessons in the analysis using MATLAB
Can i get the Matlab code for the problem? thank you so much
how did you connect top loop to bottom loop ?
I used r6 and r7 vectors along the yellow boom to get from the bottom loops to the top one. I did not show this in the video since those vectors weren't in the loops, but you can use constraints of theta5 = theta6 and theta7 = theta8 to calculate the r6 and r7 vectors.
Hello
Did they have only one Solution??
I've solved one of the problem on "Theory of Mechanisms and Machines" book, but my loop wasn't the same on the solution manual
is it possible that my solution also right??
Yes, there are many possible correct vector loops. The direction of the arrows and what you name them generally does not matter, as long as the arrows go dot to dot between the joints and the equations match your diagram. See th-cam.com/video/1-HItSmJlc4/w-d-xo.html for more details.
@@dynamicsandkinematics ok, I've already watched this video, and two other examples videos, one of them contains more than one loop and I learned from it how to know how much loops that I need. but I need to be sure that I've got the idea.
there are many different unknowns, and the equations I have, just about 2 or three. I cant solve it analytically!! I'm right?.
Most of the time, a mechanism with more than one loop is too complicated to solve analytically and must be done numerically. For a few cases, it is possible though.
@@dynamicsandkinematics
good to hear that, can you confirm if my solution is right pls?
I can't verify correctness without seeing the problem and your solution