We Helped With This Mechanical Engineering Homework: Have A Similar One?

Exam #2

MAE 364: Kinematics & Dynamics of Machines

Take-Home Exam

Due Wednesday, 04/18

                                                                Name:                                                              

I understand that this is a take-home exam and pledge that I have neither discussed the contents with nor received any help from others.  The solutions attached are solely from my personal efforts.

                Signature                                                                                Date:                                      

Summit the followings:

(1)   In-class submission: your derivation of the solution and the plots for the result on paper with this page (pledge signed) as the cover page 

(2)   On-line submission: your Matlab script program.

For the reversed slider-crack linkage shown in the following figure, (a) derive the position, velocity, and acceleration equations ₄,r₄,₄,r&₄,₄,&r&₄ as well as the shake force equations.  Then (b) code a MATLAB script to calculate and plot ₄,r₄,₄,r&₄,₄,&r&₄ as well as the crank torque T₂ and the reaction force on the contact surface of the slider 3 and link 4 for one rotation of the driver crank.

₂  210 rad/s ccw  constant r₁  AC  25 mm r₂  AB  7.6 mm AD  40 mm

                l₂  G₂A 3.8 mm                       

l₄  DG₄  20 mm

m₂  3 kg    I_G2  0.04 kg- m² m₃ 1.3 kg

m₄ 1.54 kg   I_G4  0.012 kg- m²