MEE3025 MECHANISMS
Explanations on Term Project
1) Draw kinematic chain of your mechanism.
2) Find degree of freedom of the mechanism.
3) Show position parameters on the mechanism. Classify them as constants and variables.
Write the values of constant parameters.
Stepwise Solution by EXCEL
4) Write trigonometric relations/loop equations and determine the input variable(s) proper for
stepwise solution.
5) Take time derivatives of position equations to obtain velocity equations.
6) Take time derivatives of velocity equations to obtain acceleration equations.
7) Run EXCEL program to obtain unknown variables throughout the working range of the
mechanism. In this program, input position variable(s) is increased in small steps. Input
velocity variable(s) is held constant whereas input acceleration variable(s) is taken to be
zero.
8) Print output of the EXCEL program.
Matrix Solution by MATLAB
9) Write loop equations and applying Newton-Raphson algorithm construct the matrix
equations. Here, input(s) are so selected that the problem cannot be solved without matrix
calculation.
10) Take time derivatives of position equations to obtain velocity equations.
11) Take time derivatives of velocity equations to obtain acceleration equations.
12) Run EXCEL program to obtain unknown variables throughout the working range of the
mechanism. In this program, input position variable(s) is increased in small steps. Input
velocity variable(s) is held constant whereas input acceleration variable(s) is taken to be
zero.
13) Take print-out of your MATLAB program.
14) Print outputs of your MATLAB program. These are in the form of position, velocity and
acceleration graphics showing the change of these variables throughout the working range of
the mechanism.
15) Interpret these graphs.
DEADLINE: December 23, 2015