Use this template to prepare your assignment for MIET1077: Mechanics of Machine

**How to use this template:**

Read and follow all the instructions highlighted in yellow colourand delete all highlighted instructions from your final report.

You must fill out all the tables in the report and replace the figures that are given as examples with your own figures/diagrams.

You can draw diagrams on A3 or A4 size paper by hand. However, you need to scan them with proper resolution to use them in your report. Save your final report in PDF file format to submit on the Canvas LMS.

Please see the ‘Assignment Handout’ (available on Canvas) for additional information and suggestions.

The detailed marking rubric is given below:

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**Guidelines for choosing the remaining dimensions of the mechanism:**

*OE = CD= 4OA*

*(OA+AB) < (OE+BE)*

*(OA+OE) < (AB+EB)*

*AC = 3/5 AB*

*H = 1/4 OA*

**Calculations for choosing the dimensions:**

**Find out the X and Y coordinates of all the points at θ2 = 60° and fill out the table below**

Determine all possible positions of links and joints by graphical position analysis. Draw to scale all positions of joints for sixteen subsequent positions of link 2 and determine the limits of motion where appropriate. Identify and outline the paths of each moving joint.

[Write your answer here. Show detailed drawing and calculations with proper labelling and scale information]

Draw to scale all position of joints for 16 subsequent positions of link 2 and determine the path of each moving points. [See Figure below for an example]

**Figure: Position diagram showing 16 points including path of each moving parts ****(Scale: 1 mm = ?? m)**

**Figure: Position diagram for path of each moving parts ****(Scale: 1 mm = ?? m)**

Determine linear and angular velocities by graphical velocity analysis for the given position *q**2 *= 60° of the mechanism, as shown above. Draw to scale the velocity vector diagram encompassing all linear velocities to scale and present the results in a tabular form.

[Write your answer here. Show detailed drawing and show calculations step by step with proper labelling and scale information]

Show the calculations of *V**A**, ω**2**, ω**3**, ω**4**, ω**5* and draw to scale the velocity vector diagram of the mechanism at *θ**2** = 60**°*. [See Figure below for an example]

**Figure: Velocity diagram (****Scale: 1 mm = ?? m/s)**

**Table 4: Results from graphical velocity analysis**

**Show step by step how the Linear velocity (m/s) and Angular velocity**

Determine all linear and angular accelerations by graphical acceleration analysis for the given position *q**2 *= 60° of the mechanism. Draw to scale the acceleration vector diagram encompassing all linear accelerations to scale and present the results in tabular form.

[Write your answer here. Show detailed drawing and calculations with proper labelling and scale information]

Show the calculations of *A**A**, α**2**, α**3**, α**4**, α**5* and draw to scale the velocity vector diagram of the mechanism at *θ**2** = 60**°*. [See Figure below for an example]

**Figure: Velocity diagram ****(Scale: 1 cm = ?? m/s****2****)**

Tabulate the values from Graphical Acceleration Method in Table 5.

**Table 5: Results from graphical acceleration analysis**

Determine all instantaneous centres of velocity for the given mechanism using Kennedy’s rule, and velocities of joints A, B, C and D using identified instantaneous centres. Draw all instantaneous centres and velocities to scale on a separate diagram of the mechanism.

[Write your answer here. Show detailed drawing and calculations with proper labelling and scale information]

Find out all the Instantaneous centres of zero velocity using Kennedys triangle theorem and draw them all. Also draw the diagram to scale using Instantaneous Centre (IC) method at *θ**2** = 60**°*. [See Figure below for an example]

Tabulate the values in Table 6.

**Table 6: Results from graphical velocity analysis (IC method)**

**Answer to question 5:**

Obtain analytic solutions for positions, velocities and accelerations by vector loop equations and complex number notation and present the results in a tabular form. Compare these results with those obtained using the graphical approach. You should have good correlation.

*Analytical position analysis:*

Find the position (X and Y coordinates) of joint *A, B, C, D* and *E* at *θ**2** =60*°. Show the calculations in detail and tabulate the values in Table 7.

**Table 7: Positions from analytical method**

*Analytical ***velocity ***analysis*

Find the velocity of joint *A, B, C *and *D* at *θ**2** =60*°. Show the calculations in detail and tabulate the values in Table 8.

**Table 8: Results from analytical method (velocity)**

*Analytical acceleration analysis*

Find the acceleration of joint *A, B, C *and *D* at *θ**2** =60*°. Show the calculations in detail and tabulate the values in Table 9.

**Table 9: Results from analytical method (acceleration)**

Determine all dynamic forces at the joints for the given position of the mechanism using the analytical matrix method. Assume, for link 2: m2 = 1 kg, CG at OA/2, I2 = 0.002 kgm2; for link 3: m3 = 2.5 kg, CG at b/2 and AB/2, I3 = 0.008 kgm2; for link 4: m4 = 1.5 kg, CG at EB/2, I4 = 0.005 kgm2; for link 5: m5= 1.8 kg, CG at CD/2, I5 = 0.006 kgm2; for slider 6: m6 = 0.9 kg and CG at D.

[Write your answer here. Show detailed drawing and calculations with proper labelling and scale information] [See assignment Handout for figures and formulas]

Derive 14 linear equations and define the Matrix. See an example below:

You can solve the unknown forces and torque using *Matrix solver* or *MS Excel*. You must insert a screenshot of your matrix solution and tabulate the values in Table 10.

**Table 10: Results from dynamic force and torque analysis**

Determine the shaking force, Torque and moment.

[Please see the ‘Assignment Handout’ for sample diagrams and calculations]

**Table 11: Shaking force, torque and moments**

Develop an equivalent computer model capable of simulating the motion of the given mechanism using software Working Model and compute and plot the paths, velocities and accelerations over one revolution of the crank at the given angular velocity w. Also, find the pin forces, slider side loads and driving torque over one revolution. How do the results compare with those obtained using the graphical and analytical approaches?

[Write your answer here. Show detailed drawing and calculations/Screen shot with proper labelling and scale information]

**Computational Method:**

Using the coordinates of *O, A, B, C, D* and *E* from the *graphical* or *analytical* method, create a virtual computer model of the linkage mechanism using Working Model simulation software. Define 16 points for 1 full revolution of joint *A.* Define output for position, velocity and acceleration for Point *A, B, C* and *D*. Take a screen capture of the mechanism as shown in Figure 6 for an example. Run the simulation for 1 revolution. Export data from working Model and plot following diagrams: (a) position (see example Figure), velocity (see example Figure) and acceleration (see example Figure) using Microsoft Excel and tabulate the values in Table 8.

**Part-1: Working Model Simulation for Position, Velocity and Acceleration**

**Figure: Working Model simulation** **for Position, Velocity and Acceleration**

**Table 12: Results from computational method (Velocity and Acceleration) **for θ2 = 60° [after 1 revolution]

**Position diagram:**

Insert the table of exported data from Working model simulation:

**Table 13: Position diagram data**

**Plot a graph in Excel and insert here. See the example below:**

** **

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The post Assignment Template For MIET1077 – Mechanics of Machines, RMIT University appeared first on Singapore Assignment Help.

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