Department of Mechanical Engineering (Statics & dynamics) LAB ...

Department of Mechanical Engineering University of Engineering & Technology Lahore(KSK Campus).

(Statics & dynamics) LAB DATA

Lab Incharge: Engr. Muhammad Amjad Lab Assistant: Abbas Ali

Lay-Out of Engineering Mechanics Lab DOOR # 1

White Board

DOOR # 2

1

2

29

3

32

28

4

5

27

6

26 31

7 9

10

24

25

11 23

12

13 30

14

16

15

17

22

18

19

21

20

Description of lab lay-out 1. Fly wheel

17.Moment of Inertia

2. Linear and angular speed

18.Warm and Warm wheel

3. Governor’s apparatus

19.Clutch Friction

4. Static and Dynamics Balancing Materials

20.Friction of Belt

5. Cam and Follower 6. Toggle Joint 7. Funicular polygon of forces 8. Friction Machine 9. Balancing Machine 10.Crank and Slotted Lever Mechanism 11.Four Bar Chain 12.Ackerman Steering 13.Slotted Link Mechanism 14.Slider Crank Chain 15.Whitworth Quick Return 16.Duplex Screw Jack

21.Gear Train 22.Epicyclic Gear Train 23.Piston Crank 24.Co-efficient of Friction 25.Friction on Horizontal & Inclined Plane 26.Portal Frame 27.Redundant Truss 28.Roof Truss 29.Force Triangle 30.Screw Efficiency 31.Helical Gear 32.Wheel and Axle

Objective of the Lab The objective of the lab is to perform experiments which are related to engineering mechanics subject (Statics and Dynamics) in order to understand the behavior of different mechanical equipments which students study in theory.

Moment of inertia Objective: To investigate the effects of mass, distribution, radius of gyration and acceleration on the moment of inertia. 1. To show that as the disc mass varies so does the acceleration. 2. To determine the radius of gyration of the two arm boss unit. 3. To determine the effective radius of gyration of inertia. 4. To show that if the mass is kept constant but its distribution varies then the acceleration caries.

Toggle joint Objective: The purpose of this experiment is to compare the results with the theoretical values given by a velocity diagram and to study the variation in the mechanical advantage as the angle of the toggle bars changes.

Roof truss Objective: Experimentally measure the forces in a loaded frame and then compare them with values calculated from theory.

Redundant truss Objective: To measure the forces in a truss before & after redundant member is present.

Fly wheel Objective: To determine the moment of inertia of the fly wheel the friction and windage and the time taken to come rest.

Portal frame Objective: To analyses a given loading arrangement on portal frames and compares the results.

Cam & follower Objective: 1. (a). performance of a tangent cam and roller follower. (b). comparison of a roller follower and lever roller follower on a tangent cam. 2. Comparison of a range of follower on an eccentric circular cam. 3. (a). comparison of S.H.M and constant acceleration cams with a roller follower. (b). study of uniform motion cam with a roller follower.

Force triangle Objective: 1. To show that a system of co-planer force when in equilibrium have a closed vector diagram. 2. The resolution of forces and vector force diagram are often used in engineering to find a solution may be difficult or complex due to the geometry involved.

Linear & Angular Speed Objective: To verify the relationship between angular and linear velocity.

Funicular Polygon Of Forces Objective: 1. To resolve by experiment any suitable combination of three static, co-planer forces and to compare the results with the graphical solution obtained by drawing a triangle of force diagram. 2. To study the equilibrium of more than three concurrent co-planer forces and the associated polygon of forces. 3. To study of equilibrium of co-planer nonconcurrent forces acting on a body.

Coefficient of Friction Objective: To determine the kinetic coefficient of friction between various metal pairs.

Slider Crank Mechanism Objective: 1. To obtain a graph of piston velocity against crank angle using the method of instantaneous centers assuming that the crank rotates with constant angular velocity. 2. To obtain the crank angles which correspond to the maximum piston velocity. 3. To show that for a slider crank chain the piston motion tends to simple harmonic motion with increasing values of connecting rod\crank

Ackerman Steering Objective: To measure wheel angles and steering arm position and to determine the turning centre. The effect of toe-out and toe-in of the may also be shown.

Whitworth Quick Return Motion Objective: To investigate the performance of a whit worth quick return motion. In particular the experiment will show that the motion does have quick return stroke and slow cutting or forward stroke.

Slotted Link Mechanism Objective: To investigate the motion of slotted link and to see if piston rod moves with S.H.M.

Four Bar Chain Objective: 1. To find the cognate linkage. 2. To investigate a four bar linkage. 3. To determine the velocities of the rocker.

Crank And Slotted Link Mechanism Objective: To investigate the kinematics motion of a crank and slotted lever quick return mechanism and evaluate the increase in efficiency that this would offer if applied to a machine tool.