Introduction to Mechanical Engineering

Intro to mechanical engineering l.jpg
1 / 25
0
0
976 days ago, 358 views
PowerPoint PPT Presentation
Mech. Eng. Main 10: ASME Survey. Car: High-control lightweight motors, effective mass-manufacturingApollo: Saturn V dispatch vehicle (7.5 million pound push), summon and benefit module, lunar journey modulePower era: Conversion of put away vitality into power, control of substance , active, potential-, and atomic vitality, extensive scale power productionAgriculture automation

Presentation Transcript

Slide 1

Introduction to Mechanical Engineering

Slide 2

Mech. Eng. Best 10: ASME Survey Automobile : High-control lightweight motors, proficient mass-assembling Apollo : Saturn V dispatch vehicle (7.5 million pound push), charge and administration module, lunar trip module Power era : Conversion of put away vitality into power, control of compound , active, potential-, and atomic vitality, huge scale control creation Agriculture motorization : Powered tractors, automated collecting, high-limit water system pumps, electronic harvests administration Airplane : Propulsion (fly motors), lightweight materials, electromechanical control frameworks

Slide 3

Mech. Eng. Best 10: ASME Survey Integrated circuit large scale manufacturing : IC fabricating machines, arrangement frameworks, temperature-and vibration control, engines, direction Air-molding and refrigeration : Compressors, refrigerants, warm exchangers Computer-helped building innovation : Computer-supported outline, investigation, producing, virtual collaboratives Bioengineering : Imaging, prosthetics, insignificantly obtrusive surgery, tissue designing Codes and measures : Interchangeability, interoperability, interconnectivity

Slide 4

Mech. Eng.: Typical Program Thermo-Fluids : Heat exchange, Energy Systems, HVAC, IC Engines Mechanical Systems : Vibrations, Feedback control, Mechatronics, MEMS Design : Composites, Machine Design, FEM Core : Statics, Dynamics, Thermodynamics, Fluid mechanics, Solid mechanics

Slide 5

Types of Motion Linear movement in a straight line (case: prepare on a track) Reciprocating movement direct movement that backpedals and forward (case: pushing a slider-wrench forward and backward, for example, the cylinder in an interior burning motor) Rotary movement round movement (case: the hands of a clock moving, or a wheel on a hub) Oscillating movement roundabout or circular segment movement forward and backward (case: the swing of a pendulum or the turning and arrival of a doorknob)

Slide 6

Machine Components: Basic Elements Gear, rack, pinion, and so forth. Cam and Follower Chain and sprocket Inclined plane wedge Lever Slider-Crank Linkage Springs Wheel/Axle

Slide 7

Inclined Plane Worm Gear Wedge Screw Wood Plane

Slide 8

Lever Piano Scissors Weighing Scale Excavator

Slide 9

Wheel and Axle Waterwheel Turbine Windmill

Slide 10

Belt and Pulley Chain Hoist Crane Elevator

Slide 11

Gears Bevel Gear Spur Gear Helical Gear Rack and Pinion

Slide 12

Cams Cylindrical cam End Cam Oscillating Cam Translating Cam

Slide 13

Springs Leaf Spring Washer Spring

Slide 14

Friction Bearing Brake System

Slide 15

F y θ F x Forces in Structures Forces and Resultants Rectangular Form: F=F x i +F y j Polar Form: F= ׀ F ׀ < θ > F x =Fcos( θ ), F y =Fsin( θ ) ׀ F ׀ = √( F x 2 +F y 2 ), θ =tan - 1 ( F y/F x )

Slide 16

Moment of a Force ―I The snapshot of a drive is a measure of its propensity to turn a protest about some point Moment of compel W about rotate point: W ×d

Slide 17

Moment of a Force ―II Balancing Beams utilizing snapshot of strengths

Slide 18

Equilibrium of Forces & Moments Object in balance

Slide 19

Buoyancy Force delivered by liquid weight When a question is completely or incompletely inundated in a liquid, because of the weight distinction of the liquid between the top and base of the protest, light constrain follows up on the protest making it glide The net upward lightness constrain is equivalent to the extent of the heaviness of liquid uprooted by the body Buoyancy is critical for vessels, boats, inflatables, and aircrafts

Slide 20

Drag Force that opposes the movement of a protest through a liquid Drag compel emerges from the movement of a question through liquid Drag drive emerges from the stream of liquid past a protest A protest traveling through a liquid encounters a compel in course inverse to its movement. Max speed is accomplished when the drag constrain is equivalent in extent yet inverse in heading to the compel driving the question.

Slide 21

Lift strengths emerges as a liquid streams around a structure Lift compel acts opposite to the bearing of stream

Slide 22

Mechanical Energy Gravitational Potential Energy: Energy put away by a question as it additions rise inside a gravitational field Elastic Potential Energy: Energy put away by a protest when it is extended or twisted. Dynamic Energy: Energy related with a question's movement.

Slide 23

Work & Power When a constrain F following up on a protest uproots it by separation d, the drive F is said to have done work W Power is the rate at which work is performed

Slide 24

Newton's Laws of Motion 1 st Law: Every body proceeds in its condition of rest or of uniform movement in a straight line unless it is constrained to change that state by an outer compel 2 nd Law: The rate of progress of energy of a question is corresponding to the constrain following up on the question and is in an indistinguishable bearing from that constrain 3 rd Law: To each activity there is an equivalent and inverse response

Slide 25

Equations of Motion Translational movement Rotational movement

SPONSORS