MD2 (B-TECH Mechanical Engineering 6th)

Unit I Design for Production ; Erogonomic and value engineering considerations in design,

Role of processing in design, Design considerations for casting, forging and machining.

Variable Loading : Different types of fluctuating/ variable stresses, Fatigue strength

considering stress concentration factor, surface factor, size factor, reliability factor etc.,

Fatigue design for finite and infinite life against combined variable stresses using

Goodman and Soderberg’s Criterion, Fatigue design using Miner’s equation, Problems.

Unit II Shafts : Detailed design of shafts for static and dynamic loading, Rigidity and deflection

consideration.

Unit III Springs : Types of Springs, Design for helical springs against tension and their uses,

compression and fluctuating loads, Design of leaf springs, Surging phenomenon in springs,

Design Problem.

Unit IV Bearings : design of pivot and collar bearing , Selection of ball and roller bearing based

on static and dynamic load carrying capacity using load-life relationship, Selection of

Bearings from manufacturer’s catalogue, types of lubrication – Boundary, mixed and

hydrodynamic lubrication, Design of journal bearings using Raimondi and Boyd’s Charts,

Lubricants and their properties, Selection of suitable lubricants, Design Problems.

Unit V Gears : Classification, Selection of gears, Terminology of gears, Force analysis, Selection

of material for gears, Beam & wear strength of gear tooth, Form or Lewis factor for gear

tooth, Dynamic load on gear teeth -Barth equation and Buckingham equation and their

comparison, Design of spur, helical, bevel & worm gear including the Consideration for

maximum power transmitting capacity, Gear Lubrication, Design Problems.