Page 52 - BE Mech Curriculum and Syllabus - R2017 - REC

Department of MECH | REC

SEMESTER V

L T P C
ME17501 DESIGN OF MACHINE ELEMENTS
2 2 0 3

OBJECTIVES:
 To get knowledge in various steps involved in the Design Process
 To understand the principals involved in evaluating the shape and dimensions of a component to
satisfy functional and strength requirements.
 To learn to use standard practices and standard data of machine design
 To learn to use catalogues and standard machine components
 To know the integrated design procedure of different machine elements for mechanical applications.

UNIT I STEADY STRESSES AND VARIABLE STRESSES IN MACHINE MEMBERS 12
Introduction to the design process - factors influencing machine design, design consideration- standards and
codes - selection of materials based on mechanical properties - Preferred numbers, fits and tolerances –
Direct, Bending and torsional stress equations – Impact and shock loading – calculation of principle stresses
for various load combinations, eccentric loading – curved beams – crane hook and ‘C’ frame- Factor of
safety - theories of failure – Design based on strength and stiffness – stress concentration – Design for
variable loading.

UNIT II SHAFTS AND COUPLINGS 12
Design of solid and hollow Shaft –For Static and Varying Loads, For Strength and Rigidity-Design of
Coupling-Types, Flange, Muff and Flexible Rubber Bushed Coupling– Keys, keyways and splines - Rigid
and flexible couplings.

UNIT III TEMPORARY AND PERMANENT JOINT 12
Threaded fastners -Design of Bolts under Static Load, Design of Bolt with Tightening/Initial Stress, Design
of Bolts subjected to Fatigue –Design of Riveted Joints and Welded Joints for structures- theory of bonded
joints.

UNIT IV ENERGY STORING ELEMENTS AND ENGINE COMPONENTS 12
Design of Helical Spring-leaf spring-Types, Materials,Static and Variable Loads. optimization of helical ,leaf
springs - rubber springs – Design of Connecting Rods , crank shafts and piston.

UNIT V BEARING 12
Selection of Sliding contact and rolling contact bearings –- Antifriction Bearing-Types, Life of Bearing,
Reliability Consideration -, McKee’s Eqn., Sommerfield Number, Raimondi & Boyd - Design of
hydrodynamic journal bearings- sliding contact and rolling contact bearings
TOTAL: 60 PERIODS
OUTCOMES:
Upon completion of this course the students can able to
 Get familiarized with the design data’s and codes in general practice
 Formulate and analyze stresses and strains in machine elements and structures subjected to various
loads.
 Do tolerance analysis and specify appropriate tolerances for machine design applications.
 Analyze and design structural joints
 Get familiarized with standards, safety, reliability, importance of dimensional parameters and
manufacturing aspects in mechanical design
TEXT BOOK:
1. Bhandari V, “Design of Machine Elements”, 4 Edition, McGraw-Hill Book Co, 2016.
th
2. Joseph Shigley, Charles Mischke, Richard Budynas and Keith Nisbett “Mechanical Engineering
th
Design”, 10 Edition, McGraw-Hill, 2014.
Curriculum and Syllabus | B.E. Mechanical Engineering | R2017 Page 52