JNTUH B.Tech 2nd year Elements of Mechanical Engineering gives you detail Elements of Mechanical Engineering R13 year subject. It will be help full you to understand you complete curriculum of the year.
Objective
To give an insight to students about the behaviour of materials under external forces. The concept of stress, strain, elasticity etc. as applied to various structures under loading are included.
UNIT-I
Stresses and strains: kinds of – stress-strains, elasticity and plasticity, Hooks law, stress –strain diagrams, modules of elasticity, Poisson’s ratio, linear and volumetric strain, relation between E, N, and K, bars of uniform strength, compound bars and temperature stresses.
UNIT-II
Types of supports – loads – Shear force and bending moment for cantilever and simply supported beams without overhanging for all types of loads. Theory of simple bending, simple bending formula, Distribution of Flexural and Shear stress in Beam section – Shear stress formula – Shear stress distribution for some standard sections.
UNIT-III
Thin cylindrical shells: stress in cylindrical shells due to internal pressures, circumferential stress, longitudinal stress, design of thin cylindrical shells, spherical shells, change in dimension of the shell due to internal pressure, change in volume of the shell due to internal pressure Thick Cylinders : Lame’s equation- cylinders subjected to inside and outside pressures Columns and Struts.
Text Books
- ”Strength of Materials and Mechanics of Structures”, B.C.Punmia, Standard Publications and distributions, 9 th ed. (units I – III)
- Thermal Engineering, Ballaney,P.L., Khanna Publishers, 2003 (Units IV.
- Theory of Machines , S.S. Rattan , Tata McGraw Hill (Units V).
Outcome
The student would be exposed to basic mechanical engineering machinery.
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