CE8395 STRENGTH OF MATERIALS FOR MECHANICAL ENGINEERS L T P C 3 0 0 3
OBJECTIVES:
To understand the concepts of stress, strain, principal stresses and principal planes. To study the concept of shearing force and bending moment due to external loads in determinate beams and their effect on stresses. To determine stresses and deformation in circular shafts and helical spring due to torsion. To compute slopes and deflections in determinate beams by various methods. To study the stresses and deformations induced in thin and thick shells.UNIT I STRESS, STRAIN AND DEFORMATION OF SOLIDS 9
Rigid bodies and deformable solids – Tension, Compression and Shear Stresses – Deformation of simple and compound bars – Thermal stresses – Elastic constants – Volumetric strains –Stresses on inclined planes – principal stresses and principal planes – Mohr’s circle of stress.UNIT II TRANSVERSE LOADING ON BEAMS AND STRESSES IN BEAM 9
Beams – types transverse loading on beams – Shear force and bending moment in beams – Cantilevers – Simply supported beams and over – hanging beams. Theory of simple bending– bending stress distribution – Load carrying capacity – Proportioning of sections – Flitched beams – Shear stress distribution.UNIT III TORSION 9
Torsion formulation stresses and deformation in circular and hollows shafts – Stepped shafts– Deflection in shafts fixed at the both ends – Stresses in helical springs – Deflection of helical springs, carriage springs.UNIT IV DEFLECTION OF BEAMS 9
Double Integration method – Macaulay’s method – Area moment method for computation of slopes and deflections in beams - Conjugate beam and strain energy – Maxwell’s reciprocal theorems.UNIT V THIN CYLINDERS, SPHERES AND THICK CYLINDERS 9
Stresses in thin cylindrical shell due to internal pressure circumferential and longitudinal stresses and deformation in thin and thick cylinders – spherical shells subjected to internal pressure – Deformation in spherical shells – Lame’s theorem.TOTAL: 45 PERIODS
OUTCOMES
Students will be able to Understand the concepts of stress and strain in simple and compound bars, the importance of principal stresses and principal planes. Understand the load transferring mechanism in beams and stress distribution due to shearing force and bending moment. Apply basic equation of simple torsion in designing of shafts and helical spring Calculate the slope and deflection in beams using different methods. Analyze and design thin and thick shells for the applied internal and external pressures.TEXT BOOKS:
1. Bansal, R.K., "Strength of Materials", Laxmi Publications (P) Ltd., 20162. Jindal U.C., "Strength of Materials", Asian Books Pvt. Ltd., New Delhi, 2009
REFERENCES:
1. Egor. P.Popov “Engineering Mechanics of Solids” Prentice Hall of India, New Delhi, 20022. Ferdinand P. Been, Russell Johnson, J.r. and John J. Dewole "Mechanics of Materials", Tata McGraw Hill Publishing ‘co. Ltd., New Delhi, 2005.
3. Hibbeler, R.C., "Mechanics of Materials", Pearson Education, Low Price Edition, 2013
4. Subramanian R., "Strength of Materials", Oxford University Press, Oxford Higher Education Series, 2010.
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