Strength of Materials (SOM)


UNIT  I           Deformation of Solids

Introduction to Rigid and Deformable bodies – properties, Stresses –  Tensile, Compressive and Shear, Deformation of simple and compound bars under axial load – Thermal stress – Elastic constants – Volumetric Strain, Strain energy and unit strain energy

UNIT  II         Torsion

Introduction – Torsion of Solid and hollow circular bars – Shear stress distribution – Stepped shaft – Twist and torsion stiffness – Compound shafts – Springs – types – helical springs – shear stress and deflection in springs – Wahl Factor.

UNIT  III       Beams

Types : Beams , Supports and Loads – Shear force and Bending Moment  – Cantilever, Simply supported and Overhanging beams – Stresses in beams – Theory of simple bending – Shear stresses in beams – Evaluation of  ‘I’ , ‘C’ & ‘T’ sections.

UNIT  IV        Deflection of Beams

Introduction – Evaluation of beam deflection and slope: Macaulay Method and Moment-area Method

UNIT  V          Analysis of stresses in two dimensions

Biaxial state of stresses – Thin cylindrical and spherical shells – Deformation in thin cylindrical and spherical shells – Principal planes and stresses – Mohr’s circle for biaxial stresses – Maximum shear stress – Strain energy in bending and torsion.




  1. A Text Book of Strength of Materials, R.K. Bansal., Lakshmi Publications Pvt. Limited, New Delhi, 1996
  2. Prabhu, T.J., Design of machine elements, Private Publication, 1999
  3. Ferdinand P.Beer, and Rusell Johnston, E., Mechanics of Materials, SI Metric Edition, McGraw Hill, 1992


  1. Popov E.P, “Engineering Mechanics of Solids”, Prentice-Hall of India, New Delhi, 1997.
  2. Beer F. P. and Johnson R, “Mechanics of Materials”, McGraw-Hill Book Co, Third Edition, 2002.
  3. Nash W.A, “Theory and problems in Strength of Materials”, Schaum Outline Series, McGraw-Hill Book Co, New York, 1995
  1. Kazimi S.M.A, “Solid Mechanics”, Tata McGraw-Hill Publishing Co, New Delhi, 1981
  2. Ryder G.H, “Strength of Materials”, Macmillan India Ltd., Third Edition, 2002
  3. Ray Hulse, Keith Sherwin & Jack Cain, “Solid Mechanics”, Palgrave ANE Books, 2004.
  4. Singh D.K “Mechanics of Solids” Pearson Education 2002.
  1. Timoshenko S.P, “Elements of Strength of Materials”, Tata McGraw-Hill, New Delhi 1997.



Notes for the above syllabus is in the link below. Download Strength of materials notes, text books for free:

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