Revised scheme for B.Tech. - Punjab Technical University

PTU/BOS/ME/101/10-06-2005/BATCH-2003
ME-201 STRENGTH OF MATERIALS – I
Internal Marks: 40 L T P
External Marks: 60 3 1 0
Total Marks: 100
Course Objectives
1. Understand the concept of simple stress and strain.
2. Understand different types of direct stresses and strains.
3. Understand stress- strain diagram. Hookes law, Poisson’s ratio. Young’s
Modulus of Elasticity.
4. Compute simple stresses and strains in bars of uniform and varying sections
subjected to axial loads.
5. Derive relationship between the Elastic Moduli.
6. Compute stresses and strains in compound bars subjected to axial loads and
temperature variations.
7. Compute combined stresses and strains at a point across any plane in a two
dimensional system.
8. Understand the concept of principal planes and principal stresses.
9. Apply graphical and analytical methods to compute principal stresses and strain
and locate principal planes.
10. Derive mathematically the Torsion Equation.
11. Apply the Torsion equation to compute torsional stresses in solid and hollow
shafts.
12. Compute principal stresses and maximum shear stresses in circular shafts
subjected to combined stresses.
13. Analyze stresses in close- coiled helical springs.
14. Analyze stresses in thin shells and spheres subjected to internal pressure.
15. Apply different formulae to analyze stresses in struts and columns subjected to
axial loads.
16. Compute bending moments and shear forces at different sections of determinate
beam structures subjected to different types of loading and sketch their
distribution graphically.
17. Derive mathematically the relationship between the rate of loading, shear force
and bending moment at any section of a beam.
18. Understand the theory of simple bending.
19. Apply the theory of simple bending to compute stresses in beams of
homogenous and composite sections of different shapes.
20. Derive relationship between moment slope and deflection.
21. Use the above relationship and other methods to calculate slope and deflection
in beams.
22. Compute stresses in determine trussed frames and roof trusses.
Detailed Contents
1. Simple stresses and strains : Concept of stress and strain; St. Vernants
principle, stress and strain diagram, Hooke’s law, Young’s modulus, Poisson ratio,
stress at a point, stress and strains in bars subjected to axial loading. Modulus of
elasticity, stress produced in compound bars subject to axial loading.Temperature
stress and strain calculations due to applications of axial loads and variation of
temperature in single and compound bars. Compound stress and strains, the two
dimensional system; stress at a point on a plane, principal stresses and principal
planes; Mohr’s circle of stress; ellipse of stress and their applications. Generalized
Hook's Law, principal stresses related to principal strains