sm structural mechanics first sem

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AR 1.5 STRUCTURAL MECHANICS – I

L/s: 3/Wk Int: 50 End Exam: 50 Total: 100 End Exam: 3 hrs Cr: 3

 Course Overview:

Gives an in-depth understanding of the concepts associated with different Elements of Structures.
Objectives of the Course: To provide knowledge of different forces, force systems, Beams types sectional Properties behavior of different members due to applied forces.
Expected Skills / Knowledge Transferred: Basic principles of mechanics and behavior of elements of structures.

 Course Contents:

 Unit – I Introduction:
 Forces, system of forces, resultant, equilibrant Parallelogram law, Triangle law, Lamis Theorem, polygon law, resultant of coplanar, concurrent force system, couple, characteristics of couple, moment, Equilibrium, Varignon’s Theorem.

 Unit – II
 Analysis of trusses, types of stresses, Loads on trusses, 2-D truss analysis using method of joint (Cantilever & Simply Supported)

Unit – III
 Stress, Strain, type of stresses, stress-strain cure for ductile Material, Hooke’s law, Modulus of Elasticity, Bars of Varying Section, Bars of Composite Section.

Unit – IV
 Shear stress, types of Strain, poissons Ratio, Shear modulus Bulk Modulus Relation between the three Elastic Constants members subjected to 3 mutually perpendicular forces
Unit – V Types of Beams, types of loads, calculation of reactions for simply supported beam (Using Point loads & Udl’s) definition shear force & Bending Moment SFD&
BMD for   Cantilever beams.

Unit – VI
 Shear force & Bending Moment diagrams for simply supported & over hanging beams for point loads & UDL, point contra flexure & its location, Relation between loading, SF & BM
Unit – VII Definition of centroid, line of symmetry ,centroid for some standard shapes, calculation of  centroid for shapes like L,T,C,I Sections etc., moment of inertia, Derivation of M.I formula for Rectangle, circle, Triangle, calculation of   M .I for L,T,C,I Sections  etc.,

Unit VIII 
Types of joints, lap joint & butt joint, failure of riveted joints, strength of the joint, efficiency of joint, Unwins formula, chain riveting & Diamond Riveting

Reference Books

 Khurmi. R.S.Engineering Mechanics, S. Chand and Co. Ltd., New Delhi, 1999. Ramamrutham. S. Engineering Mechanics, 7th ed. Dhanpat Rai Pub. Co. Ltd., Delhi, 2004. Timoshenko. S. and Young, D.H. Engineering Mechanics, McGraw-Hill International Editions

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