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Introduction to Strength of Materials

Introduction to Strength of Materials. Lecturer; MOHD FIRASATH ALI. Content of the course. ¢ Simple Stress and Strain. ¢ Shear Force and Bending Moment Diagrams in Statically Determinate Beams. ¢ Stresses in Beams. ¢ Torsion. 2. Statics. Engineering Mechanics. Dynamics.

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Introduction to Strength of Materials

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  1. Introduction to Strength of Materials Lecturer; MOHD FIRASATH ALI

  2. Content of the course ¢Simple Stress and Strain ¢Shear Force and Bending Moment Diagrams in Statically Determinate Beams ¢Stresses in Beams ¢Torsion 2

  3. Statics Engineering Mechanics Dynamics Mechanics of Materials 3

  4. Study of EXTERNAL effects on Rigid bodies Study of INTERNAL effects and Deformations that are caused by the Applied loads 4

  5. Mechanics of Deformable Bodies Mechanic of Materials Strength of Materials Mechanics of Solids 5

  6. ¢All branches of Engineering deal with physical systems, the component parts of which are to be assigend definite physical sizes, fabricated from some materials! 6

  7. ¢Appropriate sizing is necessary for these parts of safety withstand the imposed forces on them and at an optimal cost. ¢DESIGN! Strenght of Materials I - DAT 7

  8. ¢It is essential to study the behavior of material from the strength and deformation point of view, as well as the characterization of different kinds of forces, which cause different types of stresses in the material. Strenght of Materials I - DAT 8

  9. ¢The subject, which deals with the analytical deformation of the strength, deformation characteristics (stiffness) and stability of different members, is normally designated as the Strength of Materials . Strenght of Materials I - DAT 9

  10. Characteristics of Strength of Materials Strength Stiffness Stability Strenght of Materials I - DAT 10

  11. Historical Aspects ¢Galileo, Leonardo-Da-Vinci, Eraly part of 17 Centry. th ¢ Leonard Euler (1707-1783) developed theory of columns. ¢French investigators like, to name a few Cauchy, Nervier, Poisson, Coulomb, St. Venant and several others. Strenght of Materials I - DAT 11

  12. Specific Objectives It is expected that one should be in a position to understand ¢The classification of different kinds of forces that structural components are subjected to. ¢Effects of different forces on such components and their solution techniques. ¢Different types of stresses and deformations that develop due to forces Strenght of Materials I - DAT 12

  13. Scope The scope of this particular course includes; ¢Identification of different types of forces that the structural components will be subjected to. ¢Systematic evaluation of the effects of these forces on such structural components. Strenght of Materials I - DAT 13

  14. Approach ¢Mainly confined to material useful to engineering applications. ¢Laws of Newtonian mechanics that govern that govern equilibrium of forces. ¢Essential to know the mechanical characteristics of the materials with which the member will be fabricated. Strenght of Materials I - DAT 14

  15. Units SI units will be used in this particular course. lMeter (m) for length lKilogram (kg) for mass lSecond (s) for time Strenght of Materials I - DAT 15

  16. Derived Units How to derive the units of the following: lArea ? lVelocity ? lAcceleration ? lForce ? Strenght of Materials I - DAT 16

  17. Body forces The body forces act throughout the body and associated with the units of volume of the body, lGravitational force lInertia force lMagnetic force Strenght of Materials I - DAT 17

  18. Surface Forces ¢The surface forces act on the surfaces or area elements of a body Strenght of Materials I - DAT 18

  19. Internal Forces Strenght of Materials I - DAT 19

  20. Internal forces ¢Free body diagrams Strenght of Materials I - DAT 20

  21. Concept of Stress ¢Direction of Stresses ¢Shear Stresses ¢Normal Stresses lTensile lCompression Strenght of Materials I - DAT 21

  22. ¢Stresses multiplied by the respective areas on which they act give us the forces and at section the vector sum of these forces is known as the stress resultant keep a body in equilibrium. Strenght of Materials I - DAT 22

  23. Example 1 Draw Free-Body Diagram Strenght of Materials I - DAT 23

  24. Example 2 Draw Free-Body Diagram Strenght of Materials I - DAT 24

  25. Summery The lessen include: lA general idea about the scope of the subject lTypical application areas lConcept of different forces lConcept of free-body diagram lConcept of Stress Strenght of Materials I - DAT 25

  26. Thank You Strenght of Materials I - DAT 26

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