Unit 1 stress and straintopics covered lecture 1 introduction, state of plane stress lecture 2 principle stresses and strains lecture 3 mohrs stress circle and theory of failure lecture 4 3d stress and strain, equilibrium equations and impact loading lecture 5 generalized hooks law and. Principal stresses, principal strains and principal axes, calculation of principal stresses from principal strains. A particular form of elasticity which applies to a large range of engineering. Plane stress and plane strain, simple problems in cartesian and polar coordinates, moduleii hours solution of axisymmetric problems, bending of beams and plates, kirkhhof and mindlin.
Am2540 strength of materials laboratory course material, iit madras. Lecture notes, lecture 1 introduction lecture notes, lecture 6 force system resultants lecture notes. Subject strength of materials topic simple stress and strain lecture 1 faculty venugopal sharma gate academy plus is an effort to initiate free online digital resources for the first. A beam is a member subjected to loads applied transverse to the long dimension, causing the member to bend. Nominal stress strain or conventional stress strain diagrams. The operation, including the mohrs strain circle, is very. One of our principal concerns in this course is material behavior strength. Ce6306 som notes, strength of materials lecture notes.
Strength of materials simple stress and strain youtube. Stresses, however, cannot be directly measured, but stain is measurable and can be directly related to stress. The topics that are covered in this pdf containing strength of materials som previous year gate solved questions are. It is the deformation produced in the material due to simple stress. Lecture 2 numerical problems on stress, shear stress in axially loaded members. Anna university regulation 20 mech ce6306 som notes for all 5 units and mech 3rd sem ce6306 strength of materials lecture notes are listed down for students to make perfect. Know how to compute strains and stresses of members.
Syllabus introduction, stress, strain, mechanical properties of materials, linear elasticity, hookes law and poissons ratio, stress strain relation behaviour in tension for mild steel, cast iron and non ferrous metals. Lecture notes mechanics and materials ii mechanical. Theory of simple bending bending stress distribution load carrying capacity. Elastic materials hookes law a material is said to be elastic if it returns to its original, unloaded dimensions when load is removed. In engineering it is more convenient to measured as the force n per square mm. Definition of stress, stress tensor, normal and shear stresses in axially loaded members. Appendix a lists numerous material properties for typical. Mechanical properties of metals outline introduction concepts of stress and strain elastic deformation stress strain behavior elastic properties of materials plastic deformation yield and yield strength ductility resilience toughness concepts of stress and strain. It usually represents the displacement between particles in the body relative to a reference length. Strain can also be rotated to find its principal strain, principal strain direction, and maximum shear strain. In this region, the material obeys the hookes proportional limit law.
Concepts of stress and strain one of our principal concerns in this course is material behavior strength. Apr 02, 2020 elasticity, stress and strain and st ressstrain curve, class 11, physics edurev notes is made by best teachers of class 11. This document is highly rated by class 11 students and has been viewed 15834 times. Then, if we were to plot stress vs strain, we find. The above equation is a simple linear model for the 1d analysis of materials operating in the elastic region of behavior. Understanding stress there is a fundamental difference both conceptually and. The material will not return to original shape if the applied stress is more than e. Still, the body regains its original dimension, once we remove the load. Concepts of stress and strain university of arizona.
We then develop a set of stress strain equations for a. For any state of stress, we can find a set of planes on which only normal stresses act and the shearing stresses are zero. Determination of the stress distribution within a member. Frequency sweep at various strain stress amplitudes within linear regime study non. Stress and strain theory at a glance for ies, gate, psu 1. In the region from a to c stress and strain are not proportional.
In our derivations that follow, we limit our attention to two dimensions. But strength models are often intimately related to stress. Strain, stress, deflections the beam, or flexural member, is frequently encountered in structures and machines, and its elementary stress analysis constitutes one of the more interesting facets of mechanics of materials. Strength of material som notes free pdf download strength of material notes by prof. Stress and strain notes for gate,ese and psu exams. Stress strain relationship, hookes law, poissons ratio, shear stress. Hi students today explain about strength of materials simple stress and strain in telugu. If we require a 3d analysis of materials, we must use a more. A centric load is one in which the resultant force passes through the centroid of. Introduction free body diagram revisited normal, shear and bearing stress stress on inclined planes under axial loading strain mechanical properties of materials true. Lecture notes on applied elasticity and plasticity prepared by dr pramod kumar parida. Zavatsky ht08 lecture 6 mohrs circle for plane stress transformation equations for plane stress. Mechanics of materials 10me34 compiled by hareesha n g, asst prof, dsce page 2 unit 1.
The notes that follow come from several sources and i have tried to eliminate the errors when i find them. Strength of materials1 note pdf download lecturenotes. Mechanics of solids pdf notes mos pdf notes smartzworld. The above geometrical data the strains will be multiplied by material properties to define a new physical. Elasticity, stress and strain and stressstrain curve. Tech 5th sem lecture notes on structural design bce301. The elastic modulus is also the slope of the curve. Stress and strain, stress strain relationship and elastic constants, mohrs circle for plane stress and plane strain, thin cylinders, shear force and bending moment diagrams.
This gives the common engineering unit of stress, mpa. Pdf ce6306 strength of materials som books, lecture. The basic unit of stress is the pascal pa which is newton per square metre. This notes are best for strength of material subject. Stress and strain study notes for mechanical engineering. Here you can download the free lecture notes of mechanics of solids pdf notes mos pdf notes materials with multiple file links to download. Stress strain relationships simple uniaxial stress situation biaxial stress situation. Dapem fmpi cu 2006 2 contents preface anelastic materials linear elastic body linear viscous body stress strain and strain stress relations in viscoelastic medium conversion of the convolutory stress strain relation into a differential form rules for linear rheological models. Simple stress and strains, strain energy introduction to mechanics of materials strength of materials or mechanics of materials is a branch of applied mechanics that deals with the behaviour of deformable solid bodies subjected to various types of loadings. We first construct a set of strain measures in terms of the x,y and z components of displacement at a point.
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