Concept of Elasticity:
Elasticity is a property of the material to regain the original shape or form after removing deforming force, or load given the elastic limit is not exceeded. There are certain terms utilized in connection with elasticity; stress and strain.
The stress on an elastic material is stated as force exerted on material per unit area. It can also be stated as:
Stress = Force/Area =F/A
Force is estimated in Newton's (N) and area is in meter square (m2) then unit of stress is thus Newton per meter square (Nm-2). If the object has original length of l, when it is stretch or compressed in such a way that it has the extension or compression value of e, then, strain on object is stated as
Strain = Extension produced on the object/ the original length of the object
Strain = e/l
Stress is connected to force producing deformation. Strain is associated to amount of deformation.
Hooke's Law:
Let the helical spring of original length lo. When the weight is joined to it, it will be seen that spring will be stretched through the distance e. By using slotted weight, we can differ force F acting on spring and with the help of the ruler we can compute extension e for each equivalent weight.
When different force (F) are plotted against corresponding extensions (e) estimated, a linear relationship is attained, that is, provided elastic limit is not exceeded. It is on the basis of experiment that British Scientist Robert Hooke formulated law of elasticity that is called as Hooke's law.
Hooke's law defines that force applied on elastic material is directly proportional to extension produced if elastic limit is not exceeded.
F ∝ e
F = -ke
Where k is the constant of proportionality generally referred to as spring constant. K is property of elastic material. Negative sign is to illustrate restoring ability of material. Later a modified form of this law was given. According to which within elastic limit, stress on the elastic material is directly proportional to strain produced in material.
Stress & strain
Stress = M strain
Where M is constant, constant is known as a Modulus of elasticity of the material of the body.
Concept of Elastic Limit:
The maximum stress which can be applied to the metal without creating permanent deformation. When external forces apply on material they tend to form internal stresses inside it that cause deformation. If stresses are not very great material will return to the original shape and dimension when external stress is removed.
Concept of yield point:
Yield point or yield strength of the material is stated as stress at which a material starts to deform plastically. Before yield point the material will deform elastically and will return to the original shape when applied stress is removed. Once yield point is passed, few fraction of deformation will be permanent and non-reversible.
Ductile Substances:
Substances that lengthen significantly and go through plastic deformation until they break are ductile substances. Examples of such substances are Copper (Cu), Lead (Pb), and Wrought Iron (Fe).
Brittle Substance:
When substances break very soon after elastic limit is obtained, then, such substances are called as Brittle. Glass, high carbon steel brass, bronze and other alloys do not have yield point.
Ultimate tensile strength (UTS):
It is frequently shortened to tensile strength (TS) or ultimate strength, is a maximum stress that a material can endure while being stretched or pulled before failing or breaking. Tensile strength is not the similar as compressive strength and values can be fairly different.
Elastic modulus:
Elastic modulus, or modulus of elasticity, is the number which estimate the object or substance's resistance to being deformed elastically (that is, non-permanently) when the force is applied to it. Elastic modulus of the object is stated as slope of its stress-strain curve in elastic deformation region. The stiffer material will have higher elastic modulus.
Tutorsglobe: A way to secure high grade in your curriculum (Online Tutoring)
Expand your confidence, grow study skills and improve your grades.
Since 2009, Tutorsglobe has proactively helped millions of students to get better grades in school, college or university and score well in competitive tests with live, one-on-one online tutoring.
Using an advanced developed tutoring system providing little or no wait time, the students are connected on-demand with a tutor at www.tutorsglobe.com. Students work one-on-one, in real-time with a tutor, communicating and studying using a virtual whiteboard technology. Scientific and mathematical notation, symbols, geometric figures, graphing and freehand drawing can be rendered quickly and easily in the advanced whiteboard.
Free to know our price and packages for online physics tutoring. Chat with us or submit request at [email protected]
Get in touch with our professional Microbial Ecology Assignment Help tutors and make your academic life stress-free at rational prices.
Theory and lecture notes of Matrices and Determinants all along with the key concepts of Definition of Matrix, Determinant of a Square Matrix, Matrix Operations, Inverse of a Square Matrix, Applications of Determinants and Matrices. Tutorsglobe offers homework help, assignment help and tutor’s assistance on Matrices and Determinants.
radioactivity and binding energy of nuclei tutorial all along with the key concepts of properties of nucleus, binding energy per nucleon, mass defect, nuclear stability, radioactive decay law, half-life, radioactive series, accelerators and detectors
Manipulating Insect Behavior Behavioral Manipulation Methods, Examples of Behavioral Manipulation Methods, Stimuli that Act Over Long Distances, Stimuli Acting at Close Distance, Deterrents and Attractants Stimulants
www.tutorsglobe.com assignment help tutorials, describe various operation research models, principles of modeling and simplifications of or models.
tutorsglobe.com true cost-of-living adjustments assignment help-homework help by online cost-of-living adjustments tutors
Statistical Treatment of Data tutorial all along with the key concepts of Definitions of various Statistical Terms, Ways of Expressing Precision, Average Deviation, Variance, Standard Deviation, Standard Deviation of Mean, Student t-Test and F-test
tutorsglobe.com events of meiosis assignment help-homework help by online meiosis tutors
Avail top-rated Multivariable Calculus Assignment Help to meet up high expectations of your professors and secure A++ at feasible prices.
Nutrient resources and limitations tutorial all along with the key concepts of Sources of Nutrients, Nutrient Limitations, Cycling of minerals and nutrient pool, Characteristics of Biogeochemical Cycles, Phosphorus Cycle, Sulphur Cycle, Carbon Cycle and Nitrogen Cycle
Electric charge-Force and Field tutorial all along with the key concepts of Introduction to Electric charge, Types of charge, Conservation of Charge, Quantization of charge, Coulomb's law, Principle of superposition, Electric Field and Field lines
tutorsglobe.com government spending assignment help-homework help by online simple theory of income determination tutors
Phylum Mollusca tutorial all along with the key concepts of Characteristic of Phylum Mollusca, Categorization of Phylum Mollusca, Snails and Adaptation of Gastropoda
Colorimetry tutorial all along with the key concepts of Principle of Colorimetry, Colorimetric determinations, Mode of operation, and Colorimetric determination of manganese in steel
tutorsglobe.com gluconeogenesis assignment help-homework help by online glycogen tutors
1942491
Questions Asked
3689
Tutors
1475331
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!