deformation of solids Flashcards
state Hooke’s law
The extension of a body is directly proportional to the applied force up to the limit of proportionality
what is the force constant (F)
the force per unit extension up to the limit of proportionality
when is a material said to be elastic
a material is said to be elastic when it regains its original dimensions when the deforming force is removed
what is plastic deformation
plastic deformation is when a material does not fully return to its original dimensions when the deforming force is removed
what is the Young’s modulus of a material
the resistance of a material to deformation that is independent of thickness or length
what is stress
the force per unit area
what is strain
The ratio change in length to its original length
what is strain energy
the energy stored in a body due to its change of shape
what is the formula for young’s modulus
STRESS
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STRAIN
the formula for strain energy when stored in a deformed material
ES=1/2 Fx=1/2 kx^2
what is strain energy equal to
work done
