Springs & Properties of materials 2.5 / 5 based on 4 ratings ? PhysicsMaterialsASEdexcel Created by: SarahCreated on: 27-01-15 17:56 Limit of proportionality the point a which behaviour no longer conforms to Hookes Law 1 of 27 Elastic Limit the point at which the spring which no longer return to its original shape when the force is removed 2 of 27 Elasticity the ability to regain shape after deforming forces are removed 3 of 27 Elastic potential energy the energy stored in a body due a load (force) causing deformation 4 of 27 work done is EQUAL to... ..Elastic potential energy 5 of 27 EQUATION: Work done = Force x Distance 6 of 27 EQUATION: EPE = 1/2kx2 7 of 27 tensile stress force per area 8 of 27 tensile strain force per unit of area 9 of 27 EQUATION: strain = Force / Area 10 of 27 tensile stress: extension per unit of length 11 of 27 EQUATION: stress: extension / original 12 of 27 Stiffness how difficult it is to change the shape/size of material. The greater the stiffness the steeper the gradient 13 of 27 Strength ultimate tensile stress of the material before it breaks 14 of 27 toughness measure of the energy needed to break a material. Area under a stress/strain curve 15 of 27 breaking point the point at which a material breaks under their UTS 16 of 27 breaking stress the maximum stress a material can withstand before breaking 17 of 27 ultimate tensile strength the maximum stress a material can withstand before breaking 18 of 27 brittle a material that breaks and shows so plastic deformation - linear graph - e.g. glass 19 of 27 example of brittle material glass 20 of 27 ductile a material that undergoes plastic deformation before breaking - drawn into wires - e.g. copper 21 of 27 example of ductile material copper 22 of 27 elastic limit the point beyond which the material undergoes plastic deformation 23 of 27 limit of proportionality the point at which a material no longer conforms to Hooke's Law 24 of 27 plastic deformation permanent deformation after the force is removed 25 of 27 restoring force the force exerted by the spring in the opposite force to the deforming force 26 of 27 yield point the point at which there is a large increase in extension for a small increase in force 27 of 27
Materials - Hooke's Law and Elasticity - smartphone physics 5.0 / 5 based on 1 rating Teacher recommended
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