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Stress describes the intensity of loading and is defined by Force/Area. Think of it in terms of, this piece of concrete has a strength of 25N/mm2 ie each mm2 can carry up to 25N of load. Strain is a deformation due to loading and is defined as (change in length)/original length
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How explain the terms stress and strain?
Think of stress as bending or pushing down upon an object, where as strain is more like stretching a rubber-band almost to its limit, or the stress of a bridge holding up.
Find an expression for the energy density in terms of stress and strain?
The expression for the energy density in terms of stress and strain can be expressed as ρe.
What is cgs system of stress and explain terms?
What is the unis of stress in cgs system
Explain why in tensile test the level of the true stress-strain curve is higher than that of engineering stress - stain curve?
see the following questionWhat_the_difference_between_true_strain_and_engineering_strain
Details about stress strain curve?
stress strain curve details
Can stress exists without strain and vice versa. eg a heated bar held rigidly at both ends has no strain but there is stress?
Wherever there is stress there is strain. In the example you noted, if heated bar expands freely without one end constained it changes its strain without stress; that strain is called eigenstrain. If the same bar is held rigidly then the eigenstrain resisted and you get stress and strain. So stress cannot exist without strain; but strain can exist without stress if it is eigenstrain.
What is strain and stress?
stress is load per unit area; when an object is loaded it is under stress and strain and it stretches (strains) until it breaks at its ultimate strength. Stress i srelated to strain in the elastic region by Hooke's law: stress = elastic modulus times strain where modulus is a property of the material and strain is deflection over length
Is the ratio of stress-strain in the region below the proportional limit on the stress-strain curve?
stress is directly proportional to strain up to the proportional limit. Their ratio is young's modulus.
How do you calibrate strain gauges?
The strain gage indicates strain, and the stress is from Hooke's law; stress = modulus times strain so you need to know the modulus of elasticity
What is Secant Modulus?
The secant modulus is the total stress or strain on an object as described by a stress-strain graph. The tangent modulus is the marginal strain.
Which comes first either stress or strain in an object?
When you have stress you also have strain - stress cannot exist without strain, so they come at the same time You can have strain without stress - like expanding something under temperature in a free state. If the state is not free, then you have stress occurring at the same time.
Strain-stress diagram of copper and steel?
difference between Strain-stress diagram of copper and steel?
