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What happens when the stress and strain of elastic deformation along tectonic plates reaches the breaking point?
This is known as faulting. As such, the broken surfaces are known as faults.
How do you know the material is elastic?
it depends on modulus of elasticity / young's modulus,,,,,,,which is ratio of stress and strain under elastic limit
What is plasticity in chemistry?
Plasticity is the characteristic of a metal where it undergoes inelastic strains beyond the elastic limit.Until the elastic limit point, the strain that a metal undergoes is elastic, meaning the metal will regain its original dimensions upon unloading. For example, during a tensile test, a metal pulled in tension to a strain below its elastic limit will return to its original dimensions upon release.However, if a metal is strained beyond the elastic limit into the plastic region, the strain will be inelastic, meaning the metal will be unable to return to its original dimensions upon unloading. Large deformations in ductile materials result in plastic flow.Metals experience periods of both elastic and plastic deformation. On a stress-strain curve, the elastic region is followed by the plastic region. Oftentimes, the elastic limit is approximated as equal to the proportional limit and (for mild steel) the yield stress.
Could you show the derivation of elastic strain energy per unit volume?
U= vol metric integral1/2(stress* strain)dxdydz
Where is the energy of an earthquake stored before the earthquake?
It is stored in the form of elastic strain (also known as elastic potential energy) in the rocks of the crust as they deform under stress.
What happens when the stress and strain of elastic deformation along tectonic plates reaches the braking point?
When the stress within the rock mass exceeds the elastic limit, then either a slip will occur along a pre-existing fault to releases the accumulated strain energy. This release of energy is more commonly known as an earthquake!
What happens when the stress and strain of elastic deformation along tectonic plates reaches the breaking point?
This is known as faulting. As such, the broken surfaces are known as faults.
How is the energy that causes an earthquake stored before the earthquake happens?
It is stored in the form of elastic strain (also known as elastic potential energy) in the rocks of the crust as they deform under stress.
Where does the energy created by an earthquake come from?
The energy that is released by an earthquake is formed due to the accumulation of elastic strain energy in the crust around a fault due to deformation (a bit like the energy stored in a compressed spring). As the stress and resultant strain accumulates, it ultimately exceeds the shear strength of the rock mass in the fault zone or the shear strength of the fault itself and causes a brittle failure or rupture to occur. This causes sudden movement, fracturing of the rock mass and a sudden release of the accumulated elastic strain energy in the form of seismic waves, heat and sound.
What are examples of elastic spring force?
If you stretch a rubber band then release it, it will return to its original shape. That is by definition elastic strain. Anything that returns to its original shape after being affected by force underwent elastic strain. If it is permanently deformed (ie you bent a paperclip out of place and it wont return to its original shape) then it passes the elastic strain region and suffered plastic strain.
What happens when friction between opposute sides of a fault is high?
Strain builds up until the release is shocking.
Is a rubber band a synonym for elastic strain?
yes.......................it is a stretchy elastic rubber band
What is elastic strain?
Energy stored as a change in shape
How can a rubber band be modeled as an elastic strain?
Because, like a rubber band, it can be stretched until it can't be stretched anymore. When the rocks cannot be stretched anymore, the fault breaks and slips as earthquakes.
What forms of energy are in stretched elastic?
strain energy when you let go of the elastic it is transferred as kinetic energy
How do you calculate the elastic limit?
By using stress-strain curve.
How do earthquakes stop?
They stop naturally, when the shockwaves subside. To understand why earthquakes stop it is necessary to understand what causes earthquakes to start in the first place! So here's a bit of background... Earthquakes are most commonly caused by stress in the earth's crust causing it to change shape or deform. This deformation or change in shape is more correctly known as strain and causes energy to be stored in the deformed rocks (known as elastic strain or elastic potential energy). When the stress becomes larger than the strength of the rockmass around the fault zone (a fault zone can be thought of very simply as a crack in the earth's crust) the fault ruptures or moves releasing the stored elastic strain energy as seismic waves. Once all the stored energy has been dissipated (or released then the earthquake (and aftershocks) will stop.
