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# Diference between pressure and stress?

Question asked by chandruvenkat in #Coffee Room on Jul 28, 2012
chandruvenkat · Jul 28, 2012
Member of CrazyEngineers
I wish to understand the real difference between pressure and stress? Isn't it one and the same thing? Posted in: #Coffee Room
sweet_honey · Jul 28, 2012
Member of CrazyEngineers
pressure is externaly applied on any body while the stress is internal resistance of the body
raika · Jul 28, 2012
Member of CrazyEngineers
pressure is only give informatoin about force and area but stress give information about difomation also.
CKRao · Jul 28, 2012
Member of CrazyEngineers
pressure is an externally applied force per unit area, while stress is internally developed in a material when forces are applied.
zaveri · Jul 28, 2012
Member of CrazyEngineers
pressure acts in all directions, but stress acts only in one particular direction(in the direction of application of force).
Ammar Aziz · Jul 29, 2012
Member of CrazyEngineers
the above mentioned replies are good but you can also recognize the pressure as the 'CAUSE' and stress as the 'EFFECT'.
vignesh daniel · Jul 29, 2012
Member of CrazyEngineers
chandruvenkat
difference between pressure and stress?
pressure will act at one point in all direction and stress will act on particular area.
ARISTOTLEUC · Jul 31, 2012
Member of CrazyEngineers
Though both pressure and stress are functions of force and area, pressure distinguishes itself from stress in that it causes the exertion of force in all direction in the given area, while stress accompanies the applied force in a direction opposite to that of the applied force in a given cross-sectional area.
vikaskumar11233 · Jul 31, 2012
Member of CrazyEngineers
Pressure is the external force acting over a unit surface area of a material. Stress is an internal force acting over a cross sectional area within the material.
chandruvenkat · Aug 1, 2012
Member of CrazyEngineers
but both hav a same unit?
nibhani · Aug 1, 2012
Member of CrazyEngineers
chandruvenkat
difference between pressure and stress?
pressure is applied externally in any direction but stress is applied only in the opposite direction of force applied...
zaveri · Aug 1, 2012
Member of CrazyEngineers
nibhani
pressure is applied externally in any direction but stress is applied only in the opposite direction of force applied...
stress is "induced" , not "applied"
nibhani · Aug 3, 2012
Member of CrazyEngineers
zaveri
stress is "induced" , not "applied"
depends on ur analysis way it can be induced by itself and applied by resisting particle...

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