Pressure v/s Stress

Though units for pressure and stress are same (i.e N/mm2)
What is the difference between stress and pressure?

Questions by vrsaikumar   answers by vrsaikumar

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abhishank  

  • Member Since Jun-2009 | Jun 28th, 2009


Stress is restoring force developed in the body due to any tensile, compressive or any other force per unit area and on the other hand pressure is force applied on a body per unit area.

Showing Answers 1 - 67 of 67 Answers

abhishank

  • Jun 28th, 2009
 

Stress is restoring force developed in the body due to any tensile, compressive or any other force per unit area and on the other hand pressure is force applied on a body per unit area.

manish l. shirbhate

  • Aug 25th, 2011
 

Stress is force causes deformation. Pressure is force spread out over area

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manish l. shirbhate

  • Aug 25th, 2011
 

Pressure=External Force Applied / Unit Area
Stress =Internal Resistive Force/ Unit Area

Pushpendra Gupta

  • Sep 3rd, 2011
 

Stress is a resistive force per unit area. while force is a ratio of just force to area.

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muhammad kashif

  • Feb 16th, 2012
 

Mainly both the stress and pressure are same except being applied in different forms. Pressure is applied on external surface of a body, while stress is the internal resistive force per unit area of that body, which resists its elongation or compression.
The other difference is pressure is applied normal to the body but stress may be in any direction.
Normally pressure is applied in fluid while stress is in solid or material form.

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kalpesh

  • Feb 23rd, 2012
 

Pressure is action and stress is reaction

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Nayem Reza. IUT

  • Feb 28th, 2012
 

Simply speaking, pressure is the external force applied per unit area in a body and Stress is the reaction of that external force.

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nidhi

  • Mar 6th, 2012
 

Pressure force is perpendicular whereas stress is not

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sachin

  • Mar 14th, 2012
 

Although both have same unit but pressure is applied externally and stress is induced by the body to resist external force

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nagesh singh baghel

  • Mar 21st, 2012
 

Pressure is acts in fluid, liquid or gases(perpendicular) but stress is acts in solid states.

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DEEPAK LAL

  • Mar 21st, 2012
 

Both have same answer, but pressure apply only for fluid in term of force, while stress is only resist to force of solid body.

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SAGAR

  • Mar 29th, 2012
 

Pressure can be applied externally, but stress develops internally due to the force applied.

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Dr. Bimal Sarangi

  • Mar 30th, 2012
 

Stress is resistance to deformation and pressure is cause of deformation.

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Aakash ahuja

  • Apr 1st, 2012
 

When force is applied on an object externally in an unit area is known as "pressure" , where as the body resists this external force in a unit area is termed as "stress".

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Shahid Hussain

  • Apr 3rd, 2012
 

Pressure is the normal compressive force acting on the surface, it is scalar and act externally.
While, Stress is the internal resistance (force) per unit area, it is tensor(neither vector nor scalar) having a certain rank

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jaydeep boricha

  • Apr 14th, 2012
 

generally, the word pressure is the term regarding the fluid parameter and the word stress is the term regarding the solid component or say solid parameter

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ANUP BHARDWAJ

  • Apr 28th, 2012
 

stress=resistive force/area
pressure=force/area

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RAJESHKUMAR

  • Apr 29th, 2012
 

P=F/A STRESS=P/A

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deva

  • May 1st, 2012
 

The resisting force offered by the body against deformation is know as stress.

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NISHANT SINGH

  • May 3rd, 2012
 

Pressure is the applying force, stress is the resistance to that force,,,,,,,,,,,,,pressure term is used for to the fluids whereas stress is used for solid bodies.

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RASHMI RANJAN DAS

  • May 6th, 2012
 

Generally pressure is defined as the normal force per unit cross-sectional area but stress is defined as the resistive force per unit cross sectional area

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Praveesh Ambady

  • Jun 6th, 2012
 

Stress can be induced by pressure.
For example, in the case of pipe, if we need to apply a circumferential stress to the material, we have to fill the pipe with water and then pressurize water, so that stress will be exerted on the pipes wall.

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Ajay Sri Harsha

  • Jun 6th, 2012
 

Pressure is an external feature of the system where as stress is the internal feature of the system. pressure is due to external factors like applied force and due to some external action...but stress is due to internally induced forces or resistant forces developed.

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niharika mohanta

  • Jun 18th, 2012
 

stress is applied to solid body.when a force is applied to the solid body internal resisting force developed to resist that applied force.stress is the ratio of internal resisting force per unit area.
but when the stress field is hydrostatic stress is pressure i.e force/unit area.pressure is a scalar (non directional quantity),but stress is a directional (vector quantity)

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mangesh

  • Jul 1st, 2012
 

Pressure is force applied to bring deformation while stress is internal produced to prevent deformation

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RAMZIN T P

  • Jul 2nd, 2012
 

Pressure=force/area
Stress=resistive force/area

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S.Palanikumar

  • Jul 3rd, 2012
 

Pressure and stress has same unit. Unit is Newton per metre square.

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Vishal

  • Jul 4th, 2012
 

Stresses are for solids and viscous fluids while pressure is related to liquid and gases

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debabrata sikder

  • Jul 9th, 2012
 

Pressure is cause due to external force but stress is causes due to internal force . This internal force is generated due to external force means stress predominate the external pressure.

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MOHAN RAM

  • Jul 11th, 2012
 

Stress= Resistive force/Area, it is pull force.
Pressure= Force/Area, it is push force.

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SANTHOSHKUMAR.K

  • Jul 14th, 2012
 

simply says
stress is scaler quantity.
presure is vector quantity.

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AJINKYA PATIL

  • Jul 28th, 2012
 

stress=internal restoring force/area
pressure=applied force/area

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Rakesh patil from belgaum

  • Aug 24th, 2012
 

Simply stress is for solid items and pressure is for liquids and we know that both having same SI units

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bhasker

  • Aug 27th, 2012
 

Stress is generated within the material whereas pressure is the applied force

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BHAUTIK USDADIYA

  • Sep 7th, 2012
 

Simple stress is solid body ingress and pressure solid body digress.

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yeshwanth

  • Sep 7th, 2012
 

Stress is developed due to the internal resistance due to applied force. Pressure is the external force acting per unit sq. area

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Jay

  • Sep 8th, 2012
 

Stress depends on material properties as well as net force applied. It may occur in both compressive as well as tensile force. Where pressure depends upon net compressive force applied.

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Suppose you are applying tensile force on a steel bar then how it responds? You are holding that bar and stretching it along the axis, now think about the half portion (along axis & suppose left portion) of that loaded bar. How will draw you the free body diagram for this portion? Since, that half portion is static (not moving or no translation motion) so, net force acting on this half portion will be zero. Since you are applying a force on this portion from left so, for counter balancing that, definitely their will exist another force in right direction. This force is provided by the internal fibers of loaded bar. So, we can easily say that internal forces are existing within the loaded bar. These internal force per unit area is called stress. Stress is also called internal resistance developed within the loaded specimen.
Pressure can be practically realized by thinking that you are diving under the water surface. Water will exert force on your body. So, pressure is force per unit area but this force is the surface force not the internal force and it should be carefully considered that the pressure force at every point of surface is perpendicular to that surface at that point. If any applied force is somewhat inclined to the surface then to calculate the pressure force we have to break the components of force and for purpose of pressure calculation, only perpendicular component will be considered. Thanks...

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prashanth m m

  • Sep 20th, 2012
 

pressure is an external agency,where as stress is an internal agency

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anupam negi

  • Sep 26th, 2012
 

Pressure is amount of external force applied on certain cross section. Whatever may be the medium is.
On the other hand stress is amount of internal resistance imparted by certain body on applying any sort of force to it.

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Nilesh Bhole

  • Oct 9th, 2012
 

Pressure is external force per unit surface area.
Stress is internal force per unit cross sectional area.

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Mallayya S M

  • Oct 12th, 2012
 

Pressure dint have any place specific, but it applied either large or small area. In stress the force is applied per unit area.

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dibyendu debnath

  • Oct 13th, 2012
 

Pressure is exerted by any substance where as the stress is developed due to applied load on the object. Stress is the substance tendency to resist to deform or we can say oppose the force.

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Pressure is a scalar quantity whereas stress is a resistive force against the external applied force and it is a tensor quantity which acts at a point and also depends on the direction normal of the plane passing through that point.

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phani

  • Dec 10th, 2012
 

Stress is pull force and pressure is the push force.

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Janmejaya

  • Dec 27th, 2012
 

Pressure is the external force per unit surface area of a material . But stress is the internal resisting force acting over a cross-section of the material or in other words it is the restoring force per unit area.

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sandeep chidmalwad

  • Jan 7th, 2013
 

Pressure and Stress both are inversely proportional into them.

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gowdham

  • Jan 9th, 2013
 

stress=resistive force/area
pressure=force/area

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waseemraj(klecet ,vtu)

  • Jan 11th, 2013
 

Stress is resistance force offered per unit area by material under the action of load upon it. but pressure is externally applied force per unit area to the material. please notify this line pressure can be applied but stress cant..

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Awais

  • Jan 11th, 2013
 

Though stress and pressure both have same units as N/m2, but Stress is an intrinsic property of system which complies with the effect of the externally applied pressure force. Pressure is that applied force which will generate stress inside the materials.

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sudhansu kar

  • Feb 8th, 2013
 

more specifically stress is related to solid where as pressure is related to fluid.

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Bilal

  • Feb 25th, 2013
 

pressure is action while stress is reaction of pressure

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Vijju

  • Mar 10th, 2013
 

Stress is the unit reactive force developed within a body due to an external load, it oppses deformation of the body. Whereas pressure in the unit applied load. Also unit of pressure in Pascal, stress is never expressed in terms of Pascals

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abhinav kumar

  • Apr 17th, 2013
 

generally, pressure and stress can be distinguished by the point of application where it is applied,
if we are applying in fluid parameter then it is pressure and in solid state parameter then it will be stress.

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gaurav

  • May 18th, 2013
 

stress is the after effect of pressure.

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Praveen Kumar

  • May 29th, 2013
 

stress is resistive force per unit area whereas pressure is applied force per unit area

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yogeshwaran

  • Jun 6th, 2013
 

Stress is for solids where as pressure is for both liquids and gases

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VISHWARANJAN KUMAR

  • Jun 23rd, 2013
 

Stress is pull force while pressure is push force.

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Mohammed Murad

  • Jun 28th, 2013
 

air conditioner used for condition the air by heating or cooling the air ,but refrigerator used only for cooling

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aman arora

  • Jul 25th, 2013
 

stress is internal resistance to deformation, while pressure is outside phenomenon

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manoj sharma

  • Aug 8th, 2013
 

stress occurs in rigid bodies and pressure is studies for gases and liquids (fluids)

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farshid

  • Oct 11th, 2013
 

stress is scaler .not vector

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When we applied load per unit area that is pressure And internal resistance (i.e. reaction due to applied force) per unit area is Stress.
It means pressure is due to externally applied force and stress is due to internal reaction(that will be a force) due to that applied force.

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swadhapriya ghosh

  • Sep 2nd, 2014
 

Stress is worked in solid metal or means of any m/c,. but pressure works in fluid mechanics.

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