Stress vs. Strain
Main DifferenceMany of you will be quite aware of Newton's 1st Law of Motion even if you are not a science student. They were the basis of the scientific hit are being followed even today. Newton's 1st Law of Motion states: "An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force." So with this one thing is clear that an external force is compulsion to make any change in an object or body. The force can even deform the object, stress and strain are interrelated and have a strong connection with the deforming forces. Stress is the measure of deforming force per unit area of the body, whereas strain is the relative change in the body's length due to the deforming forces. Stress has the similar unit as of pressure, Pascal (Pa), whereas in strain where its all about change in length, it is denoted as the percentage wise change in length of the body due to deforming force.

Difference Between Stress and Strain
Stress vs. Strain
Stress is the measure of deforming force per unit area of the body, whereas strain is the relative change in the body's length due to the deforming forces.
Stress vs. Strain
Stress has the similar unit as of pressure, Pascal (Pa), whereas in strain where its all about change in length, it is denoted as the percentage wise change in length of the body due to deforming force.
Stress vs. Strain
Strain in a body is directly proportion to the stress.
Stressnoun
(biology) A physical, chemical, infective agent aggressing an organism.
Strainnoun
(obsolete) Treasure.
Stressnoun
(biology) Aggression toward an organism resulting in a response in an attempt to restore previous conditions.
Strainnoun
(obsolete) The blood-vessel in the yolk of an egg.
Stressnoun
The internal distribution of force across a small boundary per unit area of that boundary (pressure) within a body. It causes strain or deformation and is typically symbolised by σ or τ.
Strainnoun
(archaic) Race; lineage, pedigree.
Stressnoun
Force externally applied to a body which cause internal stress within the body.
Strainnoun
Hereditary character, quality, or disposition.
There is a strain of madness in her family.Stressnoun
(uncountable) Emotional pressure suffered by a human being or other animal.
Go easy on him, he's been under a lot of stress lately.Strainnoun
A tendency or disposition.
Stressnoun
The emphasis placed on a syllable of a word.
Some people put the stress on the first syllable of “controversy”; others put it on the second.Strainnoun
(literary) Any sustained note or movement; a song; a distinct portion of an ode or other poem; also, the pervading note, or burden, of a song, poem, oration, book, etc.; theme; motive; manner; style
Stressnoun
(uncountable) Emphasis placed on words in speaking.
Strainnoun
(biology) A particular breed or race of animal, microbe etc.
They say this year's flu virus is a particularly virulent strain.Stressnoun
(uncountable) Emphasis placed on a particular point in an argument or discussion (whether spoken or written).
Strainnoun
(music) A portion of music divided off by a double bar; a complete musical period or sentence; a movement, or any rounded subdivision of a movement.
Stressnoun
obsolete form of distress
Strainnoun
(rare) A kind or sort (of person etc.).
Stressnoun
distress; the act of distraining; also, the thing distrained.
Strainnoun
The act of straining, or the state of being strained.
Stressverb
To apply force to (a body or structure) causing strain.
Strainnoun
A violent effort; an excessive and hurtful exertion or tension, as of the muscles.
he jumped up with a strain;the strain upon the sailboat's riggingStressverb
To apply emotional pressure to (a person or animal).
Strainnoun
An injury resulting from violent effort; a sprain.
Stressverb
(informal) To suffer stress; to worry or be agitated.
Strainnoun
A dimensionless measure of object deformation either referring to engineering strain or true strain.
Stressverb
To emphasise (a syllable of a word).
“Emphasis” is stressed on the first syllable, but “emphatic” is stressed on the second.Strainnoun
(obsolete) The track of a deer.
Stressverb
To emphasise (words in speaking).
Strainverb
(obsolete) To beget, generate (of light), engender, copulate (both of animals and humans), lie with, be born, come into the world.
A man straineth, liveth, then dieth.Man, look at that cat straining that kitty.Naked they gan; nis there none of other agramed; ne for their nakedhood ashamed; without lust of sin they strain.Thy wife is thine alone, only thou mayest strain on her; no other man may strain on thy wife ne mayest thou strain on a wife of another.Stressverb
To emphasise (a point) in an argument or discussion.
I must stress that this information is given in strict confidence.Strainverb
(obsolete) To hold tightly, to clasp.
Stressnoun
the relative prominence of a syllable or musical note (especially with regard to stress or pitch);
he put the stress on the wrong syllableStrainverb
To apply a force or forces to by stretching out.
to strain a rope; to strain the shrouds of a shipRelations between the United States and Guatemala traditionally have been close, although at times strained by human rights and civil/military issues.Stressnoun
(psychology) a state of mental or emotional strain or suspense;
he suffered from fatigue and emotional tensionstress is a vasoconstrictorStrainverb
To damage by drawing, stretching, or the exertion of force.
The gale strained the timbers of the ship.Stressnoun
(physics) force that produces strain on a physical body;
the intensity of stress is expressed in units of force divided by units of areaStrainverb
To act upon, in any way, so as to cause change of form or volume, as when bending a beam.
Stressnoun
special emphasis attached to something;
the stress was more on accuracy than on speedStrainverb
To exert or struggle (to do something), especially to stretch (one's senses, faculties etc.) beyond what is normal or comfortable.
Sitting in back, I strained to hear the speaker.Stressnoun
difficulty that causes worry or emotional tension;
she endured the stresses and strains of lifehe presided over the economy during the period of the greatest stress and dangerStrainverb
To stretch beyond its proper limit; to do violence to, in terms of intent or meaning.
to strain the law in order to convict an accused personStressverb
to stress, single out as important;
Dr. Jones emphasizes exercise in addition to a change in dietStrainverb
(transitive) To separate solid from liquid by passing through a strainer or colander
Stressverb
put stress on; utter with an accent;
In Farsi, you accent the last syllable of each wordStrainverb
(intransitive) To percolate; to be filtered.
water straining through a sandy soilStressverb
test the limits of;
You are trying my patience!Strainverb
To make uneasy or unnatural; to produce with apparent effort; to force; to constrain.
Strainverb
To urge with importunity; to press.
to strain a petition or invitationStrainnoun
(physics) deformation of a physical body under the action of applied forces
Strainnoun
difficulty that causes worry or emotional tension;
she endured the stresses and strains of lifehe presided over the economy during the period of the greatest stress and dangerStrainnoun
a succession of notes forming a distinctive sequence;
she was humming an air from BeethovenStrainnoun
(psychology) nervousness resulting from mental stress;
his responsibilities were a constant strainthe mental strain of staying alert hour after hour was too much for himStrainnoun
a special variety of domesticated animals within a species;
he experimented on a particular breed of white ratshe created a new strain of sheepStrainnoun
(biology) a group of organisms within a species that differ in trivial ways from similar groups;
a new strain of microorganismsStrainnoun
a lineage or race of people
Strainnoun
injury to a muscle (often caused by overuse); results in swelling and pain
Strainnoun
pervading note of an utterance;
I could follow the general tenor of his argumentStrainnoun
an effortful attempt to attain a goal
Strainnoun
an intense or violent exertion
Strainnoun
the act of singing;
with a shout and a song they marched up to the gatesStrainverb
to exert much effort or energy;
straining our ears to hearStrainverb
test the limits of;
You are trying my patience!Strainverb
use to the utmost; exert vigorously or to full capacity;
He really extended himself when he climbed KilimanjaroDon't strain your mind too muchStrainverb
separate by passing through a sieve or other straining device to separate out coarser elements;
sift the flourStrainverb
make tense and uneasy or nervous or anxious;
Strainverb
stretch or force to the limit;
strain the ropeStrainverb
remove by passing through a filter;
filter out the impuritiesStrainverb
rub through a strainer or process in an electric blender;
puree the vegetables for the babyStrainverb
alter the shape of (something) by stress;
His body was deformed by leprosyComparison Chart
Stress | Strain |
Stress is the measure of deforming force per unit area of the body. | Strain is the relative change in the body's length due to the deforming forces. |
Units | |
Stress has the similar unit as of pressure, Pascal (Pa). | In strain where its all about change in length, it is denoted as the percentage wise change in length of the body due to deforming force. |
What is Stress?
Stress is the measure of deforming force per unit area of the body. The stress on an object can change it physically or can even change its stability from rest to moving. Depending upon the direction, stress can be grouped into two main types, Normal Stress or Shear Stress. Shear stress is a stress state where the stress is parallel to the surface of the material, as opposed to normal stress when the stress is perpendicular to the surface. On the other hand, depending upon the physical change stress carries out to the objects it can mainly be grouped as Tensile Stress and Compressive Stress. The stress which led to increase in the length of objects it is called Tensile stress, whereas the stress compressing or shortening the length of object is called Compressive Stress.
What is Strain?
Strain is the measure of relative change in the body’s length due to the deforming forces. It is a dimensionless quantity, usually giving out the answers percentage-wise. Keeping it simple, the length before the deforming force brings out any change is noted therefore the change in length due to the deforming force afterwards is noted. The difference between both the measurements is the strain and it is expressed in terms of percentages. Strain can be mainly divided into three types, Longitudinal Strain, Shearing Strain and Volumetric Strain. Strain in a body is directly proportion to the stress.