What is stress too strain
In this topic nosotros volition hash out the Definition of stress too strain, their formula equally good equally human relationship too units.What is stress ?
When a torso is subjected to external forces, equal too contrary internal forces are developed at the diverse sections of that body. This resisting strength is known equally unit of measurement stress or stress.
Formula of stress :
Stress = Force / Cross sectional are = P/A
Stress is by too large denoted past times the Greek alphabetic quality sigma .
IN arrangement international (S.I) the unit of stress is Pascal (Pa) .
i Pa = i Newton /1 foursquare meter.
In practical calculation, bigger units similar megapascal (Mpa) or gigapascal (Gpa) is used. I promise that important of stress is rattling much clear now.
What is Strain ?
When a torso experiences a arrangement of force, roughly deformation (elastic or plastic) takes place. This deformation per unit of measurement length of the torso is know equally the unit of measurement strain or only strain.Formula of Strain:
Strain = Change inwards the length of the torso / Original length
Strain is by too large expressed past times the Greek alphabetic quality epsilon .
Stress Strain Relationship
For agreement the stress strain human relationship nosotros tin sack explicate the stress-strain diagram for mild steel which is nether tensile load.
From the stress strain graph nosotros tin sack honor the yield stress, ultimate stress too breaking stress. After passing the yield point plastic deformation occurs.
Sumber http://mechanicalinventions.blogspot.com