MZK Rafiqul Islam Asstant Professor( Civil ) TTTC Subject: Structural Mechanics for 1st Year BSc Tech

ELASTICITY OF MATERIALS

Learning outcome Able to define stress and strain Able to explain Hook’”s Law Able to deter mine stress, strain and Modulus of elasticity

A=Area p STRESS =S=LOAD/AREA= P/A STRESS

∆L∆L L L STRAIN=∂ =ELONGATION/ORIGINAL LENGTH= ∆L/L STRAIN

HOOK’S LAW IT STATES THAT STRESS AND STRAIN WITHIN ELASTIC LIMIT STRESS DEVELOPED IS DIRECTLY PROPORTIONAL TO STRAIN

DETERMINATION OF MODULUS OF ELASTICITY

STRESS- SRAIN CURVE

EVALUATION EXPLAIN STRESS AND STRAIN DEFINE ELASTICITY STATE HOOK’S LAW

HOME WORK WRITE DOWN STEP TO DETERMINE THE MODULUS OF SOLID MATERIALS

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