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

3. ELASTICITY OF MATERIALS

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

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

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

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

9. DETERMINATION OF MODULUS OF ELASTICITY

10. STRESS- SRAIN CURVE

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

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

13. THANK YOU