Strength Of Materials -I

According to RTU Syllabus

UNIT-I

PART-3

True and Apparent Stress

• As Elongation takes place,cross-sectional area  and length of the specimen also changes.
• If stress and strain are plotted corresponding to actual area of cross section and actual length at any time,we get true stress strain curve.

 

Hooke's law

• Stress is proportional to strain within proportional limit.

 

 

 

 

 

 

 

 

 

• It is valid for isotropic,homogeneous and linearly elastic material.

Isotropic

• Similar property in all directions.

Homogeneous

• Similar Property throughout the volume

Homogeneous and isotropic

Homogeneous but not isotropic

Young's Modulus / Modulus of Elasticity

Yield stress and Permissible stress

Permissible stress = Yield stress / Factor of safety

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STRENGTH OF MATERIALS - I

UNIT - I

PART - 4

According to RTU Syllabus

Stress strain curve for other Materials

Brittle Material (Cast Iron)

Aluminium and Copper

Stress strain curve for Brittle Material (Cast Iron)

Stress strain curve for Aluminium and Copper

ADITI SHARMA

STRENGTH OF MATERIALS - I

UNIT-I

PART-5

According to RTU Syllabus

Stresses in Prismatic Members

Stresses in Non-Prismatic Members

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