STRUCTURAL MECHANICS-66441

1.1 Mention the necessity to know about the mechanical properties of materials.

1.2 Define the following terms:

a. Stress, tensile stress, compressive stress, shear stress.

b. Strain, tensile strain, compressive strain, shear strain,

c. Hooke’s law, modulus of elasticity and modulus of rigidity.

1.3 Explain stress-strain diagram of mild steel and concrete.

1.4 Define the following terms:

a. Elasticity, proportional limit, yield point, ultimate stress, breaking stress, working stress and

factor of safety.

b. Strength, stiffness, toughness, ductility, malleability, brittleness, creep, fatigue failure, resilience,

modulus of resilience, thermal stress in simple bar and poisons ratio.

1.5 Compute stress, strain, modulus of elasticity and modulus of rigidity.

1.6 Solve problems involving resilience, thermal stress and poisons ratio.

1.7 Compute stress develop in composite bar under tension and compression.