Posted inSolid Mechanics
Sign Conventions for Shear Stresses and Strains
1.) Shear stress acting on a positive face of an element is positive if it acts in the positive direction of one of…
Posted inSolid Mechanics
Shear Strain,γ
is a measure of the distortion, or change in shape, of the element and is called…
Posted inSolid Mechanics
Shear Stress, τ
i. Direct shear (or simple shear) in which the shear stresses are created by the direct…
Posted inSolid Mechanics
Elasticity, plasticity, and creep
Elasticity : Property of a material, by which it returns to its original dimension duringunloading Partially elastic : During…
Posted inSolid Mechanics
Hooke’s Law
i. The modulus of elasticity is the slope of stress-strain diagram in the linearly elastic region…
Posted inSolid Mechanics
Offset yield stress
i. When a material such as aluminum does not have an obvious yield point and yet…
Posted inSolid Mechanics
Stress-Strain Diagrams – Specimen under tension
a) Test results generally depend upon the dimensions of the specimen being tested. Test results in…
Posted inSolid Mechanics
Normal Strain,ε
a) The elongation of a segment is equal to its length divided by the total length L and…
Posted inSolid Mechanics
Normal Stress,σ
a) gives the intensity of stress uniformly distributed over the cross section in an axially loaded, prismatic bar of…
Posted inHeat & Mass Transfer
HEAT PIPES
1) A heat pipe is a simple device with no moving parts that can transfer large…