Shape Factor For Rectangular Section
Shape factor is the ratio of plastic section modulus to the elastic section modulus.
Shape factor for rectangular section. Shape factor for rectangular section snehal walke. B width h height t wall thickness. For example shape factor s for rectangular section is 1 5 which means 50 extra moment a member can take after attaining first yield.
3 300mm 250mm i fig. For the case of a rectangular cross section the plastic neutral axis passes through centroid dividing the whole area into two equal parts. Shape factor signifies how much extra moment a member can take after attaining the first yield i e attaining yield strength by the extreme fibers it is a geometric property not a material property.
The compressive area would be a rectangle with dimensions b and h 2. For a wide flange section f is equal to 1 1. For a rectangular section f is equal to 1 5.
The same applies for the tensile area too. Determine the shape factors for the following sections i the rectangular section given in fig. For a rectangular cross section the factor n 1 2 and for a circular cross section n 1 11.
The ratio of mp to my is called as the shape factor f for the section. 1 i section fig. Unsubscribe from snehal walke.
2 iii circular section fig 3 ii 250nm 150mm 150mm 600mm diameterd 275mm 150mm i fig. How to find shape factor of a rectangle and a circle with derivation duration. Its centroid would be at a distance equal to h 4 from the x axis as shown in the next figure.