The shape factor for a rectangular section is 1.5.
Solution
Shape factor is defined as the ratio of plastic moment capacity to its yield moment capacity.
Shape factor=Plastic moment capacity/Yield moment capacity
Shape factor represents the strength of a section after its yielding.
SF=MP/My=ZPfy/Zefy=ZP/Ze
Where ZP and Ze are the plastic section modulus and elastic section modulus of the section respectively.
Value of shape factor for the different sections:
Section | Shape factor |
Triangular Section | 2.34 |
Rectangular Section | 1.5 |
Solid circular section | 1.7 |
Thin hollow tube | 1.27 |
Note: More value of shape factor represents that section can withstand more stresses after its yielding. Hence, the shape factor for a rectangular section is 1.5.
☛ Related Questions:
Comments
write a comment