Question

A Cars What is the absolute maximum tensile stress in the stress element a to the nearest 0,01ksi? Note the member is a square cross section P=27k F-113k L-8ft b - 10 in d-1 in 90 F # 3 2 $ 4 % 5 & 7 6 8 9 W E R T Y u S F H к

Answer 1

F b d b L Given Data P=27k F = 113k L = 8 Ft b= loin d =lin solution compressive stress at a 오 Area 27K bob [ Area = bxb] - -0.27 27k 10 in x loin = -0.27 K [-ve means compressive ] inz CS Scanned with CamScanner

Due to Bending moment tensile stress at a Bending moment a FXL 113kx aft) · 113) X 8 X12 in. Cift: 12 inch] M = 10848 K.in As we know that Mc Bending moment moment of Inertia 17 Stress y distance from Neubral axis. This Bending moment causes tension above Neytral axis and compression below Neutral axis. so at point a is. tensile stress due to Bending moment. »។ (10din 72 M: 10848': y= d = lin 12 Put All values in Relationship than we get o(lensile stress) 10848 (kin) x12 xl in 104 in4 к 13.0176 - [the means tensile stress) in 2 CS Scanned will CamScanner

Absolute tensile stress at a= Tensile stress due to Bending moment - compressive stress due to P 13. 0176-0.27 0.27) К (13. T- 12.7476 K Absolute tensile stress at a = 12.7476 (ikz] Ang CS Scanned with CamScanner