8.4-10 An overhanging beam ABC has a guided support at A, a rectangular cross section, and sup- ports an upward uniform load q = PIL over AB and a downward concentrated load P at the free end C (see figure). The span length from A to B is L, and the length of the overhang is L/2. The cross section has a width of b and a height h. Point D is located midway between the supports at a distance d from the top face of the beam. Knowing that the maximum tensile stress (principal stress) at point D is o, = 38 MPa, determine the mag- nitude of the load P. Data for the beam are L =1.75 m, b = 50 mm, h = 220 mm, and d = 55 mm. q = PIL D. A p. L L 2 2 2

8.4-10 An overhanging beam ABC has a guided support at A, a rectangular cross section, and sup- ports an upward uniform load q = PIL over AB and a downward concentrated load P at the free end C (see figure). The span length from A to B is L, and the length of the overhang is L/2. The cross section has a width of b and a height h. Point D is located midway between the supports at a distance d from the top face of the beam. Knowing that the maximum tensile stress (principal stress) at point D is o, = 38 MPa, determine the mag- nitude of the load P. Data for the beam are L =1.75 m, b = 50 mm, h = 220 mm, and d = 55 mm. q = PIL D. A p. L L 2 2 2

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter8: Applications Of Plane Stress (pressure Vessels, Beams, And Combined Loadings)

Section: Chapter Questions

Problem 8.4.10P: An overhanging beam ABC has a guided support at A, a rectangular cross section, and supports an...

See similar textbooks

Similar questions

A singly symmetric beam with a T-section (see figure) has cross-sectional dimensions b = 140 mm, a = 190, 8 mm, b. = 6,99 mm, and fc = 11,2 mm. Calculate the plastic modulus Z and the shape factor.
Segments AB and BCD of beam ABCD are pin connected at x = 10 ft. The beam is supported by a pin support at A and roller supports at C and D; the roller at D is rotated by 30* from the x axis (see figure). A trapezoidal distributed load on BC varies in intensity from 5 lb/ft at B to 2.5 lb/ft at C. A concentrated moment is applied at joint A, and a 40-lb inclined load is applied at the mid-span or CD. (a) Find reactions at supports A, C, and D. (b) Find the resultant force in the pin connection at B. (c) Repeat parts (a) and (b) if a rotational spring(kr= 50 ft-lb/radian ) is added at A and the roller at C is removed.
Beam ABC is fixed at support A and rests (at point B) upon the midpoint of beam DE (see part a of the figure). Thus, beam, ABC may be represented as a propped cantilever beam with an overhang BC and a linearly elastic support of stiffness k at point B (see part b of the figure). The distance from A to B is L = 10 ft, the distance from B to C is L/2 = 5 ft, and the length of beam DE is L = 10 ft. Both beams have the same flexural rigidity EI. A concentrated load P = 1700 lb acts at t lie free end of beam ABC. Determine the reactions RA, RB+ and MAfor beam ABC. Also, draw the shear-force and bending-moment diagrams for beam ABC, labeling all critical ordinates.
Two flat beams AB and CD, lying in horizontal planes, cross at right angles and jointly support a vertical load P at their midpoints (see figure). Before the load P is applied, the beams just touch each other. Both beams are made of the same material and have the same widths. Also, the ends of both beams are simply supported. The lengths of beams AB and CD are LABand LCD, respectively. What should be the ratio tABltCDof the thicknesses of the beams if all four reactions arc to be the same?
A cantilever beam of W 12 × 14 section and length L = 9 ft supports a slightly inclined load P = 500 lb at the free end (see figure). Plot a graph of the stress o 4at point A as a function of the angle of inclination or Plot a graph of the angle L/3, which locates the neutral axis ma as a function of the angle a. (When plotting the graphs, let a vary from 0 to 10º) See Table F-1(a) of Appendix F for the dimensions and properties of the beam.
An overhanging beam ABC has a guided support at A, a rectangular cross section, and supports an upward uniform load q = PtL over AB and a downward concentrated load P at the free end C {see figure). The span length from A to B is L, and the length of the overhang is L12. The cross section has a width of A and a height A. Point D is located midway between the supports at a distance d from the top face of the beam. Knowing that the maximum tensile stress (principal stress) at point Z> is tr, = 38 MPa, determine the magnitude of the load P. Data for the beam are L = 1.75 m, b = 50 mm, // = 220 mm, and d = 55 mm.
Uniform load q = 10 lb/ft acts over part of the span of fixed-end beam AB (see figure). Upward load P = 250 lb is applied 9 ft to the right of joint A. Find the reactions at A and B.
A simple beam ABC having rectangular cross sections with constant height A and varying width bxsupports a concentrated load P acting at the midpoint (see figure). How should the width bxvary as a function of x in order to have a fully stressed beam? (Express bxin terms of the width bgat the midpoint of the beam.)
A steel beam ABC is simply supported at A and fiand has an overhang BC of length L = 150 mm (see figure). The beam supports a uniform load of intensity q = 4,0 kN/m over its entire span AB and l.5g over BC. The cross section of the beam is rectangular with width h and height 2b. The allowable bending stress in the steel iso"a|]ûW = 60 MPa, and its weight density is y = 77.0 kN/m . Disregarding the weight of the beam, calculate the required width b of the rectangular cross section. Taking into account the weight of the beam, calculate the required width b.
A fixed-end beam is loaded by a uniform load q = 15 kN/m and a point load P = 30 kN at mid-span. The beam has a length of 4 m and modulus of elasticity of 205 GPa. Find reactions at A and B. Calculate the height of the beam if the displacement at mid-span is known to be 3 mm. Assume that the beam has rectangular cross section with h/b = 2.
A cantilever beam A3, loaded by a uniform load and a concentrated load (sec figure), is constructed of a channel section. (a) Find the maximum tensile stresser, and maxi-mum compressive stress trcif the cross section has the dimensions indicated and the moment of inertia about the - axis (the neutral axis) is t = 3.36 in4. Note: The uniform load represents the weight of the beam. Find the maximum value of the concentrated load if the maximum tensile stress cannot exceed 4 ksi and the maximum compressive stress is limited to 14.5 ksi. How far from A can load P = 250 lb be positioned if the maximum tensile stress cannot exceed 4 ksi and the maximum compressive stress is limited to 14.5 ksi?
A simple beam AB supports two concentrated loads P at the positions shown in the figure. A support C at the midpoint of the beam is positioned at distance d below the beam before the loads are applied. Assuming that d = 10 mm, L = 6m, E = 200 G Pa, and I = 198 x 106 mm4, calculate the magnitude of the loads P so that the beam just touches the support at C.