题目内容
（请给出正确答案）
A simple beam (L = 9 m) with attached bracket BDE has force P = 5 kN applied downward at E. The bending moment just right of B is approximately:
A、6 kN·m
B、10 kN·m
C、19 kN·m
D、22 kN·m
简答题官方参考答案
（由简答题聘请的专业题库老师提供的解答）
抱歉！暂无答案，正在努力更新中……
更多“a simple beam （l = 9 m) with attached bracket bde has force p = 5 kn applied downward at e. the bend…”相关的问题
A simple beam of length L = 5 m carries a uniform load of intensity q= 5.8 kN/m and a concentrated load 22.5 kN (see fgure). (a) Assuming
= 110 MPa , calculate the required section modulus S. Then select the most economical wide-flange beam (W shape) from Table F-1(b) in Appendix F, and recalculate S, taking into account the weight of the beam. Select a new beam if necessary. (b) Repeat part (a), but now assume that the design requires that the W shape must be used in weak axis bending (i.e., it must bend about the 2–2 (or y) axis of the cross section).
Determine the maximum tensile stress
and maximum compressive stress
due to the load P acting on the simple beam AB (see fgure). (a) Data are P = 6.2 kN , L = 3.2 m , d = 1.25 m , b = 80 mm , t = 25 mm , h =120 mm , and
= 90 mm . (b) Find the value of d for which tensile andcompressive stresses are the largest. What are these stresses？
Find shear () kN and moment () kN·m at x = 3L/4 for the beam shown in Fig. a. Let MA = 24 kN·m, P = 48 kN, L=6 m, and q0 = 8 kN/m.
Draw the shear-force and bending-moment diagrams for a simple beam AB supporting two equal concentrated loads P (see figure).
Find shear () kN and moment () kN·m at x = 3L/4 for the beam shown in Fig. b(first solve for the reaction moment at fixed support A). Let MA = 24 kN·m, P = 48 kN, L=6 m, and q0 = 8 kN/m.
A simply supported wood beam (L =0.5 m) with rectangular cross section (b = 200 mm, h = 280 mm) carries uniform load q =6.5 kN/m includes the weight of the beam. The maximum flexural stress is approximately:
A、8.7 MPa
B、10.1 MPa
C、11.4 MPa
D、14.3 MPa
A cantilever beam AB is loaded by a couple
at its free end (see fgure). The length of the beamis L=2.0 m , and the longitudinal normal strain at the top surface is
=0.0010 . The distance from the top surface of the beam to the neutral surface is c =85 mm . (a) Calculate the radius of curvature
, the curvature
, and the vertical deflection
at the end of the beam. (b) If allowable strain
=0.0008 , what is the maximum acceptable depth of the beam？ [Assume that the curvature is unchanged from part(a)]. (c) If allowable strain= 0.0008 , c = 85 mm , and L= 4 m , what is deflection？
A simply supported beam with proportional loading (P=4.1 kN) has span length L=5 m. Load P is 1.2 m from support A and load 2P is 1.5 m from support B. The bending moment just left of load 2P is approximately:
A、9.7 kN·m
B、8.2 kN·m
C、9.1 kN·m
D、10.1 kN·m
A simply supported beam is subjected to a linearly varying distributed load
with maximum intensity
at B. The beam has a length L = 4 m and rectangular cross section with a width of 200 mm and height of 300 mm. Determine the maximum permissible value for the maximum intensity,, if the allowable normal stresses in tension and compression are 120 MPa.
警告：系统检测到您的账号存在安全风险
为了保护您的账号安全，请在“简答题”公众号进行验证，点击“官网服务”-“账号验证”后输入验证码“”完成验证，验证成功后方可继续查看答案！
