재료역학7판04-01_chap

소개글

재료역학7판04-01_chap에 대한 보고서 자료입니다.

목차

없음

본문내용

Solution 4.3-12 Beam with trapezoidal load
266 CHAPTER 4 Shear Forces and Bending Moments
Reactions
RA 65kN
RB 55kN
RARB12 (50 30 kN
m) (3 m) 0 kN
m
©FVERT  0

c
 (20 kN
m)(3 m)(12)(2 m) 0
©MB0
RA(3 m)  (30 kN
m)(3 m)(1.5 m)
Free-body diagram of section CB
Point C is at the midpoint of the beam.

FVERT 0 c T
55kN0
M (30 kN/m)(1.5 m)(0.75m)
(55 kN)(1.5m) 0
M45.0 kN
m
12(10 kN
m)(1.5 m)(0.5 m)
©MC0

V2.5 kN
V (30 kN
m)(1.5 m) 12
(10 kN
m)(1.5 m)
A B
50 kN/m
30 kN/m
3 m
RA RB
B
V
40 kN/m
30 kN/m
1.5 m
55 kN
M C
Problem 4.3-13 Beam ABCD represents a reinforced-concrete
foundation beam that supports a uniform load of intensity q1  3500 lb/ft
(see figure). Assume that the soil pressure on the underside of the beam is
uniformly distributed with intensity q2.
(a) Find the shear force VB and bending moment MB at point B.
(b) Find the shear force Vm and bending moment Mm at the midpoint
of the beam.

키워드

재료,   역학,   재료역학,   재료역학7판04-01_chap