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01. The distance
from the top surface of the beam to the neutral surface is 75 mm.
Calculate the radius of curvature , the curvature , and the vertical
deflection at the end of the beam.
Solution 5.4-4 Cantilever beam
A
B
M0
L
L length of beam
L 1.5 m max 0.001
k
1
r
0.
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Problem 5.7-2 A tall signboard is supported by two vertical
beams consisting of thin-walled, tapered circular tubes (see
figure). For purposes of this analysis, each beam may be
represented as a cantilever AB of length L 8.0 m subjected
to a lateral load P 2.4 kN at the free end. The tubes h
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Solution 4.3-12 Beam with trapezoidal load
266 CHAPTER 4 Shear Forces and Bending Moments
Reactions
RA 65kN
RB 55kN
RARB12 (50 30 kNm) (3 m) 0 kNm
©FVERT 0
c
(20 kNm)(3 m)(12)(2 m) 0
©MB0 RA(3 m) (30 kNm)(3 m)(1.5 m)
Free-body diagram of section CB
Point
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01 radians at the ends.
Calculate the height h of the beam if the maximum bending stress is
90 MPa and the modulus of elasticity is 200 GPa. (Hint: Use the formulas
of Example 9-1.)
Solution 9.3-2 Simple beam (uniform load)
max 10 mm A B 0.01 rad
max 90 MPa E 200 GPa
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Problem 7.2-10 Solve the preceding problem if the normal
and shear stresses acting on the element are x 2100 kPa,
y 300 kPa, and xy560 kPa, and the seam is oriented
at an angle of 22.5° to the element (see figure).
Solution 7.2-10 Plane stress (angle )
430 CHAPTER 7 Analysis of Stress
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05) > 피부(0.01)
*예탁선량당량(committed dose equivalent) : 방사성 동위원소 또는 방사성 의약품을 체내로 섭 취하였을 경우 50년간 어떤 조직이나 장기가 받게될 총 선량당량
[최대허용농도, MPC, maximum permissible concentration]
: 체내 섭취량이 최대 허
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