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FLAT CIRCULAR PLATES / CONSTANT THICKNESS Roark, 5th Edition Table 24 pg 334 a 2.400 in radius to outer edge Check plate bending with several models b 0.880 in radius to inner edge from Roark and Young page 334 ro 1.600 in radius to location of w APPROXIMATE RADIUS OF BOLT HEAD P 42.90 k For allowable P allowed working calculated in the Bolt Group Pullout template trib length 10.05 in ALONG EDGE OF WASHER a 2.400 w 4267 lb/in point load / circumference line load ro 1.600 2 q_uniform 2371 lb/in uniformly distributed load r_
1.00 in
t v E
1.000 in 0.285 unit 29000 ksi
ro / r
1.600
radial location of evaluated quantity
0.40 0.148945
C_3' C_3'' C_3
1.14 -0.87 0.024992
row 20
b 0.880
thickness of plate poisson ratio Young's modulus of elasticity
CONSTANTS........................... C_1' 0.24 0.42 C_1 0.658320 unit C_2' C_2
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FLAT CIRCULAR PLATES / CONSTANT THICKNESS -- Continued Roark Table 24, Case 2k: Outer edge free, inner edge simply supported… page 342 INPUTS FROM ABOVE a 2.400 in radius to outer edge b 0.880 in radius to inner edge ro 1.600 in radius to location of w q_uniform
2371 lb/in2
uniformly distributed load
not used in this analysis
thickness of plate Poisson ratio Young's modulus of elasticity
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FLAT CIRCULAR PLATES / CONSTANT THICKNESS -- Continued Values from above for Roark Table 24, Case 1a page …. 362 a 2.4 in radius to outer edge ro 1.6 in radius to location of w q 2371 lb/in^2 t v E
1 in 0.285 unit 29000000 psi
thickness of plate poisson ratio Young's modulus of elasticity
Roark, Table 24 Case 10a: Outer edge simply supported … page 363 ya 0 per Roark
Figure 28-8 PLATE BENDING DIAGRAM supported edge
Mra
simply supported edge
L_11 L_17 yc
0 0.000 0.045 -0.0005 in
from above from above -q * a4 /(2 * D) * (L_17 /(1 + v) - 2 * L_11) -2,371 * 2.400^4 /(2 * 2,630,314) * ( 0.04514 /(1 + 0.285) - 2 * 0.00044) deflection at center of plate
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