Swing Bolt Calculation for Vertical Filter

1. STRENGTH CALCULATION FOR SLOTTED FLANGE WITH SWING BOLT
Bolt Diameter 5/8 Inch Bolt Size Db = mm
Pin Diameter Dp = mm
Top Bracket Length dT = mm
Top Bracket Width bT = mm
Bottom Bracket Length dB = mm
Bottom Bracket Thickness bB = mm
Pin Hole At Bottom Bracket Dh = mm
Yield Strength of Bracket SA240 Gr 304 Fy(br) = N/mm2
Yield Strength of Weld SA240 Gr 304 Fy(w) = N/mm2
Yield strength of Bolt SA240 Gr 304 Fy(b) = N/mm2
Yield strength of Pin SA240 Gr 304 Fy(p) = N/mm2
Allowable Bending Stress of Bracket, x Fy(br) Fba(br) = N/mm2
Allowable Shear Stress of Bracket, x Fy(br) Fva(br) = N/mm2
Allowable Tensile Stress of Bolt, x Fy(b) Fta(b) = N/mm2
Allowable Shear Stress of Weld, x Fy(w) Fva(w) = N/mm2
Allowable Bending Stress of Pin, x Fy(p) Fba(p) = N/mm2
Allowable Shear Stress of Pin, x Fy(p) Fva(p) = N/mm2
153.75
102.5
21
34
8
14
123
12.881
12.7
205
205
205
102.5
153.75
205
22
102.50.5
0.75
0.5
0.6
0.5
0.75
Top Bracket cross section
dimension is 22 x 21 for
each side
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2. A) Shear Stress For Weld Attachment of Bracket/Shell
Total Operating Bolt Load, WM1 (Read from PV Elite) WM1 = N
Total Number of Bracket & Bolts N(b) =
Operating Bolt Load Per Bracket & Bolt, F(b)=WM1/N(b) F(b) = N
Top Bracket
Total Weld Length Per Set of Bracket L(wtbr) = mm
Fillet Weld Leg Size of Bracket F(wtbr) = mm
Weld Shear Area, A(wtbr)=L(wtbr) xF(wtbr) A(wtbr) = mm2
Shear Stress (Max), Sv(wtbr)=F(b)/A(wtbr) OK Sv(wtbr) = N/mm2
Bottom Bracket
Total Weld Length Per Set of Bracket L(wbbr) = mm
Fillet Weld Leg Size of Bracket F(wbbr) = mm
Weld Shear Area, A(wbbr)=L(wbbr) xF(wbbr) A(wbbr) = mm2
Shear Stress (Max), Sv(wbbr)=F(b)/A(wbbr) OK Sv(wbbr) = N/mm2
B) Bending Stress & Moment For Brackets (Per Set)
Moment Arm For Bracket At Full Bolt Load L(m) = mm
Top Bracket
Neutral Axis For The Set of Bracket y(tbr) = mm
2nd Moment of Area per Set of Bracket, I(tbr)=(bd3
)/12 I(tbr) = mm4
Bending Moment (Max), M(tbr)=F(b) x L(m) M(tbr) = N‐mm
Bending Stress (Max), Sb(tbr)=M(tbr)/[I(tbr)/y(tbr)] OK Sb(tbr) = N/mm2
Bottom Bracket
Neutral Axis For The Set of Bracket y(bbr) = mm
2nd Moment of Area per Set of Bracket, I(bbr)=(bd
3
)/12 I(bbr) = mm4
Bending Moment (Max), M(bbr)=F(b) x L(m) M(bbr) = N‐mm
Bending Stress (Max), Sb(bbr)=M(bbr)/[I(bbr)/y(bbr)] OK Sb(bbr) = N/mm2
C) Shear Stress For The Bottom Bracket Due To Load At Point of Pin Contact
Operating Bolt Load Per Bracket & Bolt, F(b)=WM1/N(b) F(b) = N
Top Bracket
Shear Area For The Bracket, A(tbr) = mm2
Shear Stress (Max), Sv(tbr)=F(b)/A(tbr) OK Sv(tbr) = N/mm2
Bottom Bracket
Shear Area For The Bracket, A(bbr) = mm2
Shear Stress (Max), Sv(bbr)=F(b)/A(bbr) OK Sv(bbr) = N/mm2
924
7.85
136
2
272
26.67
10
10666.67
108830.83
102.03
29021.555
4
7255.39
0
0
0
32.12
544
7255.39
13.34
0.00
15
108830.83
37268.00
11

3. D) Bending Moment, Bending Stress & Shear Stress For Pin Insert Through Bottom Bracket
F1 = F2 =
y= mm
R1 = R2 =
Max Bending Moment, M(p) = F x L M(p) = N‐mm
Neutral Axis For The Pin y = mm
2nd Moment of Area, I(p)=πd
4
/64 I(p) = mm4
Max Bending Stress, Sb(p) = M/(I/y) OK Sb(p) = N/mm2
Shear Stress At Point Of Contact Between Pin And Bracket
Cross section Area of Pin A(p) = mm2
Shear Stress (Max), Sv(p)=F(R1)/[SF x A(p)] SF= 0.5 OK Sv(p) = N/mm2
E) Axial Tension Of Bolt
Root Area of Bolt A(b) = mm2
Shear Stress (Max), St(b)=F(b)/A(b) OK St(b) = N/mm2
F) Load Combination
Top Bracket OK LC(tbr) =
Bottom Bracket OK LC(bbr) =
Pin OK LC(p) = 0.882
55.68
0.794
46.17
6.35
59.66
2.560 2.560
Bracket(bot) Width
0.286
130.313
3627.69 3627.69
1276.98
3627.69 3627.69
6.35
121.610
9285.08
18

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