FEA Progress report for March 9 Ang Lee March 9, 2020 3/9/2020 1
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FEA Progress report for March 9
Ang Lee
March 9, 2020
3/9/2020 1
Position 1 Stress MPa
The end plate is 30 mm
Above illustration is from Justin Freitag, January 24, 2020 report
3/9/2020 2
Position 2Stress MPa
3/9/2020 3
Position 3 Stress (Mpa)
Two corner points
One point
3/9/2020 4
Position 4 Vertical stress (Mpa)
F=31840 N=3249 Kg
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Position 5 stress MPa
3/9/2020 6
Position 6 (Just before the yellow sling to be picked up )
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Position 7 Stress (MPa)
3/9/2020 8
Discussion
• The frame stress in all 7 cases area (130 MPa) under 1 G load are well below << 355 MPa, Even 2G load are still below the yield stress of 355 MPa
• Weld stress needs to be checked. It is difficult task. So many weld and so many cases. The connection force and moment are extracted from FEA model. The weld stress is calculated according BTH code requirement for Nd=2.4 minium.
3/9/2020 9
BTH requirement for design Catergory A
3/9/2020 10
Weld SIZE width effective width DY1 DX1 DY2 DX2 AREA IXX IYY IZZ Rmax Combine force Sy Su Sa
3.20 2.26 80.00 31.80 86.40 38.20 756.48 696362.60 186966.49 883329.09 47.23 355.00 470 235
absorber Fx Fy Fz Mx My Mz (MPa) Sz_n Sy+Sx_s Smx_n Smy_n Smz_s Sn_sub S_shear Scombined SF
1.00 2362.83 -379.05 -183.64 32262.48 116356.44 -65612.42 0.24 3.16 2.00 11.89 3.51 14.13 6.67 18.25 19.45
2.00 925.65 34.23 -58.02 5124.16 51015.98 3812.87 0.08 1.22 0.32 5.21 0.20 5.61 1.43 6.13 57.93
3.00 2290.47 356.49 -213.15 3918.29 111319.22 57474.44 0.28 3.06 0.24 11.37 3.07 11.90 6.14 15.95 22.25
4.00 2619.95 187.83 176.65 32023.23 -124420.65 -48150.49 0.23 3.47 1.99 -12.71 2.57 -10.49 6.05 14.82 23.95
5.00 800.30 -25.23 -0.75 4338.11 -46906.32 3054.12 0.00 1.06 0.27 -4.79 0.16 -4.52 1.22 4.99 71.11
6.00 2541.07 -152.60 287.06 -211.25 -111217.79 36098.92 0.38 3.37 -0.01 -11.36 1.93 -11.00 5.30 14.32 24.79
7.00 1957.98 362.94 -184.54 29659.31 -99773.77 -58138.58 0.24 2.63 1.84 -10.19 3.11 -8.11 5.74 12.83 27.67
8.00 488.75 -12.81 131.91 2317.57 -11263.05 1941.08 0.17 0.65 0.14 -1.15 0.10 -0.83 0.75 1.54 230.07
9.00 1974.86 -358.09 -224.78 285.63 -98673.23 55679.04 0.30 2.65 0.02 -10.08 2.98 -9.77 5.63 13.80 25.72
10.00 2122.59 -158.50 190.39 26492.99 101017.17 -40718.47 0.25 2.81 1.64 10.32 2.18 12.21 4.99 14.96 23.72
11.00 445.99 8.47 401.54 2188.83 14174.32 1901.71 0.53 0.59 0.14 1.45 0.10 2.11 0.69 2.43 146.08
12.00 2124.17 131.16 288.98 -1390.38 94385.06 33473.81 0.38 2.81 -0.09 9.64 1.79 9.94 4.60 12.74 27.86
Weld SIZE width effective width DY1 DX1 DY2 DX2 AREA IXX IYY IZZ Rmax
diagnal 3.20 2.26 24.15 31.80 28.67 36.32 273.64 34046.45 49815.70 83862.14 23.14
Fx Fy Fz Mx My Mz (MPa) Sz_n Sy+Sx_s Smx_n Smy_n Smz_s Sn_sub S_shear Scombined SF
1.00 1350.56 -662.96 -43.59 20764.97 62017.60 -38991.06 0.16 5.50 11.08 22.61 10.76 33.85 16.26 44.03 8.06
2.00 1192.64 704.06 105.10 -20509.72 56748.70 34131.59 0.38 5.06 10.94 20.69 9.42 32.02 14.48 40.67 8.73
3.00 1159.80 912.51 128.55 -18516.29 44280.42 -19752.49 0.47 5.39 9.88 16.14 5.45 26.49 10.84 32.47 10.93
4.00 1207.09 -898.73 145.27 16893.97 44617.25 20361.13 0.53 5.50 9.01 16.27 5.62 25.81 11.12 32.20 11.02
5.00 1571.30 -1460.81 -11.78 -25191.34 -59505.39 -41471.33 0.04 7.84 13.44 21.70 11.44 35.18 19.28 48.51 7.32
6.00 1598.74 1493.38 36.78 26847.63 -63074.30 40743.08 0.13 8.00 14.32 23.00 11.24 37.45 19.24 50.13 7.08
7.00 950.96 659.72 -158.01 17996.18 -45643.28 -15494.31 0.58 4.23 9.60 16.64 4.28 26.82 8.50 30.60 11.60
8.00 876.75 -725.91 14.58 -18501.06 -46826.69 19543.27 0.05 4.16 9.87 17.07 5.39 27.00 9.55 31.66 11.21
top section of beam lifting
Weld SIZE width effective width DY1 DZ1 DY2 DZ2 AREA IZZ IYY IXX Rmax
3.2 2.2624 62.285 50.8 66.8098 55.3248 532.1608 351962.76 262352.1121 614314.8739 43.3716 SF
Fx Fy Fz Mx My Mz (MPa) Sx_n Sy+Sz_s Smz_n Smy_n Smx_s Sn_sub S_shear Scombined SF
1 -15150.53 10911.00 25.77 -1687.64 7775.42 2869.80 28.47 20.50 0.27 0.82 0.12 29.56 20.62 46.37 7.66
2 -15616.79 -11259.76 27.90 -4005.30 10783.18 -220.91 29.35 21.16 0.02 1.14 0.28 30.50 21.44 48.06 7.39
3 493.45 370.73 32.70 1678.50 -2133.93 6598.43 0.93 0.70 0.63 0.23 0.12 1.78 0.82 2.27 156.13
4 -20.99 33.24 23.12 -3290.00 -1150.49 10045.53 0.04 0.08 0.95 0.12 0.23 1.11 0.31 1.24 287.31
Weld SIZE width effective width DY1 DX1 DY2 DX2 AREA IXX IYY IZZ Rmax
Vertical 3.20 2.26 63.50 31.80 68.02 36.32 451.69 274321.53 101537.40 375858.92 38.56
Fx Fy Fz Mx My Mz (MPa) Sz_n Sy+Sx_s Smx_n Smy_n Smz_s Sn_sub S_shear Scombined SF
1.00 1528.07 191.82 -1567.77 7116.42 -43164.26 76936.65 5.73 5.63 3.80 15.74 21.23 25.26 26.86 52.93 6.71
2.00 1488.87 -324.49 235.90 9772.77 -65458.94 -78614.24 0.86 5.57 5.21 23.87 21.69 29.94 27.26 55.91 6.35
3.00 1289.66 160.19 -1392.81 19727.50 -29476.86 115943.10 5.09 4.75 10.52 10.75 31.99 26.36 36.74 68.88 5.15
4.00 1370.41 -395.85 -183.95 -10814.17 -52893.22 -123381.91 0.67 5.21 5.77 19.28 34.04 25.73 39.26 72.70 4.88
5.00 1531.25 -513.36 -1815.05 21828.98 41452.99 89856.23 6.63 5.90 11.64 15.11 24.79 33.39 30.70 62.78 5.65
6.00 1544.98 725.83 -200.74 -11282.29 69041.45 -91115.84 0.73 6.24 6.02 25.17 25.14 31.92 31.38 63.03 5.63
7.00 1186.09 -160.67 -1215.91 7177.40 30979.19 95417.73 4.44 4.37 3.83 11.29 26.33 19.57 30.70 56.66 6.27
8.00 1225.37 422.28 212.37 9330.60 47901.69 -99574.91 0.78 4.74 4.98 17.46 27.47 23.22 32.21 60.43 5.87
top section thicker plate
Weld SIZE width effective width DY1 DZ1 DY2 DZ2 AREA IZZ IYY IXX Rmax
3.20 2.26 200.00 38.10 204.52 42.62 1118.30 0.00 0.00
Fx Fy Fz Mx My Mz (MPa) Sx_shear Sy+Sz_s Smz_n Smy_n Smx_s Sn_sub S_shear Scombined SF
1.00 31848.00 0.00 0.00 0.00 0.00 0.00 28.48 0.00 0.00 0.00 0.00 28.48 49.33 7.20
Weld stress at the vertical position
3/9/2020 11
Weld SIZE width effective width DY1 DX1 DY2 DX2 AREA IXX IYY IZZ Rmax Combine force Sy Su Sa
3.20 2.26 80.00 31.80 86.40 38.20 756.48 696362.60 186966.49 883329.09 47.23 355.00 470 235
absorber Fx Fy Fz Mx My Mz (MPa) Sz_n Sy+Sx_s Smx_n Smy_n Smz_s Sn_sub S_shear Scombined SF
1.00 2362.83 -379.05 -183.64 32262.48 116356.44 -65612.42 0.24 3.16 2.00 11.89 3.51 14.13 6.67 18.25 19.45
2.00 925.65 34.23 -58.02 5124.16 51015.98 3812.87 0.08 1.22 0.32 5.21 0.20 5.61 1.43 6.13 57.93
3.00 2290.47 356.49 -213.15 3918.29 111319.22 57474.44 0.28 3.06 0.24 11.37 3.07 11.90 6.14 15.95 22.25
4.00 2619.95 187.83 176.65 32023.23 -124420.65 -48150.49 0.23 3.47 1.99 -12.71 2.57 -10.49 6.05 14.82 23.95
5.00 800.30 -25.23 -0.75 4338.11 -46906.32 3054.12 0.00 1.06 0.27 -4.79 0.16 -4.52 1.22 4.99 71.11
6.00 2541.07 -152.60 287.06 -211.25 -111217.79 36098.92 0.38 3.37 -0.01 -11.36 1.93 -11.00 5.30 14.32 24.79
7.00 1957.98 362.94 -184.54 29659.31 -99773.77 -58138.58 0.24 2.63 1.84 -10.19 3.11 -8.11 5.74 12.83 27.67
8.00 488.75 -12.81 131.91 2317.57 -11263.05 1941.08 0.17 0.65 0.14 -1.15 0.10 -0.83 0.75 1.54 230.07
9.00 1974.86 -358.09 -224.78 285.63 -98673.23 55679.04 0.30 2.65 0.02 -10.08 2.98 -9.77 5.63 13.80 25.72
10.00 2122.59 -158.50 190.39 26492.99 101017.17 -40718.47 0.25 2.81 1.64 10.32 2.18 12.21 4.99 14.96 23.72
11.00 445.99 8.47 401.54 2188.83 14174.32 1901.71 0.53 0.59 0.14 1.45 0.10 2.11 0.69 2.43 146.08
12.00 2124.17 131.16 288.98 -1390.38 94385.06 33473.81 0.38 2.81 -0.09 9.64 1.79 9.94 4.60 12.74 27.86
Absorber has 8 weld connections
Weld stress at the vertical position
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Diagnal beam connection
Weld SIZE width effective width DY1 DX1 DY2 DX2 AREA IXX IYY IZZ Rmax
diagnal 3.20 2.26 24.15 31.80 28.67 36.32 273.64 34046.45 49815.70 83862.14 23.14
Fx Fy Fz Mx My Mz (MPa) Sz_n Sy+Sx_s Smx_n Smy_n Smz_s Sn_sub S_shear Scombined SF
1.00 1350.56 -662.96 -43.59 20764.97 62017.60 -38991.06 0.16 5.50 11.08 22.61 10.76 33.85 16.26 44.03 8.06
2.00 1192.64 704.06 105.10 -20509.72 56748.70 34131.59 0.38 5.06 10.94 20.69 9.42 32.02 14.48 40.67 8.73
3.00 1159.80 912.51 128.55 -18516.29 44280.42 -19752.49 0.47 5.39 9.88 16.14 5.45 26.49 10.84 32.47 10.93
4.00 1207.09 -898.73 145.27 16893.97 44617.25 20361.13 0.53 5.50 9.01 16.27 5.62 25.81 11.12 32.20 11.02
5.00 1571.30 -1460.81 -11.78 -25191.34 -59505.39 -41471.33 0.04 7.84 13.44 21.70 11.44 35.18 19.28 48.51 7.32
6.00 1598.74 1493.38 36.78 26847.63 -63074.30 40743.08 0.13 8.00 14.32 23.00 11.24 37.45 19.24 50.13 7.08
7.00 950.96 659.72 -158.01 17996.18 -45643.28 -15494.31 0.58 4.23 9.60 16.64 4.28 26.82 8.50 30.60 11.60
8.00 876.75 -725.91 14.58 -18501.06 -46826.69 19543.27 0.05 4.16 9.87 17.07 5.39 27.00 9.55 31.66 11.21
Weld stress at the vertical position
3/9/2020 13
Connection at the vertical beam
Weld SIZE width effective width DY1 DX1 DY2 DX2 AREA IXX IYY IZZ Rmax
Vertical 3.20 2.26 63.50 31.80 68.02 36.32 451.69 274321.53 101537.40 375858.92 38.56
Fx Fy Fz Mx My Mz (MPa) Sz_n Sy+Sx_s Smx_n Smy_n Smz_s Sn_sub S_shear Scombined SF
1.00 1528.07 191.82 -1567.77 7116.42 -43164.26 76936.65 5.73 5.63 3.80 15.74 21.23 25.26 26.86 52.93 6.71
2.00 1488.87 -324.49 235.90 9772.77 -65458.94 -78614.24 0.86 5.57 5.21 23.87 21.69 29.94 27.26 55.91 6.35
3.00 1289.66 160.19 -1392.81 19727.50 -29476.86 115943.10 5.09 4.75 10.52 10.75 31.99 26.36 36.74 68.88 5.15
4.00 1370.41 -395.85 -183.95 -10814.17 -52893.22 -123381.91 0.67 5.21 5.77 19.28 34.04 25.73 39.26 72.70 4.88
5.00 1531.25 -513.36 -1815.05 21828.98 41452.99 89856.23 6.63 5.90 11.64 15.11 24.79 33.39 30.70 62.78 5.65
6.00 1544.98 725.83 -200.74 -11282.29 69041.45 -91115.84 0.73 6.24 6.02 25.17 25.14 31.92 31.38 63.03 5.63
7.00 1186.09 -160.67 -1215.91 7177.40 30979.19 95417.73 4.44 4.37 3.83 11.29 26.33 19.57 30.70 56.66 6.27
8.00 1225.37 422.28 212.37 9330.60 47901.69 -99574.91 0.78 4.74 4.98 17.46 27.47 23.22 32.21 60.43 5.87
Weld stress at the vertical position
3/9/2020 14
Connection at the top
top section of beam lifting
Weld SIZE width effective width DY1 DZ1 DY2 DZ2 AREA IZZ IYY IXX Rmax
3.2 2.2624 62.285 50.8 66.8098 55.3248 532.1608 351962.76 262352.1121 614314.8739 43.3716
Fx Fy Fz Mx My Mz (MPa) Sx_n Sy+Sz_s Smz_n Smy_n Smx_s Sn_sub S_shear Scombined SF
1 -15150.53 10911.00 25.77 -1687.64 7775.42 2869.80 28.47 20.50 0.27 0.82 0.12 29.56 20.62 46.37 7.66
2 -15616.79 -11259.76 27.90 -4005.30 10783.18 -220.91 29.35 21.16 0.02 1.14 0.28 30.50 21.44 48.06 7.39
3 493.45 370.73 32.70 1678.50 -2133.93 6598.43 0.93 0.70 0.63 0.23 0.12 1.78 0.82 2.27 156.13
4 -20.99 33.24 23.12 -3290.00 -1150.49 10045.53 0.04 0.08 0.95 0.12 0.23 1.11 0.31 1.24 287.31
top section thicker plate
Weld SIZE width effective width DY1 DZ1 DY2 DZ2 AREA IZZ IYY IXX Rmax
3.20 2.26 200.00 38.10 204.52 42.62 1118.30 0.00 0.00
Fx Fy Fz Mx My Mz (MPa) Sx_shear Sy+Sz_s Smz_n Smy_n Smx_s Sn_sub S_shear Scombined SF
1.00 31848.00 0.00 0.00 0.00 0.00 0.00 28.48 0.00 0.00 0.00 0.00 28.48 49.33 7.20
Weld stress at the vertical position
3/9/2020 15
Weld size issue concern
• For the vertical position, All SF seems well above 2.4 BTH requirement under 1 G load.
• However, there is fabrication concern for the 30 mm plate connection with 3.2 mm wall thickness of tubing( see next slide for BTH table for more details). Same case for 12 mm plate locations.
a) Minimum fillet weld size for 30 mm plate is 8 mm.b) Maximum fillet weld size allowed for the tubing is 3.2 mm (wall
thickness)c) That creates the problem for fabrication issue. For the required force to
be transmitted, 3.2 mm should work based on the vertical position calculation
d) What’s solution here ?
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Page 19-page 20
3/9/2020 17
Next step
• The structural frame is more adequate to satisfy the BTH requirement.
• Will hold on the Weld stress for other case until the 30 mm/12 mm with 3.2 mm issue are addressed.
• Move on the big plate connection.
3/9/2020 18
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