July 20, 2016
Roadmaster Inc.
BlackHawk 2 All-Terrain Tow Bar
(ATM) 10,000 Lbs. (4536 kg)
In accordance with Australian Design Rule 62/02.
Section 14.2.1
Linear Static Test performed utilizing MSCNastran FEA Analysis Software.
Load 1
Longitudinal Tension and Compression (Linear Static)
1.50 x 9.81 m/s² x 4536 kg = 66747 N
(1.50 x 32.17 ft/s² x 310.85 slugs = 15000 Lbs.)
Results
Total Translation / Deformation = 0.00120 m (0.0473 in)
Contour Legend / Solid Von Mises Stress
See view1.bmp
Range / 0 to 255106 kPa (0 to 37000 psi)
Load 2
Transverse Thrust (Linear Static)
0.50 x 9.81 m/s² x 4536 kg = 22249 N
(0.50 x 32.17 ft/s² x 310.85 slugs = 5000 Lbs.)
Results
Total Translation / Deformation = 0.00582 m (0.229 in)
Contour Legend / Solid Von Mises Stress
See view2.bmp
Range / 0 to 255106 kPa (0 to 37000 psi)
Contour Legend Conversions:
psi kPa
26148 1.80 x 105
22576 1.55 x 105
19005 1.30 x 105
15434 1.06 x 105
11863 8.18 x 104
8291 5.71 x 104
4720 3.25 x 104
1149 7.92 x 103
-2422 -1.67 x 104
-5994 -4.13 x 104
-9565 -6.59 x 104
-13136 -9.05 x 104
-16707 -1.15 x 105
-20279 -1.39 x 105
-23850 -1.64 x 105
-27421 -1.89 x 105
-30993 -2.13 x 105
Load 1 Results (Con�t.)
Contour Legend / Solid Von Mises Stress
See VIEW 4 / VIEW 5 / VIEW 6 Click on thumbnail for large view
Range / 6.67 x 105 to 1.39 x 102 kPa (96774 to 20.28 psi)
Contour Legend Conversions:
psi kPa
96774 6.67 x 105
90726 6.25 x 105
84679 5.83 x 105
78632 5.42 x 105
72585 5.00 x 105
66538 4.58 x 105
60491 4.17 x 105
54444 3.75 x 105
48397 3.33 x 105
42350 2.92 x 105
36303 2.50 x 105
30256 2.08 x 105
24209 1.66 x 105
18162 1.25 x 105
12114 8.35 x 104
6067 4.18 x 104
20.28 1.39 x 102
Load 2
Transverse Thrust @ 45? (Linear Static)
0.50 x 9.81 m/s? x 3628.11 kg = 17795.87 N
(0.50 x 32.17 ft/s? x 248.67 slugs = 3999.85 Lbs.)
Results
Total Translation / Deformation = 0.0058 m (0.229 in.)
Contour Legend / Solid Mean Stress
See VIEW 7 / VIEW 8 / VIEW 9 Click on thumbnail for large view
Range / 1.11 x 105 to �1.82 x 105 kPa (16214 to �26479 psi)
Contour Legend Conversions:
psi kPa
16214 1.11 x 105
13546 9.34 x 104
10878 7.50 x 104
8209 5.66 x 104
5541 3.82 x 104
2873 1.98 x 104
204.2 1.40 x 103
-2464 -1.69 x 104
-5132 -3.53 x 104
-7801 -5.37 x 104
-10469 -7.21 x 104
-13137 -9.05 x 104
-15806 -1.08 x 105
-18474 -1.27 x 105
-21142 -1.45 x 105
-23811 -1.64 x 105
-26479 -1.82 x 105
Load 2 Results (Con�t.)
Contour Legend / Solid Von Mises Stress
See VIEW 10 / VIEW 11 / VIEW 12 Click on thumbnail for large view
Range / 7.55 x 105 to 7.21 x 101 kPa (109507 to 10.46 psi)
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