LAT-TD GLAST LAT Project Tracker Inner Shipping Container Analysis and Test Results Tracker Inner Shipping Container Analysis and Test Results August 20, 2003 Michael Opie

LAT-TD GLAST LAT Project Side Drop Qualification and Vertical Lift Proof Test Loads Qualification for side loading due to side drop at 17.6 g Proof test for vertical lift load at 2g

LAT-TD GLAST LAT Project Side Drop Load

LAT-TD GLAST LAT Project Vertical Drop Load

LAT-TD GLAST LAT Project Side Drop Load Simulation Qualification for side loading associated with side drop at 17.6 g 9475 N (2130 lbf)

LAT-TD GLAST LAT Project Side Drop Load Simulation Loading Procedure 7901 N (1776 lbf)9475 N (2130 lbf) Load up to 7901 N without support at the end. Continue loading up to 9475 N with support at the end.

LAT-TD GLAST LAT Project Test predictions: FEM Mesh Node Node Node 90000

LAT-TD GLAST LAT Project Test predictions: Von Mises Stress Stress for load case 2Stress for load case 1 MS = 276/1.4/ = 3.82MS = 276/1.4/ = 4.42

LAT-TD GLAST LAT Project Test predictions: Applied Loads

LAT-TD GLAST LAT Project Test predictions: Applied Loads –Load 1 is applied as an enforced displacement. This produces a force of 7901 N at the center of the container (node 70000) a moment of 2917 N-m at the support (node 90000). –Load 2 is applied as a force of 1728 N at the free end of the container. This increases the load at the center to 9474 N but reduces the moment at the support to 2238 N-m. –These are thus the required load combinations to produce a moment of 2239 N-m at the support, 639 N-m at the center.

LAT-TD GLAST LAT Project Margins of Safety – Side Load LC 1

LAT-TD GLAST LAT Project Margins of Safety – Side Load LC 2

LAT-TD GLAST LAT Project Vertical Lift Load Proof Test The following calculation shows the amount of weight that needs to be added for the proof load of the tracker shipping container vertical lift. Mass of TKR and Base Plate = (31.8 kg kg)*1.10 = 41 kg Mass of Ship Container and Cable Hold. Plate = (27.9 kg kg)*1.10 = 34 kg Additional Mass for 2g lift = 2*(41 kg) + 34 kg = 116 kg = 256 lbf So we need to add an additional 256 lbf for the vertical proof load. Procedure Add 256 lbf (1139 N) of ballast. Perform 4 point lift from corners. Perform 1 point lift from center.

LAT-TD GLAST LAT Project Test predictions: Vertical Lift FEM Mesh

LAT-TD GLAST LAT Project Test predictions: Vertical Lift Von Mises Stress Stress for vertical load case 2Stress for vertical load case 1 MS = 276/1.4/ = 10.9MS = 276/1.4/ = 8.48

LAT-TD GLAST LAT Project Margins of Safety – Vertical Lift LC 1

LAT-TD GLAST LAT Project Margins of Safety – Vertical Lift LC 2

LAT-TD GLAST LAT Project Calculations Showing Helicoil Capability

LAT-TD GLAST LAT Project Minimum Margin of Safety Summary

LAT-TD GLAST LAT Project Side Load Test Results Test equipment weighed 130 lbf. So the target loads where reduced to the following: Load Case 1 = 1646 lbf (7322 N) Load Case 2 = 2000 lbf (8896 N) Actual loads achieved during test where: Load Case 1 = 1725 lbf (7673 N) Load Case 2 = 2150 lbf (9564 N) The test resulted in no anomalies. Test deemed successful.

LAT-TD GLAST LAT Project Cable Holding Plate Mounted to Test Fixture

LAT-TD GLAST LAT Project Displacement Gage to Indicate Slip Relative to Test Fixture

LAT-TD GLAST LAT Project Set-up for Side Load Case 1

LAT-TD GLAST LAT Project Application of Force via Turn-buckle for Side Load Case 1

LAT-TD GLAST LAT Project View from Top

LAT-TD GLAST LAT Project Application of Force via Hydraulic Lift for Side Load Case 2

LAT-TD GLAST LAT Project Vertical Lift Load Test Results Actual added mass simulator load was 260 lbf (1157 N) versus required 256 lbf (1139 N). The test resulted in no anomalies. Test deemed successful.

LAT-TD GLAST LAT Project Proof Test for Vertical Lift Load Case 1

LAT-TD GLAST LAT Project Proof Test for Vertical Lift Load Case 1