Stiffening of a shock lab test chassis
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modify a chassis to significantly reduce the deflection of a critical specimen mounting plate
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Stiffening of a shock lab test chassis
- 1. REDUCE A SHOCK PULSE DEFLECTION IN A LAB LIGHT WEIGHT CHASSIS REV A 2/6/18 D. BLANCHET 3B ASSOCIATES 23 ROCKY HILL RD. BURLINGTON, MA 01803 781-272-7057 DWB3298@OUTLOOK.COM PREPARED FOR: MEECH CORP. LTD OTTAWA ONTARIO CA
- 2. BREADBOARD TEST CHASSIS – WELDED CONSTRUCTION 8X8X1 INCH PERF STEEL Fixed Mounting points 4 places Direction of shock pulse
- 3. DEFLECTION RESULTS BASELINE DESIGN 9.46 E-04 INCHES CRITICAL INSTRUMENT MOUNTING PLATE
- 4. DEFLECTION RESULTS MODIFIED DESIGN: NON PERFORATED CRITICAL MOUNTING PLATE 9.57 E-05 INCHES
- 5. MAX STRESS RESULT 2898 PSI YIELD POINT 89,000 PSI NO DAMAGE EXPECTED
- 6. CONCLUSIONS • A simple change from perforated to solid steel on the main support plate results on a maximum deflection reduction of 10X. • A simply supported load deflection test on the 2 support plate designs can easily verify these results.