|DESIGN FOR SHOCK LOAD - DEFLECTION AND STRESS GENERATED|
2. Comparison Between Slowly and Suddenly Applied Load
3. Worked Example
Assume a mass of 2kg travelling at 0.5 m/s hits the free end of a 3m long steel cantilever beam which has a cross section 50mm deep (in the direction that the load is travelling) by 60mm wide. Assume E for steel is 200GPa.
Determine the maximum dynamic deflection and stress and what the equivalent drop height is.
To determine the equivalent drop height - use the equation of constant acceleration:
(0.5)2 = 2 x 9.81 x s
s = (0.5)2/2 x 9.81 = 12.7mm
David J Grieve, 1st March 2005.
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