Solar LED lights
Date:2011-05-16 12:02
Status:Be resolved
Question:admin
r the safety factor of 1.3, F = 1.3 730 = 949N. Therefore, M = F 1.545 = 949 1.545 = 1466N.m. According to mathematical deduction, annular sliding surface resistance moment W = (3r2 +3 r2 + 3). Above formula, r is the ring diameter, is the ring width. Failure surface resistance moment W = (3r2 +3 r2 + 3) = (3 842 4 +3 84 42 +43) = 88768mm3 = 88.768 10-6 m3 wind load in the destruction of the surface effect of moment due to stress = M / W = 1466 / (88.768 10-6) = 16.5 106pa = 16.
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