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Interactive Roark's Formulas Update 7.0.4
Effective Date: Mar 29, 2007
New in IRF update 7.0.4
Additional text was added to the menu descriptions, particularly in areas where cases can be merged.
Plot labels were improved throughout. Redundant equations were added to some cases involving hyperbolic functions to avoid extreme values. For example, if A = sinh(350), B = sinh(400), and C = cosh(400), then A*B/C causes an exponent overflow error because A*B is too large. However, since B/C = tanh(400) = 1, A*B/C = sinh(350) which can be computed. Plates -- Large Deflections: Instead of lumping all the cases into a single model, individual models are now presented and they are more flexible (backsolvable) Some of the cross section properties (distances from the neutral axis) for unequal leg angles were calculated incorrectly in 7.0.2 and have been corrected in 7.0.4.
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