![]() ![]() $\ai=$ internal cross section area of the stress annulus, given by $\ai = \frac) above.įor chains, neither of the pressure terms apply and the true tension in the chain is the effective tension $\Te$. Note: OrcaFlex uses the stress diameters, not the line type diameters, to calculate ai and ao. ![]() This is assumed to be zero at and above the mean water level below that level it is calculated allowing for the static pressure head due to the instantaneous height difference between the point and the mean water level. $\peei=$ internal pressure, calculated from the contents pressure, allowing for the static pressure head due to the instantaneous height difference between the point and the specified reference Z level. For example, in our normal lay analysis a logical extract would be the flexible top tension. OrcaFlex reports two different types of tension – the effective tension, $\Te$, and the wall tension, $\Tw$. By specifying a limiting value you are setting a limit for the analysis. ![]()
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