See also the STA CHAINLENGTH Catenary Calculator. STA possesses the experience, knowledge, and resources your organization needs for success. Stewart Technology Associates has yielded impressive results in this area with its clients, and this is due not only to decades of experience, skill, and dedication, but also to the fact that we utilize only the most robust software in Orcaflex by Orcina. Another example cable dynamics example can be seen at CRANE BOOM RECOIL. High quality marine and offshore technology consultancy can be expected when working with STA, and this is especially the case when it comes to cable dynamics. With steel (mass density of slings = 40.39 kg/m) the cable dynamics is small amplitude and no galloping occurs. A comparison can quickly be made with steel cables, as they have the same geometry and approximately the same elastic axial stiffness (AE value) but seven times greater mass density. The diagram indicates that cable dynamics are likely to be significant. Note the sling mass density, m = 5.77 kg/m. The following properties can be controlled: normal, lateral and axial stiffnesses damping lateral and axial friction coefficients. Key inputs and initial VIV calculations are shown in the table above. Using analysis methods laid out in FHWA-RD-05-083, 2007, for cable-stayed bridges, an Excel tool for calculating the VIV and Galloping of Dry Inclined Cables was developed by Bil Stewart.
