CostCal7.xls is based on an IMech. E Proceedings paper by K.Henry, and work by Lai Min and K.Goh, Monash. Power Bond Graphs can model this hydraulic system for its dynamic response in time. Click on this image to view a power bond graph . The following sites are good examples of sources of engineering information, most having useful links to other sites.
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Colby Mannesmann Dematic - similar business to Dexion. Innovators in engineering and manufacturing systems.