Structural Requirement

Abstract

The basic challenge faced by the naval architect is to assess the uncertain loads that are coming on the structure. The solution to the structural requirement is not unique. It will have multiple solutions. One needs to figure out which one will be the most optimum one. A ship in a seaway experiences various kinds of motions causing dynamic loading on the ship structures. Along with this it is also subjected to static loading due to the self weight of the hull structure, cargo load, loading due to various machineries and equipment, buoyancy forces, etc. Thus it becomes an extremely challenging task to work out a structural solution satisfying this complex loading condition. All the loads coming on a ship structure on a seaway may be referred to as service loads. The response to these service loads is taken care of through four distinct strength considerations, longitudinal strength, transverse strength, torsional strength, local strength. Therefore the structural requirement calls for satisfying these four strength considerations and thereby takes care of the effect of service loads.