The Extending Model of Sandwich Plate for a kind of Double Bottom Structure of Ship Hull

In this paper,according to the need of engineering,Boporkorvcky's physical assumption is extended for calculating thedoudle bottom structure of Ship hull,and a extending model based on three types of typical Sandwich plate,as well as the converted rigidity and variational principles for application,are obtained.It also contains the Simplist conditions of Boporkorvcky's result,but will be more advantageous.