... the effect of stiffness distribution, modified VLFSs with nonuniform stiffness and mass distributions are analyzed. Discussions on response reduction by stiffening, setting moon pools and hinge linking are also included. INTRODUCTION Very large floating structures (VLFS) are promising structures for ocean...

... on the dynamic response reductions of an offshore platform subjected to seismic loads are examined using the passive and active control methods. It ir shown that the effective reductions of the response can be implemented with the combinations of the passive control method and the active control method...

... of the structure will be more efficient and reasonable. The passive control and active control methods have recently been applied to dynamic response reduction methods of civil engineering structures such as bulldogs and bridges. The tuned mass damper(TMD) is one of the most typical passive control method...

... frequency and the duration time. It is important to have exact evaluations of dynamic responses to these loads, which are mainly dependent upon some parameters which are determined by sea wave and structural conditions. This system particularly seems to have effective roles on the response reduction...