Self-Organizing Construction Method of Offshore Structures by Cellular Automata Model

Takeshi Ishida

doi:10.1155/2015/140174

Abstract

We propose a new algorithm to build self-organizing and self-repairing marine structures on the ocean floor, where humans and remotely operated robots cannot operate. The proposed algorithm is based on the one-dimensional cellular automata model and uses simple transition rules to produce various complex patterns. This cellular automata model can produce various complex patterns like sea shells with simple transition rules. The model can simulate the marine structure construction process with distributed cooperation control instead of central control. Like living organism is constructed with module called cell, we assume that the self-organized structure consists of unified modules (structural units). The units pile up at the bottom of the sea and a structure with the appropriate shape eventually emerges. Using the attribute of emerging patterns in the one-dimensional cellular automata model, we construct specific structures based on the local interaction of transition rules without using complex algorithms. Furthermore, the model requires smaller communication data among the units because it only relies on communication between adjacent structural units. With the proposed algorithm, in the future, it will be possible to use self-assembling structural modules without complex built-in computers.

Highlights

Most existing marine structures are of floating type, whereas very few are fixed to the seabed, for example, gravity-based platforms, compliant structures, and jacket structures
Using the attribute of emerging pattern in one-dimensional cellular automata, specific structures based on the local interaction of transition rules without using complex algorithms can be constructed
It is thought that structural units with a simple circuit, small memory capacity, and minimum communication functions can build various marine structures on the basis of onedimensional cellular automata

Summary

Introduction

Most existing marine structures are of floating type, whereas very few are fixed to the seabed, for example, gravity-based platforms, compliant structures, and jacket structures. Using the attribute of emerging pattern in one-dimensional cellular automata, specific structures based on the local interaction of transition rules without using complex algorithms can be constructed. We consider the ocean-bed cell state and the structural units are piled up according to the algorithm . This model replaces the time-series pattern of the one-dimensional cellular automata model with the space pattern in the sea. The algorithm to assess the setting of each unit is based on the transition rules of the one-dimensional cellular automata model. Ocean water Structural unit Ocean bed Figure 7: One calculation result This transition rule emerged in “tower” like shape. We use the transition rules that are more appropriate to design a structure

Results

Discussion

Conclusion