Estimation of initial manufacturing cost of structural bodies based on their geometric shapes considering relationship of outer curved plates and inner structural members
Large Structures such as offshore structures and ships are required of a very complicated production process, so it can be usefully utilized to know needed information in advance. If a production difficulty is analyzed in the initial design phase, the optimal design result considering production cost can be derived through various design. In this study, it is emphasized to present quantitatively information on production cost by calculating computation index of initial production cost of offshore structures with geometrical shapes. A index that estimates a production difficulty of outer curved plates and inner stiffener of structures is developed and a comprehensive production cost index is deduced by analyzing index correlation between hull plates and inner stiffener. Production cost of outer curved plates and inner stiffener according to form changes is calculated and diverse design verification is performed in the initial design phase through calculated production cost.