Studies on the Practical Estimation Method of the Design Loads for Primary Structural Members of Tankers

Practical estimation method of the design loads for primary structural members of bulk carriers

“…These methods are mainly the same as those proposed for primary structural members of tankers in the previous paper [15] and some modifications are made to adapt them for bulk carriers as detailed in Section 4.…”

“…In this paper, the feasibility of applying the practical methods for setting the design loads (design sea states, design regular waves and design loads) proposed by the authors for tanker structures [15] to the primary structural members of bulk carriers has been studied in detail. The findings of and conclusions drawn from the study are:…”

“…proposed for tankers [15] are also applicable to bulk carriers based on the results of a series of direct analyses of the dominant load components using a strip method. A total of twenty-two bulk carriers shown in Table 2 were used in the series calculations.…”

“…Moreover, the authors have also shown that the dominant short-term sea states can be identified with good accuracy using response functions of the specific dominant load components without using stress response functions [15].…”

“…By clarifying the relationship between design sea states (design loads) used in the strength evaluation of structures and the actual sea states likely to be encountered by the ship, the authors have developed practical estimation methods of design sea states for primary structural members of tankers in order to closely link with the rational design and safe operation of ships [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Furthermore, the author have also developed practical estimation methods of design regular waves and design loads resulting in the same level of stresses with that induced in irregular waves under the design sea states [15]. In this paper, practical estimation methods of design loads in which the design sea states, design regular waves and design loads are included for primary structural members of bulk carriers focusing mainly on yielding and buckling strengths for which the maximum loads are critical are proposed following the methods for tankers.…”