船体梁剖面特性计算中对称映射输入的实现

Symmetrical Mapping of Input Datum in the Calculation of the Sectional Property Parameters for Thin-walled Hull Beam

在大开口船舶弯扭组合强度进行计算过程中,剖面特性计算是一项主要内容。采用中国船级社(CCS)的SCLOS程序系统计算剖面特性时,一般需要对整个剖面进行离散,数据量大,规定复杂。利用剖面的对称性和图形的拓扑原理,实现了只输入一半剖面信息进行全剖面计算的功能,可以大大减小输入数据的工作量和出现差错的可能性。

Calculation of the sectional property parameters is one of the main tasks in the assessment of the bending - torsional strength for the large - deck - opening ships. Because of the factor of direction of the shear - flow, the whole section should be discretized for the calculation with enormous inputting datum and complex specification. The symmetrical feature of the hull section and the principle of topology are utilized to implement mapping the input datum for only one half of the section, so as to reduce the work of data preparation and raise the accuracy of calculation.