Journal of South China University of Technology (Natural Science Edition) ›› 2020, Vol. 48 ›› Issue (11): 1-9.doi: 10.12141/j.issn.1000-565X.200039

• Traffic & Transportation Engineering •     Next Articles

Double Iterative Afloat Condition Calculation Method for Convex Polyhedron Composite Structure

LIU Xiao XU Lei FAN Tianhui CHEN Chaohe   

  1. School of Civil and Transportation Engineering，South China University of Technology，Guangzhou 510640，Guangdong，China
  • Received:2020-01-30 Revised:2020-05-07 Online:2020-11-25 Published:2020-11-05
  • Contact: 刘虓(1976-)，男，副教授，主要从事船舶与海洋结构物设计制造研究。 E-mail:liuxiao@scut.edu.cn
  • About author:刘虓(1976-)，男，副教授，主要从事船舶与海洋结构物设计制造研究。
  • Supported by:
    Supported by the National Natural Science Foundation of China (51709118) and the Special Fund for Promo-ting Economic Development of Guangdong Province (Goals Development Marine Economic) (GDME-2018B003)

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Abstract: A new method for calculating the afloat condition of convex polyhedron composite structure was pro-posed． Firstly，the afloat object was meshed by the tetrahedra，and then the water plane equation was calculated by the double iterative method，which consists of the inner and outer iterative procedures simulating the heaving and rotation motions of the afloat object respectively． The afloat condition experiment was carried out for a semi-submersible offshore platform． The algorithm proposed in this paper was also compared with Maxsurf which is the famous computer aided ship design and construction software． The experimental and comparative test results show that the method has clear physical meaning，the corresponding algorithm is accurate and reliable with good conver-gence． This new method is more suitable for analyzing the afloat condition of the convex polyhedron composite structure than the traditional method．

Key words: floating state, convex polyhedron, composite structure, double iteration

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