Calculation of Vessel's Geometric Properties Based on STL Model

Authors

Chunlei Liu, Navigation College, Dalian Maritime University, Dalian 116026, China;
Yin Yong, Navigation College, Dalian Maritime University, Dalian 116026, China;
Xiaofeng Sun, Navigation College, Dalian Maritime University, Dalian 116026, China;
Xiufeng Zhang, Navigation College, Dalian Maritime University, Dalian 116026, China;

Abstract

Abstract: To improve the accuracy of the ship geometric properties calculation and the real-performance of the program, a method based on STL triangular mesh model was proposed to calculate the ship geometric properties. SH polygon clipping algorithm in computer graphics was used to calculate the intersection of ship and water plane. By using of coordinates systems affine transformation, 3D water plane was changed to 2D plane to extract the profile contour. Because the waterlines are monotone polygon, Mass center insertion method was proposed to finish polygon triangulation, computing speed was improved. Bulk carrier "Taihang 128" was taken as an example, comparing the calculated results with the data given in loading manual, there is almost no accuracy loss. The results indicate that the proposed method has high accuracy and good real-time performance and has a certain practical application value.

Recommended Citation

Liu, Chunlei; Yong, Yin; Sun, Xiaofeng; and Zhang, Xiufeng (2020) "Calculation of Vessel's Geometric Properties Based on STL Model," Journal of System Simulation: Vol. 27: Iss. 10, Article 6.
Available at: https://dc-china-simulation.researchcommons.org/journal/vol27/iss10/6

First Page

2264

Revised Date

2015-07-24

DOI Link

https://doi.org/

Last Page

2271

CLC

U66.2+1

Recommended Citation

Liu Chunlei, Yin Yong, Sun Xiaofeng, Zhang Xiufeng. Calculation of Vessel's Geometric Properties Based on STL Model[J]. Journal of System Simulation, 2015, 27(10): 2264-2271.