轴系校中计算是船舶推进轴系设计、制造、安装及检验的理论依据，对轴系的校中质量及其运转性能具有重要影响。本文综合运用梁变形微分方程和奇异函数，推导出了不同校中方案下轴系剪力、弯矩、截面转角、挠曲度等状态参数的表达式，并通过理论建模对直线校中和负荷校中2种方案下的实船轴系进行了校中计算与结论分析。研究表明该计算方法快速简洁，并能满足实际工程需要，为实船轴系校中方案的选取及评估提供了理论参考。
The alignment calculation of shafting is theoretical basis for the design, manufacture, installtion and inspection of vessel's propulsion shafting, which has important influence on alignment quality and operation performance of shafting. Based on the research of differential equations for beam deformation and singularity functions, the expressions of shear fore, bending moment, sectional angle and deflection under different alignment proposals are deduced in the paper, then through theoretical modeling, the alignment calculation and conclusion analysis of ship shafting under straight line alignment and load alignment are carried out. The results show that the method is more quick and concise, and can meet the needs of practical engineering. Thus it may provide a theoretical reference for the selection and evaluation of alignment proposals of ship shafting.
2019,41(6): 71-75 收稿日期：2018-01-05
DOI：10.3404/j.issn.1672-7649.2019.06.015
分类号：U664.2
作者简介：王建午(1994-),男,硕士研究生,研究方向为舰船动力装置振动与噪声控制
参考文献：
[1] 刘玉君, 张生俊, 汪骥. 考虑工艺要求的船舶推进轴系校中改进算法研究[J]. 中国造船, 2017, 58(2):138-144 LIU Yu-jun, ZHANG Sheng-jun, WANG Ji. Research on improved algorithm of ship alignment with consideration of technical requirements[J]. Shipbuiding of China, 2017, 58(2):138-144
[2] 周瑞平. 超大型船舶推进轴系校中理论研究[D]. 武汉:武汉理工大学, 2005. ZHOU Rui-ping. The theoretic studies on the proplusion shafting alignment of ultra-large vessels[D]. Wuhan:Wuhan University of Technology, 2005.
[3] 李冬梅. 船舶轴系动态校中三弯矩方程的应用[J]. 舰船科学技术, 2017, 39(8):73-75 LI Dong-mei. The application of three moment equation in dynamic alignment of ship shafting[J]. Ship Science and Technology, 2017, 39(8):73-75
[4] YANG Yong, TANG Wen-yong, CHE Chi-dong. Shafting alignment based on improved three-moment method with hydrodynamic simulation for twin propulsion systems[J]. Journal of Ship Mechanics, 2013, 17(9):1038-1052
[5] 张辉, 陈嘉伟, 封海宝. 船舶轴系校中计算中优化算法的应用[J]. 船舶工程, 2017, 39:41-42+87 ZHANG Hui, CHEN Jia-wei, FENG Hai-bao. Optimization algorithm application on marine shafting alignment calculation[J]. Ship Engineering[J], 2017, 39:41-42+87
[6] 尤国英, 杜尚林, 顾忠明, 等. 有限元法用于船舶轴系校中计算[J]. 舰船科学技术, 2009, 31(8):60-62+66 YOU Guo-ying, DU Shang-ming, GUI Xiao-chun, et al. Application of FEM in ship shafting alignment[J]. Ship Science and Technology, 2009, 31(8):60-62+66
[7] 冷坳坳. 舰船推进轴系校中技术研究[D]. 武汉:武汉理工大学, 2015. LENG Ao-ao. Research on the proplusion shaft alignment technology for warships[D]. Wuhan:Wuhan University of Technology, 2015.
[8] 金蓉. 工程力学[M]. 大连:大连海事大学出版社, 2012.
[9] 徐斌. 高层建筑分析奇异函数法[M]. 北京:科学出版社, 2009.
[10] FALSONE G. The use of generalised function in the discontinuous beam bending differential equations[J]. Int.J.Engng Ed, 2002, 18(3):337-344
[11] CB/Z 338-2005, 船舶推进轴系校中[S].
