计及日照温差作用的坐坞舰船结构响应分析

Structural response analysis of docking naval ship accounting for temperature variation due to sunshine

[目的]由于坐墩、日照温度变化等因素的影响,水面舰船在建造和维修期间将产生整体和局部的响应与变形,一方面影响船体的建造精度和安全性,另一方面还将影响相关武备系统的标定与校准。[方法]考虑日照温差的影响,基于有限元法开展坐坞舰船结构响应与变形分析方法研究。[结果]以一型水面舰船为例,根据墩木布置原则建立全船坐坞有限元模型,并根据现场实测温度数据,完成了日照温差作用下坐坞舰船结构响应与变形预报,计算结果揭示了舰船坐坞期间出现“荷叶变形”现象的原因。[结论]研究成果对于坐坞状态下舰船舰载武器系统和航空保障系统的校准具有重要参考价值。

[Objectives]Due to such factors as docking and temperature due to sunshine exposure,overall and partial response and deformation will occur during the construction and maintenance of surface vessels.On the one hand,it will affect the construction accuracy and safety of the hull,and on the other,it will affect the calibration of the relevant maintenance system.[Methods]In this paper,based on the finite element method,research on the structural response and deformation analysis method of a docking ship is carried out while taking into account the influence of temperature difference caused by sunshine.[Results]A finite element model is created for the entire hull of a docked surface ship according to the principles of docking block arrangement.According to the measured temperature data,the structural response and deformation prediction of the docked ship under the temperature difference of sunshine is carried out.The calculation results reveal the reason behind the phenomenon of“lotus leaf deformation”in docked vessels.[Conclusions]The results of this study are of valuable reference value for the calibration of shipborne weapon systems and aviation support systems in a docked state.