鞍形板多加热线感应加热变形的数值模拟和实验分析  

Numerical Simulation and Experimental Analysis of Induction Heating Deformation of Saddle Plate with Multiple Heating Lines

作　　者：张雪彪 丛明震 ZHANG Xue-biao;CONG Ming-zhen(School of Naval Architecture,Faculty of Vehicle Engineering and Mechanics,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学运载工程与力学学部船舶工程学院,大连116024

出　　处：《武汉理工大学学报》2023年第9期91-95,102,共6页Journal of Wuhan University of Technology

基　　金：国家自然科学基金面上项目(51779043)。

摘　　要：鞍形板是典型的船体双曲度板,为了分析鞍形板多段式焰道感应加热过程的温度和变形特征,建立了感应加热的等效热源模型,并开发了辊弯板多段式感应加热过程的有限元模型。通过实验和数值模拟计算了钢板在单加热线和多加热线情况下的温度和变形,得出在多段焰道的感应加热后,钢板每一段焰道范围内的横向收缩量呈先增大后减小的趋势;对于大尺寸钢板的多加热线变形,钢板各位置处的挠度值的测量值和计算值的平均相对误差为14.34%,表明该有限元分析模型可以应用于鞍形板的变形计算。同时,研究了加热线间距为200 mm情况下多加热线对塑性应变的分布情况,结果显示多加热线对塑性应变的分布没有明显影响。Saddle plate is a typical double curved hull plate.In order to analyze the temperature and deformation characteristics of saddle plate with multi-segment heating path by induction heating process,an equivalent heat source model is established,and a finite element model was developed for roll bending plate by induction heating process.The temperature and deformation of steel plate are calculated by experiments and numerical simulations.The results show that the transverse shrinkage of steel plate in each section of the heating path increases first and then decreases after induction heating process.The average relative error between measured and calculated deflection values is 14.34%,indicating that the finite element analysis model can be applied to the deformation calculation of saddle plate.Meanwhile,the distribution of plastic strain with multiple heating lines at a distance of 200mm is studied,and the results show that multiple heating lines have no obvious effect on the distribution of plastic strain.

关 键 词：水火弯板 鞍形板 感应加热 等效热源 多加热线 

分 类 号：U671.3[交通运输工程—船舶及航道工程]