水火弯板工艺参数和角变形关系的有限元分析  

Finite element analysis of the relation between heating parameters and angular deformation by line heating

作　　者：张雪彪[1] 纪卓尚[1] 刘玉君[1] 邓燕萍[1] 

机构地区：[1]大连理工大学船舶工程系,辽宁大连116023

出　　处：《船舶力学》2008年第4期607-618,共12页Journal of Ship Mechanics

基　　金：国家863计划资助项目(2001AA421200)

摘　　要：对于完全采用水火弯板成形船体板的情况,根据要加工形成的角变形量给出合适的工艺参数是水火弯板成形系统必须解决的问题。为了确定工艺参数,必须探索加热条件和角变形之间的关系。为此,文章提出了利用小板的变形来研究大板变形情况的相似性规律,并且用体功率模型来综合地考虑火焰速度、火焰有效功率、火焰作用半径和钢板厚度对角变形所引起的综合作用。基于这些分析方法,利用三维有限元法分析热源气体流量和热源速度对于不同厚度钢板的成形关系。It is essential to decide the reasonable heating pure line heating. To decide these heating parameters, the parameters for ship hull plate forming system by relation between heating parameters and angular deformation must be clarified. For this purpose, this paper explores the similarity rule with small plate replacing big plate as FEM calculation specimen,and proposes volume power model of heat source to consider the complicated compositive effect of torch velocity, flame effective power, torch radius and plate thickness.Based on these analysis methods,the relation between heating parameters value of combustion gas flow,heating velocity and angular deformation for different thickness plates is analyzed with three dimensional finite element method.

关 键 词：船体板 水火弯板 角变形 相似性 体功率 

分 类 号：U663.2[交通运输工程—船舶及航道工程]