摘要
船体复杂外板的成型评价是曲面外板成型加工的必要环节,能为外板的二次加工提供依据.结合水火弯板加工工艺,提出了一种成型评价方法.该方法先通过三维空间变换,实现目标曲面与检测曲面的匹配.然后,利用多项式拟合与参数分解方法,实现检测曲面偏差量的分解.最后,给出了成型率的计算方法,实现对检测曲面成型度的评价.实验结果表明,本方法能对复杂外板加工过程中的横向、纵向以及扭向成型情况进行客观的评价,而且本方法的评价指标与加工工艺紧密结合,可作为曲面外板加工参数的推理依据.
The forming evaluation of the complex shtp hull plate is an Important part in the processing of the curved shell plate, which provides the basis for the secondary processing. Combined with the line-heating processing, a forming evaluation method is presented. Firstly, the target surface and the measured surface of the ship hull plate are matched by means of 3D space transformation. Then, the deviation of the measured surface is decomposed by polynomial fitting and parameters decomposition methods. Finally, the calculation method of forming rate is given to evaluate the forming of the measured surface. The experimental results show that this method can objectively evaluate the transverse, longitudinal and torsional forming condition of the complex ship hull plate. In addition, the evaluation indexes of the method are closely integrated with the machining process, which can be used as the basis for the inference of the curved shell plate processing parameters.
出处
《大连理工大学学报》
EI
CAS
CSCD
北大核心
2016年第6期584-588,共5页
Journal of Dalian University of Technology
基金
广东省新兴产业发展专项资助项目(2012A09100013)
广东省应用型科技研发专项资助项目(2015B090922013)
关键词
形状误差
曲面匹配
偏差分解
船体外板
profile error
surface matching
deviation decomposition
ship hull plate
