摘要
对结构变形重构技术进行了研究,利用基于最小二乘变分原理的逆有限元法对多种案例的船体加筋板结构进行位移重构,研究了逆有限元模型网格对重构误差的影响,通过MPE误差分析验证了逆有限元法的可行性以及对复杂结构的适用性。为了使逆有限元法更具有工程实用性,结合改进的遗传算法为离散测点的数量和位置选择提供了依据,结果表明通过优化测点布置,可以在保持高精度逆有限元重构结果的同时,大量减少逆有限元模型中测点的数量。
Structural deformation reconstruction technique is researched.Based on the least squares variational principle the inverse finite element method is applied to reconstruct the displacement of the ship stiffener in various cases.The effect of the mesh of the inverse finite element model on error of the reconstruction is researched.Feasibility of the inverse finite element method and its applicability in complex structures are verified through error analysis.To make the inverse finite element method more practical,an improved genetic algorithm is applied,which provides a basis for selection of the number and location of discrete measuring points The results show that the number of measurement points in the inverse finite element model can be significantly reduced by optimization of their layout,while maintaining high accuracy of reconstruction results.
作者
闫宏生
白超迪
贾同宇
刘春利
YAN Hongsheng;BAI Chaodi;JIA Tongyu;LIU Chunli(School of Architecture and Engineering,Tianjin University,Tianjin 300072,China;Hebei Local Maritime Bureau,Tianjin 300461,China)
出处
《中国造船》
EI
CSCD
北大核心
2023年第1期168-179,共12页
Shipbuilding of China
关键词
逆有限元法
变形重构
加筋板
改进遗传算法
inverse finite element method
deformation reconstruction
stiffener plate
improved genetic algorithm
