一回路系统整体支承结构多保真度力学模型的配型和更新研究  

Multi-fidelity Mechanical Model Matching and Updating of Primary Loop Supporting Structure

作　　者：熊夫睿[1] 张文正[1] 袁志豪 Xiong Furui;Zhang Wenzheng;Yuan Zhihao(Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu,610213,China)

机构地区：[1]中国核动力研究设计院核反应堆系统设计技术重点实验室,成都610213

出　　处：《核动力工程》2023年第3期243-248,共6页Nuclear Power Engineering

摘　　要：反应堆及一回路系统整体支承结构设计需同时满足减振和抗冲击的力学要求,相应地需建立不同保真度的力学模型。首先应用相关性分析,对反应堆及一回路系统整体支承结构多保真度力学模型(包括高保真度力学模型和低保真度力学模型)的静力和动力特性匹配性进行了定量研究;然后应用贝叶斯参数估计方法对低保真度力学模型(简化模型)进行模型更新,以提高其与高保真度力学模型(详细模型)的匹配性。本文所提出的多保真度力学模型间的匹配和单向更新策略为后续结构力学性能多目标优化奠定了基础。The design of reactor primary loop support should meet the vibration reduction and anti-shock requirements.Accordingly,mechanical models with different fidelity should be established.This paper first adopted correlation analysis to quantify the compatibility of static and dynamical characters of multi-fidelity mechanical models(including high-fidelity and low-fidelity models)of the reactor and primary loop supporting structure.Then,Bayesian parameter estimation technique was applied to update the low-fidelity model(simplified model)to increase its compatibility to high-fidelity model(detailed model).The model matching and updating strategy proposed by this paper lays the foundation for future multi-objective optimization of support structure mechanical properties.

关 键 词：多保真度力学模型 模型匹配 参数更新 支承结构 

分 类 号：TL334[核科学技术—核技术及应用]