应用数学和力学2025，Vol.46Issue(12)：1515-1526,12.DOI:10.21656/1000-0887.450295
石墨块碰撞模型的理论与参数识别研究
The Theory and Parameter Identification for the Graphite Block Collision Model
摘要
Abstract
The graphite core,as the crucial component of a gas-cooled reactor,may trigger collision due to the gap between components under seismic loads,to affect the safety of the reactor.Studying its collision dynamic characteristics is of great significance for the safety assessment of nuclear engineering.For seismic analysis of nuclear equipment,the whole system is often simplified(such as the modal superposition method)to carry out efficient dynamic calculations,so it is necessary to find a linearized core collision behavior analysis model.The classical L-N collision modeling,the Kelvin collision modeling,and the modeling theory analysis of the linear simplified model were carried out based on the collision behaviors of graphite blocks.Then,the effects of mod-el parameters on its collision behaviors were discussed,and an iterative recognition algorithm for model param-eters was proposed.Finally,a dedicated collision test system for graphite blocks was established.The collision responses under various initial velocities were measured,to enable the statistical analysis of collision character-istics,the parameter identification for the collision model,and the validation of the linear equivalent model.This study can provide an important reference for the seismic analysis model for nuclear equipment containing graphite cores and other collision components.关键词
石墨堆芯/间隙/碰撞模型/参数识别/碰撞试验Key words
graphite core/clearance/collision model/parameter identification/collision experiment分类
数理科学引用本文复制引用
彭星铭,张弛,吴耀祖,兰天宝,罗亚军..石墨块碰撞模型的理论与参数识别研究[J].应用数学和力学,2025,46(12):1515-1526,12.基金项目
国家自然科学基金(12372155) （12372155）
