冲击载荷下防甩件动态响应试验和数值分析研究
Test and numerical simulation analysis of the anti-whipping restraint subjected to impact loads
刘浪 1孟阿军 1石媛媛 2彭建2
作者信息
- 1. 西安交通大学 航天航空学院,西安 710049;西安交通大学复杂服役环境重大装备结构强度与寿命全国重点试验室,西安 710049;核电安全技术与装备全国重点试验室,广东深圳 518172;深圳中广核工程设计有限公司,广东深圳 518172
- 2. 核电安全技术与装备全国重点试验室,广东深圳 518172;深圳中广核工程设计有限公司,广东深圳 518172
- 折叠
摘要
为研究防甩件的抗甩击性能,开展了防甩件在轴向冲击载荷作用下的动态响应试验研究和数值分析,并在数值分析方法中,考虑了防甩件材料在不同冲击载荷条件下应变率效应的影响.研究结果表明,本文选用的防甩件具有良好的吸能防甩限制能力,此外,数值分析结果与轴向冲击试验动态响应结果吻合较好,加速度峰值误差小于10%,充分验证了在类似蜂窝套管状防甩件数值分析中,考虑材料应变率效应的Cowper-Symonds黏塑性材料本构模型数值分析方法的有效性.该方法为防甩件抗甩击性能设计提供了更准确、更快捷的分析手段,并有效降低设计分析成本.
Abstract
In order to study the anti-whipping performance of anti-whipping restraints,experimental research and numerical analysis were conducted on the dynamic response of anti-whipping restraints under axial impact loads,and the strain rate effect of anti-whipping restraint materials under different impact load conditions in the numerical analysis method was considered.The research results show that the anti-whipping restraints selected in this study have good energy absorption and anti-whipping limiting ability.In addition,the numerical analysis results used in this study are in good agreement with the dynamic response results of axial impact tests with a peak acceleration deviation of less than 10%,which fully verifies the effectiveness of the numerical analysis method of Cowper-Symonds viscoelastic material constitutive model that considers material strain rate effects in numerical analysis of honeycomb sleeve shaped anti-whipping restraints.This method provides a more accurate and faster analysis method for the design of anti-whipping performance of anti-whipping restraints and can effectively reduce design analysis costs.
关键词
核电厂/管道断裂/防甩件/冲击试验/应变率效应/数值仿真分析Key words
nuclear power plant/pipe rupture/anti-whipping restraint/impact test/strain-rate effect/numerical simulation analysis引用本文复制引用
基金项目
国家重点研发计划项目(2018YFB1900200)
出版年
2024
国家科技期刊平台
NSTL
万方数据