Article(id=1149735801711407721, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1149735800964825832, articleNumber=1003-3033(2024)11-0146-07, orderNo=null, doi=10.16265/j.cnki.issn1003-3033.2024.11.0188, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1720627200000, receivedDateStr=2024-07-11, revisedDate=1725552000000, revisedDateStr=2024-09-06, acceptedDate=null, acceptedDateStr=null, onlineDate=1752047976185, onlineDateStr=2025-07-09, pubDate=1732723200000, pubDateStr=2024-11-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1752047976185, onlineIssueDateStr=2025-07-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1752047976185, creator=13701087609, updateTime=1752047976185, updator=13701087609, issue=Issue{id=1149735800964825832, tenantId=1146029695717560320, journalId=1146031787341344770, year='2024', volume='34', issue='11', pageStart='1', pageEnd='252', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1752047976008, creator=13701087609, updateTime=1756361988347, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1167830080236565470, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1149735800964825832, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1167830080236565471, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1149735800964825832, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=146, endPage=152, ext={EN=ArticleExt(id=1149735802025980522, articleId=1149735801711407721, tenantId=1146029695717560320, journalId=1146031787341344770, language=EN, title=Structural safety analysis of low background experimental cavity, columnId=1149733269173878863, journalTitle=China Safety Science Journal, columnName=Safety engineering technology, runingTitle=null, highlight=null, articleAbstract=
In order to ensure the normal operation of the low-background experimental chamber and prevent structural collapse,a structural safety analysis was conducted using Abaqus software. Initially,a simplified model of the experimental chamber was established based on the finite element method. This was followed by static load response analysis under extreme conditions,seismic load response simulations,and buckling analyses. Finally,the stress response and buckling critical loads of the oxygen-free copper sections with varying thicknesses were calculated to determine the permissible limit wall thickness of the experimental chamber. The results indicated that,under static pressure,the weakest regions of the chamber were the top of the oxygen-free copper section and the transition area of the circular end cap,with a critical buckling load of 0.307 MPa and a permissible limit wall thickness of 5.1 mm.
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为保障低本底实验腔的正常运行,预防腔体发生坍塌,利用Abaqus软件对实验腔开展结构安全性分析。首先,基于有限元方法建立实验腔简化模型;然后,对其进行极限工况下的静载荷响应分析、地震波载荷响应模拟分析,以及基于线性稳定性理论、弧长法的屈曲分析;最后,计算不同厚度下无氧铜段的应力响应情况和屈曲临界载荷,确定实验腔允许的极限壁厚。结果表明:在受静压时,实验腔最薄弱区域为无氧铜段顶部和圆封头过渡处,发生屈曲的临界载荷为0.307 MPa,允许的极限壁厚为5.1 mm;该低本底实验腔的结构能满足极限工况下的使用需求,验证了实验腔设计的合理性。
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1 西南科技大学 制造科学与工程学院,四川 绵阳 621010)]), AuthorCompany(id=1167816073727451926, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, xref=2, ext=[AuthorCompanyExt(id=1167816073735840535, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, companyId=1167816073727451926, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 College of Physics,Sichuan University,Chengdu Sichuan 610065,China), AuthorCompanyExt(id=1167816073744229144, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, companyId=1167816073727451926, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 四川大学 物理学院,四川 成都 610065)])], figs=[ArticleFig(id=1167816076252423019, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=EN, label=Fig.1, caption=
Overall simplified model, figureFileSmall=KdgBXP5JRasI/DB73ZVp/A==, figureFileBig=424emUu4rHrVXKkTgjf1Hw==, tableContent=null), ArticleFig(id=1167816076327920493, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=CN, label=图1, caption=
整体简化模型, figureFileSmall=KdgBXP5JRasI/DB73ZVp/A==, figureFileBig=424emUu4rHrVXKkTgjf1Hw==, tableContent=null), ArticleFig(id=1167816076395029359, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=EN, label=Fig.2, caption=
Stress nephogram of experimental cavity under static pressure, figureFileSmall=G3FvecOottL2wjJJVNbkeA==, figureFileBig=EBuRc4IfKtFqxECLCaHNIw==, tableContent=null), ArticleFig(id=1167816076470526833, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=CN, label=图2, caption=
实验腔受静压力的应力云图, figureFileSmall=G3FvecOottL2wjJJVNbkeA==, figureFileBig=EBuRc4IfKtFqxECLCaHNIw==, tableContent=null), ArticleFig(id=1167816076554412915, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=EN, label=Fig.3, caption=
Schematic diagram of stress extraction point, figureFileSmall=yRH2Mk2hZwI1egX6pFwiyw==, figureFileBig=0A/Lk6XpcjNClt6wIenjng==, tableContent=null), ArticleFig(id=1167816076613133173, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=CN, label=图3, caption=
应力集中点, figureFileSmall=yRH2Mk2hZwI1egX6pFwiyw==, figureFileBig=0A/Lk6XpcjNClt6wIenjng==, tableContent=null), ArticleFig(id=1167816076671853431, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=EN, label=Fig.4, caption=
Stress variation of four grid schemes, figureFileSmall=TB5kU9pdTTTjJBfgvQ3ZGg==, figureFileBig=9nKfG7Q+bCuPQ7pUIAGB6g==, tableContent=null), ArticleFig(id=1167816076751545209, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=CN, label=图4, caption=
4种网格方案的应力变化, figureFileSmall=TB5kU9pdTTTjJBfgvQ3ZGg==, figureFileBig=9nKfG7Q+bCuPQ7pUIAGB6g==, tableContent=null), ArticleFig(id=1167816076822848379, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=EN, label=Fig.5, caption=
Peak stress of four grid schemes, figureFileSmall=JEdAgYyPShQmut2dbgEsFA==, figureFileBig=2W69TtaRk85cDq21UMdj6g==, tableContent=null), ArticleFig(id=1167816076940288894, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=CN, label=图5, caption=
4种网格方案的峰值应力, figureFileSmall=JEdAgYyPShQmut2dbgEsFA==, figureFileBig=2W69TtaRk85cDq21UMdj6g==, tableContent=null), ArticleFig(id=1167816076994814848, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=EN, label=Fig.6, caption=
Variation of stress at extraction point, figureFileSmall=Z1X3PUom/fYZr6I4VQAHRw==, figureFileBig=NKtzaqSo0WedfcqXlUU+sg==, tableContent=null), ArticleFig(id=1167816077066118017, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=CN, label=图6, caption=
提取点的应力变化情况, figureFileSmall=Z1X3PUom/fYZr6I4VQAHRw==, figureFileBig=NKtzaqSo0WedfcqXlUU+sg==, tableContent=null), ArticleFig(id=1167816077137421187, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=EN, label=Fig.7, caption=
Stress contour diagram of the eigenvalue buckling analysis of oxygen-free copper segment, figureFileSmall=rIBccyFgu99Lwtau/k/J7g==, figureFileBig=2g2VE5wqTQZAqZd/s1kZ6A==, tableContent=null), ArticleFig(id=1167816077196141445, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=CN, label=图7, caption=
无氧铜段特征值屈曲分析应力云图, figureFileSmall=rIBccyFgu99Lwtau/k/J7g==, figureFileBig=2g2VE5wqTQZAqZd/s1kZ6A==, tableContent=null), ArticleFig(id=1167816077254861703, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=EN, label=Fig.8, caption=
Stress contour diagram of nonlinear buckling analysis of oxygen-free copper section, figureFileSmall=rCFm/h5O42nWJ3iWRv0Fjg==, figureFileBig=1pJv6Rrzp/4L9fnmzSanVg==, tableContent=null), ArticleFig(id=1167816077309387657, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=CN, label=图8, caption=
无氧铜段非线性屈曲分析应力云图, figureFileSmall=rCFm/h5O42nWJ3iWRv0Fjg==, figureFileBig=1pJv6Rrzp/4L9fnmzSanVg==, tableContent=null), ArticleFig(id=1167816077372302219, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=EN, label=Fig.9, caption=
Radial displacement-external pressure load ratiofactor of oxygen-free copper section, figureFileSmall=aQ7FGpVlb45yuWTvT/V0sw==, figureFileBig=UQySZ4iUl5BW0M4Hvr02aQ==, tableContent=null), ArticleFig(id=1167816077439411085, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=CN, label=图9, caption=
无氧铜段的径向位移-外压载荷比例因子, figureFileSmall=aQ7FGpVlb45yuWTvT/V0sw==, figureFileBig=UQySZ4iUl5BW0M4Hvr02aQ==, tableContent=null), ArticleFig(id=1167816077498131343, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=EN, label=Fig.10, caption=
Maximum Critical pressure /equivalent stress at different thicknesses, figureFileSmall=6SvrluHFnsKJLAXq0kyKbw==, figureFileBig=JwlNVig7mETXM0U0V9Cu2A==, tableContent=null), ArticleFig(id=1167816077569434513, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=CN, label=图10, caption=
不同厚度下的最大临界压力/等效应力, figureFileSmall=6SvrluHFnsKJLAXq0kyKbw==, figureFileBig=JwlNVig7mETXM0U0V9Cu2A==, tableContent=null), ArticleFig(id=1167816077632349075, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=EN, label=Table 1, caption=
Main material properties of experimental cavity
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| 材料性能 | 无氧铜 | SUS304 |
| 密度/(g·cm-3) | 8.94 | 7.93 |
| 抗拉强度/MPa | 196 | 520 |
| 屈服强度/MPa | 81 | 205 |
| 弹性模量/GPa | 115 | 194.02 |
| 泊松比 | 0.34 | 0.3 |
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实验腔主要材料性能
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| 材料性能 | 无氧铜 | SUS304 |
| 密度/(g·cm-3) | 8.94 | 7.93 |
| 抗拉强度/MPa | 196 | 520 |
| 屈服强度/MPa | 81 | 205 |
| 弹性模量/GPa | 115 | 194.02 |
| 泊松比 | 0.34 | 0.3 |
), ArticleFig(id=1167816077753983895, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=EN, label=Table 2, caption=
Computational model and method
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| 分析情况 | 分析对象 | 网格 | 分析方法 |
| 外压模拟 | 无氧铜段 | Shell | 静力学 |
| 地震模拟 | 整体 | Solid | 隐式动力学 |
| 屈曲分析 | 无氧铜段 | Shell | 线性/非线性分析 |
), ArticleFig(id=1167816077821092761, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=CN, label=表2, caption=
计算模型和方法
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| 分析情况 | 分析对象 | 网格 | 分析方法 |
| 外压模拟 | 无氧铜段 | Shell | 静力学 |
| 地震模拟 | 整体 | Solid | 隐式动力学 |
| 屈曲分析 | 无氧铜段 | Shell | 线性/非线性分析 |
), ArticleFig(id=1167816077951116186, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=EN, label=Table 3, caption=
Comparison of existing simulations and experiments
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| 案例 | 1[12] | 2[13] | 3[14] |
| 计算平台 | Abaqus | Abaqus | Ansys |
| 模型 | 圆筒壳体 | 圆筒壳体 | 圆筒壳体 |
| 计算方法 | 弧长法 | 弧长法 | 弧长法 |
| 案例 | 1[12] | 2[13] | 3[14] |
| 临界载荷计算值/MPa | 135.08 | 48.7 | 31.35 |
| 临界载荷试验值/MPa | 139.39 | 53.4 | 28.7 |
| 误差/% | 3.1 | 8.8 | 8.44 |
| 平均误差/% | 6.78 |
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现有仿真和试验对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 案例 | 1[12] | 2[13] | 3[14] |
| 计算平台 | Abaqus | Abaqus | Ansys |
| 模型 | 圆筒壳体 | 圆筒壳体 | 圆筒壳体 |
| 计算方法 | 弧长法 | 弧长法 | 弧长法 |
| 案例 | 1[12] | 2[13] | 3[14] |
| 临界载荷计算值/MPa | 135.08 | 48.7 | 31.35 |
| 临界载荷试验值/MPa | 139.39 | 53.4 | 28.7 |
| 误差/% | 3.1 | 8.8 | 8.44 |
| 平均误差/% | 6.78 |
), ArticleFig(id=1167816078118888350, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=EN, label=Table 4, caption=
Calculation result evaluation MPa
, figureFileSmall=null, figureFileBig=null, tableContent=
| 分析情况 | 最大等效应力/ 最大压力 | 许用应力/ 许用压力 | 是否 合格 |
| 静压力模拟 | 16.35 | 54 | 是 |
| 地震模拟P1 | 77.29 | 136 | 是 |
| 地震模拟P2 | 75.20 | 是 |
| 无氧铜段 | 0.2 | 0.307 | 是 |
), ArticleFig(id=1167816078198580128, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149735801711407721, language=CN, label=表4, caption=
计算结果评定
, figureFileSmall=null, figureFileBig=null, tableContent=
| 分析情况 | 最大等效应力/ 最大压力 | 许用应力/ 许用压力 | 是否 合格 |
| 静压力模拟 | 16.35 | 54 | 是 |
| 地震模拟P1 | 77.29 | 136 | 是 |
| 地震模拟P2 | 75.20 | 是 |
| 无氧铜段 | 0.2 | 0.307 | 是 |
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