Article(id=1149780472265405291, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149780466032669506, articleNumber=null, orderNo=null, doi=10.12404/j.issn.1671-1815.2403703, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1716048000000, receivedDateStr=2024-05-19, revisedDate=1736697600000, revisedDateStr=2025-01-13, acceptedDate=null, acceptedDateStr=null, onlineDate=1752058626475, onlineDateStr=2025-07-09, pubDate=1744041600000, pubDateStr=2025-04-08, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1752058626475, onlineIssueDateStr=2025-07-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1752058626475, creator=13701087609, updateTime=1752058626475, updator=13701087609, issue=Issue{id=1149780466032669506, tenantId=1146029695717560320, journalId=1146123166801305609, year='2025', volume='25', issue='10', pageStart='3969', pageEnd='4395', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1752058624990, creator=13701087609, updateTime=1768456644259, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1218558743898411553, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149780466032669506, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1218558743898411554, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149780466032669506, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=4265, endPage=4273, ext={EN=ArticleExt(id=1149780472693224303, articleId=1149780472265405291, tenantId=1146029695717560320, journalId=1146123166801305609, language=EN, title=CSC Format Global Matrix Storage Algorithm Considering Constraints, columnId=1156262729917780302, journalTitle=Science Technology and Engineering, columnName=Papers·Architectural Science, runingTitle=null, highlight=null, articleAbstract=
In order to improve the efficiency of finite element analysis and reduce memory consumption, the storage algorithm of the overall matrix was studied. The constraints were uniformly processed as matrix partitions at the element level. Subsequently, taking the stiffness matrix as an example, the distribution pattern of non-zero elements under the constrained condition was determined. A calculation method and corresponding formulas suitable for the number of non-zero elements in the stiffness matrix of two-dimensional and three-dimensional finite elements were proposed, and the correctness was verified. The correspondence between one-dimensional equal bandwidth storage and the original square matrix address was deduced, and it was applied as an auxiliary array in the process of integrating the overall matrix in CSC format, which has improved the efficiency of the overall matrix assembly and avoided the difficulty of node numbering optimization. Finally, the correctness and practicability of the proposed algorithm were verified by using thefour-span single-line girder bridge in the Changdao section of the Fangshan Line in Beijing. The results show that the overall matrix assembly time is reduced by 30%, the storage space is saved by more than 68%, and the calculation efficiency of linear equations is improved by more than 71% while ensuring the calculation accuracy.
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为了提高有限元分析效率,减少内存消耗,对总体矩阵的存储算法进行研究。将约束条件统一处理为单元层面的矩阵分块,后续以刚度矩阵为例,确定了约束条件下刚度矩阵非零元素分布规律,并提出了适用于二维、三维有限元刚度矩阵非零元素数量计算方法及相应计算公式,同时检验了正确性;推导了一维等带宽存储与原始方阵地址对应关系,并将其作为辅助数组应用于CSC格式总体矩阵集成过程中,提高了总体矩阵组集效率,避免了节点编号优化难题。最后,以北京市房山线长稻区间四跨单线梁桥验证所提出算法的正确性与实用性,结果表明:该算法分析时总体矩阵组集时间减少30%、存储空间节省68%以上、保证了计算精度的同时线性方程组计算效率提升超过71%。
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董正方(1980—),男,汉族,河南滑县人,博士,教授。研究方向:有限元软件;桥梁抗震。E-mail:dzf@henu.edu.cn。
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董正方(1980—),男,汉族,河南滑县人,博士,教授。研究方向:有限元软件;桥梁抗震。E-mail:dzf@henu.edu.cn。
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1 School of Civil Engineering and Architecture, Henan University, Kaifeng 475004, China), AuthorCompanyExt(id=1218525109569114630, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, companyId=1218525109548143109, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 河南大学建筑工程学院, 开封 475004)]), AuthorCompany(id=1218525109661389328, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, xref=2, ext=[AuthorCompanyExt(id=1218525109665583633, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, companyId=1218525109661389328, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 Department of bridge engineering, Tongji University, Shanghai 200092, China), AuthorCompanyExt(id=1218525109673972243, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, companyId=1218525109661389328, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 同济大学桥梁工程系, 上海 200092)])], figs=[ArticleFig(id=1218525113209770843, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=EN, label=Fig.1, caption=
Eight-node hexahedral element model, figureFileSmall=g8bTN1P3X0pYGz1RfFdE3w==, figureFileBig=VJi7hsIUBxl2Ql7U6YmB6Q==, tableContent=null), ArticleFig(id=1218525113356571497, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=CN, label=图1, caption=
八节点六面体单元模型, figureFileSmall=g8bTN1P3X0pYGz1RfFdE3w==, figureFileBig=VJi7hsIUBxl2Ql7U6YmB6Q==, tableContent=null), ArticleFig(id=1218525113474012021, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=EN, label=Fig.2, caption=
Different element connection model, figureFileSmall=0gX4F5gCrLHwSip8saqXkA==, figureFileBig=1nS1DdHzAOCauseadvFc0g==, tableContent=null), ArticleFig(id=1218525113562092410, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=CN, label=图2, caption=
不同单元连接模型, figureFileSmall=0gX4F5gCrLHwSip8saqXkA==, figureFileBig=1nS1DdHzAOCauseadvFc0g==, tableContent=null), ArticleFig(id=1218525113692115846, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=EN, label=Fig.3, caption=
Equiband width storage, figureFileSmall=nUzHgPebotO5V6Vn3/rCzQ==, figureFileBig=H9O8Ji7eOrUdvhxuAKaTJg==, tableContent=null), ArticleFig(id=1218525113872470925, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=CN, label=图3, caption=
等带宽存储, figureFileSmall=nUzHgPebotO5V6Vn3/rCzQ==, figureFileBig=H9O8Ji7eOrUdvhxuAKaTJg==, tableContent=null), ArticleFig(id=1218525113985717146, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=EN, label=Fig.4, caption=
Equibandwidth storage element location mapping, figureFileSmall=s3hkCpWZkQW1yiLK3lutTg==, figureFileBig=Q+QvPOacMl64P0alTwby9Q==, tableContent=null), ArticleFig(id=1218525114115740581, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=CN, label=图4, caption=
等带宽存储元素位置对应关系, figureFileSmall=s3hkCpWZkQW1yiLK3lutTg==, figureFileBig=Q+QvPOacMl64P0alTwby9Q==, tableContent=null), ArticleFig(id=1218525114342233006, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=EN, label=Fig.5, caption=
Matrix A and CSC storage format, figureFileSmall=lIPBEGRMxckCillvgHdQkA==, figureFileBig=mCQVD6gvdzKvvS5YIEnfZQ==, tableContent=null), ArticleFig(id=1218525114472256440, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=CN, label=图5, caption=
矩阵A及CSC储存格式, figureFileSmall=lIPBEGRMxckCillvgHdQkA==, figureFileBig=mCQVD6gvdzKvvS5YIEnfZQ==, tableContent=null), ArticleFig(id=1218525114572919740, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=EN, label=Fig.6, caption=
Diagram of finite element model, figureFileSmall=K6ZOMKNpzXZyyDCgHcHXCg==, figureFileBig=pRuFymKn+GdZG5oSMnvTxg==, tableContent=null), ArticleFig(id=1218525114661000132, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=CN, label=图6, caption=
有限元模型示意图, figureFileSmall=K6ZOMKNpzXZyyDCgHcHXCg==, figureFileBig=pRuFymKn+GdZG5oSMnvTxg==, tableContent=null), ArticleFig(id=1218525114774246351, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=EN, label=Fig.7, caption=
E1 earthquake acceleration time history, figureFileSmall=2M/N5HYTiaiupFZks+Z9Bg==, figureFileBig=bxBMSeVxSaCwllWqrqBLCQ==, tableContent=null), ArticleFig(id=1218525114862326743, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=CN, label=图7, caption=
E1地震加速度时程, figureFileSmall=2M/N5HYTiaiupFZks+Z9Bg==, figureFileBig=bxBMSeVxSaCwllWqrqBLCQ==, tableContent=null), ArticleFig(id=1218525114975572960, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=EN, label=Fig.8, caption=
Comparison of computational efficiency of different group set methods, figureFileSmall=c1TLN0KOPPsMbhdRjnEAkQ==, figureFileBig=ujB3vk1uVarDJdJhMPcdRg==, tableContent=null), ArticleFig(id=1218525115101402090, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=CN, label=图8, caption=
不同组集方法计算效率对比, figureFileSmall=c1TLN0KOPPsMbhdRjnEAkQ==, figureFileBig=ujB3vk1uVarDJdJhMPcdRg==, tableContent=null), ArticleFig(id=1218525115202065389, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=EN, label=Fig.9, caption=
Comparison of memory usage of different storage methods, figureFileSmall=isSQuXfTHCRJCREfLkJxyA==, figureFileBig=bpReuE7kXuUaX/bteCW4Qw==, tableContent=null), ArticleFig(id=1218525115315311605, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=CN, label=图9, caption=
不同存储方法内存占用对比, figureFileSmall=isSQuXfTHCRJCREfLkJxyA==, figureFileBig=bpReuE7kXuUaX/bteCW4Qw==, tableContent=null), ArticleFig(id=1218525115432752129, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=EN, label=Fig.10, caption=
Comparison of solution time of different storage methods, figureFileSmall=cwssy52iJf0/W3EBhRi+3w==, figureFileBig=1OZpHvdgnEtd3NVz4ynjug==, tableContent=null), ArticleFig(id=1218525115550191620, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=CN, label=图10, caption=
不同存储方法求解时间对比, figureFileSmall=cwssy52iJf0/W3EBhRi+3w==, figureFileBig=1OZpHvdgnEtd3NVz4ynjug==, tableContent=null), ArticleFig(id=1218525115646660621, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=EN, label=Fig.11, caption=
2# pier top displacement calculation result curve, figureFileSmall=1IT45FPbafvY7ja4JJYGkA==, figureFileBig=SJJWSb4eo6+hAUPa5helqQ==, tableContent=null), ArticleFig(id=1218525115743129622, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=CN, label=图11, caption=
2#墩顶位移计算结果曲线, figureFileSmall=1IT45FPbafvY7ja4JJYGkA==, figureFileBig=SJJWSb4eo6+hAUPa5helqQ==, tableContent=null), ArticleFig(id=1218525115839598621, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=EN, label=Table1, caption=
Constraint forms and their handling methods
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| 类型 | 主要形式 | 处理方式 |
Dirichlet 边界[17] | 固定约束 | 直接消去法 |
| 指定位移 | 对角元素改1,其他元素置0 |
地震动 作用 | 地震作用的施加 (一致激励、非一致激励、 人工边界地震动输入) | 本质上是一种运动着的边界约束条件,直接代入计算 |
主从 约束 | 单级约束, (刚性约束、柔性约束) | 将从节点特性转换到主节点上[18-19],通常使用罚函数法[20]、拉格朗日乘子法[21] |
| 多级约束[18], |
| 时变系数约束 |
非线性 约束 | 大位移大变形问题, | 转换为单级主从约束方程;使用罚函数法、拉格朗日乘子法处理等[22-24] |
| 曲线或曲面滑动支承, |
| 接触碰撞问题 |
), ArticleFig(id=1218525115961233443, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=CN, label=表1, caption=
约束形式及其处理方式
, figureFileSmall=null, figureFileBig=null, tableContent=
| 类型 | 主要形式 | 处理方式 |
Dirichlet 边界[17] | 固定约束 | 直接消去法 |
| 指定位移 | 对角元素改1,其他元素置0 |
地震动 作用 | 地震作用的施加 (一致激励、非一致激励、 人工边界地震动输入) | 本质上是一种运动着的边界约束条件,直接代入计算 |
主从 约束 | 单级约束, (刚性约束、柔性约束) | 将从节点特性转换到主节点上[18-19],通常使用罚函数法[20]、拉格朗日乘子法[21] |
| 多级约束[18], |
| 时变系数约束 |
非线性 约束 | 大位移大变形问题, | 转换为单级主从约束方程;使用罚函数法、拉格朗日乘子法处理等[22-24] |
| 曲线或曲面滑动支承, |
| 接触碰撞问题 |
), ArticleFig(id=1218525116091256876, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=EN, label=Table 2, caption=
Parameter values of the model
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | N | 单元 | Yi | Di | Gi | ni(i-1) | | |
| 1 | 1 | 1 | 24 | 23 | 1 | — | — | — |
| 2 | 2 | 1 | 24 | 23 | 1 | 12 | 12 | 1 |
| | 2 | 24 | 22 | 2 | | | |
), ArticleFig(id=1218525116225474604, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=CN, label=表2, caption=
模型各参数取值
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | N | 单元 | Yi | Di | Gi | ni(i-1) | | |
| 1 | 1 | 1 | 24 | 23 | 1 | — | — | — |
| 2 | 2 | 1 | 24 | 23 | 1 | 12 | 12 | 1 |
| | 2 | 24 | 22 | 2 | | | |
), ArticleFig(id=1218525116347109427, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=EN, label=Table 3, caption=
Parameter values of the model
, figureFileSmall=null, figureFileBig=null, tableContent=
| N | 单元 | Yi | Di | Gi | ni(i-1) | | |
| 3 | 1 | 3 | 3 | 0 | 4 4 | 3 3 | 1 1 |
| 2 | 6 | 5 | 1 |
| 3 | 8 | 6 | 2 |
), ArticleFig(id=1218525116460355639, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=CN, label=表3, caption=
模型各参数取值
, figureFileSmall=null, figureFileBig=null, tableContent=
| N | 单元 | Yi | Di | Gi | ni(i-1) | | |
| 3 | 1 | 3 | 3 | 0 | 4 4 | 3 3 | 1 1 |
| 2 | 6 | 5 | 1 |
| 3 | 8 | 6 | 2 |
), ArticleFig(id=1218525116565213245, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=EN, label=Table 4, caption=
The first phase implements the process
, figureFileSmall=null, figureFileBig=null, tableContent=
| 第一阶段: |
1.初始化 1-1.初始化KII块、value_KII[ ]、row_KII[ ]、 col.height_KII[Di]、Band_KII[off,Number]; 1-2.临时变量Num初始化为0。(记录元素位置)。 |
2.遍历E0(1,1,NE) 2-1.获取当前单元ELEM(E0)i; 2-2.获取当前单元独立自由度个数Di及相应KII子块; 2-3.判断单元是否循环完毕,若循环完毕,集成结束;若循环没有完毕,进入操作3。 |
3.遍历KII子块 3-1.获取子块矩阵元素value、row、col; 3-2.判断row是否小于col,若小于进行3-3,若大于返回3-1; 3-3.计算off=UBW(i-1)+j-i+1,并判断off是否存在于Band_KII[off,Number]中,若存在,根据off索引出Number,将value_KII[Number]进行数值叠加;若不存在,存储相应数据:value_KII[Num]、row_KII[Num]=row、col.height_KII[col]++、 Band_KII[off,Number](默认第一次遍历不存在,直接存储即可)。 |
| 4.单元循环完毕,返回操作操作2 |
), ArticleFig(id=1218525116678459461, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=CN, label=表4, caption=
第一阶段实现流程
, figureFileSmall=null, figureFileBig=null, tableContent=
| 第一阶段: |
1.初始化 1-1.初始化KII块、value_KII[ ]、row_KII[ ]、 col.height_KII[Di]、Band_KII[off,Number]; 1-2.临时变量Num初始化为0。(记录元素位置)。 |
2.遍历E0(1,1,NE) 2-1.获取当前单元ELEM(E0)i; 2-2.获取当前单元独立自由度个数Di及相应KII子块; 2-3.判断单元是否循环完毕,若循环完毕,集成结束;若循环没有完毕,进入操作3。 |
3.遍历KII子块 3-1.获取子块矩阵元素value、row、col; 3-2.判断row是否小于col,若小于进行3-3,若大于返回3-1; 3-3.计算off=UBW(i-1)+j-i+1,并判断off是否存在于Band_KII[off,Number]中,若存在,根据off索引出Number,将value_KII[Number]进行数值叠加;若不存在,存储相应数据:value_KII[Num]、row_KII[Num]=row、col.height_KII[col]++、 Band_KII[off,Number](默认第一次遍历不存在,直接存储即可)。 |
| 4.单元循环完毕,返回操作操作2 |
), ArticleFig(id=1218525116787511372, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=EN, label=Table 5, caption=
The second phase implements the process
, figureFileSmall=null, figureFileBig=null, tableContent=
| 第二阶段: |
1.初始化 1-1.临时变量N初始化为0。(记录循环次数);初始化 [ ]、 [ ]、 [Di+1]。 |
2.遍历 [off,Number] 2-1.获取当前off对应的编号Number; 2-2.获取 [Number]、 [Number]; 2-3. [N]= [Number]、 [N]= [Number];判断N是否小于Di+1,若小于,将 [Di]的前N个数值进行叠加并赋值给数组 [N+1]。 2-4.变量N++,返回操作2-1。 |
), ArticleFig(id=1218525116883980373, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=CN, label=表5, caption=
第二阶段实现流程
, figureFileSmall=null, figureFileBig=null, tableContent=
| 第二阶段: |
1.初始化 1-1.临时变量N初始化为0。(记录循环次数);初始化 [ ]、 [ ]、 [Di+1]。 |
2.遍历 [off,Number] 2-1.获取当前off对应的编号Number; 2-2.获取 [Number]、 [Number]; 2-3. [N]= [Number]、 [N]= [Number];判断N是否小于Di+1,若小于,将 [Di]的前N个数值进行叠加并赋值给数组 [N+1]。 2-4.变量N++,返回操作2-1。 |
), ArticleFig(id=1218525117026586717, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=EN, label=Table 6, caption=
The maximum response to an earthquake
, figureFileSmall=null, figureFileBig=null, tableContent=
| 位置 | OpenSees/ cm | CSC存储/ cm | 变带宽存 储/cm | 误差1/ % | 误差2/ % |
| 0#墩顶 | 1.079 30 | 1.079 00 | 1.079 00 | 0.027 0 | 0.027 0 |
| 1#墩顶 | 1.079 10 | 1.079 07 | 1.079 07 | 0.002 7 | 0.002 7 |
| 2#墩顶 | 1.081 44 | 1.081 41 | 1.081 41 | 0.002 7 | 0.002 7 |
| 3#墩顶 | 1.084 60 | 1.084 57 | 1.084 57 | 0.002 7 | 0.002 7 |
| 4#墩顶 | 1.102 53 | 1.102 48 | 1.102 48 | 0.004 5 | 0.004 5 |
), ArticleFig(id=1218525117131444324, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780472265405291, language=CN, label=表6, caption=
地震作用下的最大反应
, figureFileSmall=null, figureFileBig=null, tableContent=
| 位置 | OpenSees/ cm | CSC存储/ cm | 变带宽存 储/cm | 误差1/ % | 误差2/ % |
| 0#墩顶 | 1.079 30 | 1.079 00 | 1.079 00 | 0.027 0 | 0.027 0 |
| 1#墩顶 | 1.079 10 | 1.079 07 | 1.079 07 | 0.002 7 | 0.002 7 |
| 2#墩顶 | 1.081 44 | 1.081 41 | 1.081 41 | 0.002 7 | 0.002 7 |
| 3#墩顶 | 1.084 60 | 1.084 57 | 1.084 57 | 0.002 7 | 0.002 7 |
| 4#墩顶 | 1.102 53 | 1.102 48 | 1.102 48 | 0.004 5 | 0.004 5 |
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