基于数字散斑应变测量法的薄板各向异性力学性能研究
系统地说明了采用数字散斑相关法研究薄板各向异性的实验方法和数据处理方法,进而对SPCC钢板和AA6061铝板的各向异性及其演化规律进行了研究。结果表明：散斑应变测量法是一种获取薄板力学性能的有效手段,其最大优点在于能够获得变形过程中的整体应变场,这是研究复杂加载条件下材料力学性能的关键;对于SPCC钢板,其流动应力的各向异性并不严重,但全量和增量形式的Lankford系数（r值和r′值）均表现出了明显的各向异性,且其值随着变形的增加而逐渐降低,这与传统的采用引伸计进行应变测量时只能获得恒定的Lankford系数不同;对于AA6061铝板,其流动应力和r值的各向异性均不明显,但与轧制方向成不同角...
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| Published in | 材料工程 no. 4; pp. 6 - 11 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
西安交通大学材料科学与工程学院,西安,710049%西安交通大学机械工程学院,西安,710049
2012
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-4381 1001-4381 |
| DOI | 10.3969/j.issn.1001-4381.2012.04.002 |
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| Abstract | 系统地说明了采用数字散斑相关法研究薄板各向异性的实验方法和数据处理方法,进而对SPCC钢板和AA6061铝板的各向异性及其演化规律进行了研究。结果表明：散斑应变测量法是一种获取薄板力学性能的有效手段,其最大优点在于能够获得变形过程中的整体应变场,这是研究复杂加载条件下材料力学性能的关键;对于SPCC钢板,其流动应力的各向异性并不严重,但全量和增量形式的Lankford系数（r值和r′值）均表现出了明显的各向异性,且其值随着变形的增加而逐渐降低,这与传统的采用引伸计进行应变测量时只能获得恒定的Lankford系数不同;对于AA6061铝板,其流动应力和r值的各向异性均不明显,但与轧制方向成不同角度试样的伸长率表现出了明显的差异,并且流动应力的加工硬化速率和r′值在拉伸真实应变处于0.15～0.20时出现了剧烈的波动;随着变形的增加,两种薄板应变的各向异性都逐渐增强,SPCC钢板增强得更为明显。 |
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| AbstractList | 系统地说明了采用数字散斑相关法研究薄板各向异性的实验方法和数据处理方法,进而对SPCC钢板和AA6061铝板的各向异性及其演化规律进行了研究。结果表明：散斑应变测量法是一种获取薄板力学性能的有效手段,其最大优点在于能够获得变形过程中的整体应变场,这是研究复杂加载条件下材料力学性能的关键;对于SPCC钢板,其流动应力的各向异性并不严重,但全量和增量形式的Lankford系数（r值和r′值）均表现出了明显的各向异性,且其值随着变形的增加而逐渐降低,这与传统的采用引伸计进行应变测量时只能获得恒定的Lankford系数不同;对于AA6061铝板,其流动应力和r值的各向异性均不明显,但与轧制方向成不同角度试样的伸长率表现出了明显的差异,并且流动应力的加工硬化速率和r′值在拉伸真实应变处于0.15～0.20时出现了剧烈的波动;随着变形的增加,两种薄板应变的各向异性都逐渐增强,SPCC钢板增强得更为明显。 TG386%TB115; 系统地说明了采用数字散斑相关法研究薄板各向异性的实验方法和数据处理方法,进而对SPCC钢板和AA6061铝板的各向异性及其演化规律进行了研究.结果表明:散斑应变测量法是一种获取薄板力学性能的有效手段,其最大优点在于能够获得变形过程中的整体应变场,这是研究复杂加载条件下材料力学性能的关键；对于SPCC钢板,其流动应力的各向异性并不严重,但全量和增量形式的Lank ford系数(r值和r '值)均表现出了明显的各向异性,且其值随着变形的增加而逐渐降低,这与传统的采用引伸计进行应变测量时只能获得恒定的Lankford系数不同；对于AA6061铝板,其流动应力和r值的各向异性均不明显,但与轧制方向成不同角度试样的伸长率表现出了明显的差异,并且流动应力的加工硬化速率和r'值在拉伸真实应变处于0.15～0.20时出现了剧烈的波动；随着变形的增加,两种薄板应变的各向异性都逐渐增强,SPCC钢板增强得更为明显. |
| Author | 张阳 臧顺来 郭翔 梁晋 郭成 |
| AuthorAffiliation | 西安交通大学材料科学与工程学院,西安710049 西安交通大学机械工程学院,西安710049 |
| AuthorAffiliation_xml | – name: 西安交通大学材料科学与工程学院,西安,710049%西安交通大学机械工程学院,西安,710049 |
| Author_FL | LIANG Jin GUO Xiang ZHANG Yang GUO Cheng ZANG Shun-lai |
| Author_FL_xml | – sequence: 1 fullname: ZHANG Yang – sequence: 2 fullname: ZANG Shun-lai – sequence: 3 fullname: GUO Xiang – sequence: 4 fullname: LIANG Jin – sequence: 5 fullname: GUO Cheng |
| Author_xml | – sequence: 1 fullname: 张阳 臧顺来 郭翔 梁晋 郭成 |
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| ClassificationCodes | TG386%TB115 |
| ContentType | Journal Article |
| Copyright | Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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| DOI | 10.3969/j.issn.1001-4381.2012.04.002 |
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| DocumentTitleAlternate | Anisotropy Study of Thin Metallic Sheets with Strain Measurement of Digital Speckle Correlation |
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| EISSN | 1001-4381 |
| EndPage | 11 |
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| Keywords | 数字散斑相关法 各向异性 本构模型 板料 应变测量 |
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| Notes | Method of experiment and data processing using digital speckle correlation method to investigate sheet＇s anisotropy was systematically introduced,then the anisotropy and its evolution of SPCC steel sheet and AA6061 aluminum sheet were researched.The results show that： the speckle strain measuring method is an effective tool to obtain the mechanical properties of sheets,whose greatest advantage is its capability to capture the whole strain field during deformation,and this is key to study mechanical properties of materials under complex loading conditions;for the SPCC steel sheet,the anisotropy of flow stress is not distinct,while the total and incremental Lankford coefficient（r values and r′ values） show obvious anisotropy,moreover its values decrease with the increasing of deformation,which is different with the constant Lankford coefficient by traditional strain measuring using extensometer;for the AA6061 aluminum sheet,the anisotropy of flow stress and r value are not obvious,however,the elongations of spe |
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| PublicationTitle | 材料工程 |
| PublicationTitleAlternate | Journal of Materials Engineering |
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| PublicationYear | 2012 |
| Publisher | 西安交通大学材料科学与工程学院,西安,710049%西安交通大学机械工程学院,西安,710049 |
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| Snippet | 系统地说明了采用数字散斑相关法研究薄板各向异性的实验方法和数据处理方法,进而对SPCC钢板和AA6061铝板的各向异性及其演化规律进行了研究。结果表明：散斑应变测量法是一... TG386%TB115; 系统地说明了采用数字散斑相关法研究薄板各向异性的实验方法和数据处理方法,进而对SPCC钢板和AA6061铝板的各向异性及其演化规律进行了研究.结果表明:散斑应... |
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| SubjectTerms | 各向异性 应变测量 数字散斑相关法 本构模型 板料 |
| Title | 基于数字散斑应变测量法的薄板各向异性力学性能研究 |
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