921A 钢纯剪切帽状试件绝热剪切变形的数值模拟

921A 钢纯剪切帽状试件绝热剪切变形的数值模拟

李继承, 陈小伟, 陈刚

文章导航 > 爆炸与冲击 > 2010 > 30(4): 361-369

李继承, 陈小伟, 陈刚. 921A 钢纯剪切帽状试件绝热剪切变形的数值模拟[J]. 爆炸与冲击, 2010, 30(4): 361-369. doi: 10.11883/1001-1455(2010)04-0361-09

引用本文:

李继承, 陈小伟, 陈刚. 921A 钢纯剪切帽状试件绝热剪切变形的数值模拟[J]. 爆炸与冲击, 2010, 30(4): 361-369. doi: 10.11883/1001-1455(2010)04-0361-09

LI Ji-cheng, CHEN Xiao-wei, CHEN Gang. Numericalsimulationsonadiabaticsheardeformationsof921Asteelpureshearhat-shapedspecimens[J]. Explosion And Shock Waves, 2010, 30(4): 361-369. doi: 10.11883/1001-1455(2010)04-0361-09

Citation:

LI Ji-cheng, CHEN Xiao-wei, CHEN Gang. Numericalsimulationsonadiabaticsheardeformationsof 921Asteelpureshearhat-shapedspecimens[J]. Explosion And Shock Waves, 2010, 30(4): 361-369. doi: 10.11883/1001-1455(2010)04-0361-09

李继承, 陈小伟, 陈刚. 921A 钢纯剪切帽状试件绝热剪切变形的数值模拟[J]. 爆炸与冲击, 2010, 30(4): 361-369. doi: 10.11883/1001-1455(2010)04-0361-09

引用本文:

李继承, 陈小伟, 陈刚. 921A 钢纯剪切帽状试件绝热剪切变形的数值模拟[J]. 爆炸与冲击, 2010, 30(4): 361-369. doi: 10.11883/1001-1455(2010)04-0361-09

LI Ji-cheng, CHEN Xiao-wei, CHEN Gang. Numericalsimulationsonadiabaticsheardeformationsof921Asteelpureshearhat-shapedspecimens[J]. Explosion And Shock Waves, 2010, 30(4): 361-369. doi: 10.11883/1001-1455(2010)04-0361-09

Citation:

LI Ji-cheng, CHEN Xiao-wei, CHEN Gang. Numericalsimulationsonadiabaticsheardeformationsof 921Asteelpureshearhat-shapedspecimens[J]. Explosion And Shock Waves, 2010, 30(4): 361-369. doi: 10.11883/1001-1455(2010)04-0361-09

921A 钢纯剪切帽状试件绝热剪切变形的数值模拟

doi: 10.11883/1001-1455(2010)04-0361-09

1.
中国工程物理研究院总体工程研究所,四川绵阳621900

通讯作者:
陈小伟

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出版历程
- 刊出日期: 2010-07-25

Numericalsimulationsonadiabaticsheardeformationsof 921Asteelpureshearhat-shapedspecimens

1.
InstituteofStructuralMechanics,ChinaAcademyofEngineeringPhysics,

More Information

Corresponding author: CHEN Xiao-wei

摘要: 结合相关实验,通过一系列基于921A 钢纯剪切帽状试件的SHPB数值模拟,研究试件的绝热剪切行为,分析试件内绝热剪切带(ASB)的产生、发展以及相应的试件温度场分布。研究发现:ASB是通过剪切区两端高温高应变的不稳定区域的扩展而形成;ASB的扩展速率与加载速率相关;在本文加载速率范围内,ASB带宽无明显变化,均为约70m,基本与所设计的试件剪切区宽度一致;且对应所有加载速率,ASB 均为形变带。
- 固体力学 /
- 绝热剪切 /
- 有限元 /
- 纯剪切帽状试件 /
- SHPB /
- 921A钢
Abstract: IntegratedwithrelativeSHPBtests,theadiabaticsheardeformationofspecimenisobservedbasedonaseriesofnumericalsimulationsofSHPBtestusing921Asteelpureshearhat- shaped specimens.Theinitiationandthepropagationofanadiabaticshearband(ASB)andtherelativedistributionoftemperaturefieldinthespecimenareanalyzed. ItisfoundthatASBisformedasthespread ofanunstablezonewithhightemperatureandhighstraininthetwoendsofshearzone.Thespread speedofanASBisrelatedtotheloadingrate,whilstthewidthofASBisnearlyindependentofthe loadingrate,andequalstoabout70m,i.e.,thewidthofthedesignedshearzone.AlltheASBsare deformedbandscorrespondingtovariousvaluesoftheloadingrate.
- solidmechanics /
- adiabaticsheardeformation /
- finiteelement /
- pureshearhat-shapedspecimen /
- SHPB /
- 921Asteel

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