砂岩Holmquist-Johnson-Cook模型参数确定

TD315; HJC模型在混凝土动态破坏数值模拟中应用广泛,但由于模型中包含参数较多,确定参数需要大量实验,目前缺乏准确可信的岩石材料HJC模型参数.为合理确定砂岩HJC模型参数,对取自四川威远的粉砂岩进行相关静力学实验,获得岩石的弹性模量、泊松比、单轴抗压强度以及抗拉强度等参数.应用三轴压缩实验和单轴SHPB冲击实验,分别得到了该砂岩极限面参数、率效应参数、压力参数和损伤模型参数的取值.基于上述模型参数利用有限元程序LS-DYNA对粉砂岩SHPB冲击实验进行数值模拟,结果表明,实验和模拟的应力-应变曲线形态吻合较好,模拟得到的动态峰值强度和峰值应变与实验结果的平均误差均未超过10％,验证了该...

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Published in煤炭学报 Vol. 43; no. 8; pp. 2211 - 2216
Main Authors 凌天龙, 吴帅峰, 刘殿书, 梁书锋, 李晨, 马建会
Format Journal Article
LanguageChinese
Published 中国矿业大学(北京)力学与建筑工程学院,北京,100083%中国水利水电科学研究院,北京,100038 01.08.2018
Subjects
SHPB
砂岩
数值模拟
HJC模型
实验测试
Online AccessGet full text
ISSN0253-9993
DOI10.13225/j.cnki.jccs.2017.1305

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Abstract TD315; HJC模型在混凝土动态破坏数值模拟中应用广泛,但由于模型中包含参数较多,确定参数需要大量实验,目前缺乏准确可信的岩石材料HJC模型参数.为合理确定砂岩HJC模型参数,对取自四川威远的粉砂岩进行相关静力学实验,获得岩石的弹性模量、泊松比、单轴抗压强度以及抗拉强度等参数.应用三轴压缩实验和单轴SHPB冲击实验,分别得到了该砂岩极限面参数、率效应参数、压力参数和损伤模型参数的取值.基于上述模型参数利用有限元程序LS-DYNA对粉砂岩SHPB冲击实验进行数值模拟,结果表明,实验和模拟的应力-应变曲线形态吻合较好,模拟得到的动态峰值强度和峰值应变与实验结果的平均误差均未超过10％,验证了该HJC模型参数实验测定方法的合理性和有效性.
AbstractList TD315; HJC模型在混凝土动态破坏数值模拟中应用广泛,但由于模型中包含参数较多,确定参数需要大量实验,目前缺乏准确可信的岩石材料HJC模型参数.为合理确定砂岩HJC模型参数,对取自四川威远的粉砂岩进行相关静力学实验,获得岩石的弹性模量、泊松比、单轴抗压强度以及抗拉强度等参数.应用三轴压缩实验和单轴SHPB冲击实验,分别得到了该砂岩极限面参数、率效应参数、压力参数和损伤模型参数的取值.基于上述模型参数利用有限元程序LS-DYNA对粉砂岩SHPB冲击实验进行数值模拟,结果表明,实验和模拟的应力-应变曲线形态吻合较好,模拟得到的动态峰值强度和峰值应变与实验结果的平均误差均未超过10％,验证了该HJC模型参数实验测定方法的合理性和有效性.
Author 吴帅峰
凌天龙
马建会
梁书锋
李晨
刘殿书
AuthorAffiliation 中国矿业大学(北京)力学与建筑工程学院,北京,100083%中国水利水电科学研究院,北京,100038
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Author_FL LING Tianlong
LIU Dianshu
WU Shuaifeng
LIANG Shufeng
MA Jianhui
LI Chen
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DocumentTitle_FL Determination of Holmquist-Johnson-Cook model parameters for sandstone
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砂岩
数值模拟
HJC模型
实验测试
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Snippet TD315; HJC模型在混凝土动态破坏数值模拟中应用广泛,但由于模型中包含参数较多,确定参数需要大量实验,目前缺乏准确可信的岩石材料HJC模型参数.为合理确定砂岩HJC模型参数,...
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Title 砂岩Holmquist-Johnson-Cook模型参数确定
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