氧化铝空心球复掺玄武岩纤维轻骨料混凝土动力学性能

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摘要采用直径100 mm分离式霍普金森压杆试验系统，研究不同应变率下素混凝土（PC）、玄武岩纤维混凝土（BC）、氧化铝空心球混凝土（AC）及玄武岩纤维-氧化铝空心球复合混凝土（BAC）动力学性能，构建动态本构模型。结果表明，应变率提高，4组试件动压强度、峰值应变、均值应变及破碎分形维数增大，应变率效应显著；掺入氧化铝空心球使试件强度及动弹性模量降低，峰值应变及均值应变增大，冲击变形性能增强。基于Sargin非线性弹性静态本构模型，引入率强化因子与骨料弱化因子构建材料的动态本构模型，所得拟合曲线与实测应力应变曲线吻合较好，特征强度与特征应变等基本相同。

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	叶学华1
	许金余1
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	刘俊良2

关键词 ：轻骨料混凝土, 氧化铝空心球, SHPB, 动力学性能, 本构模型

Abstract：采用直径100 mm分离式霍普金森压杆试验系统，研究不同应变率下素混凝土（PC）、玄武岩纤维混凝土（BC）、氧化铝空心球混凝土（AC）及玄武岩纤维-氧化铝空心球复合混凝土（BAC）动力学性能，构建动态本构模型。结果表明，应变率提高，4组试件动压强度、峰值应变、均值应变及破碎分形维数增大，应变率效应显著；掺入氧化铝空心球使试件强度及动弹性模量降低，峰值应变及均值应变增大，冲击变形性能增强。基于Sargin非线性弹性静态本构模型，引入率强化因子与骨料弱化因子构建材料的动态本构模型，所得拟合曲线与实测应力应变曲线吻合较好，特征强度与特征应变等基本相同。

Key words：轻骨料混凝土氧化铝空心球 SHPB 动力学性能本构模型

收稿日期: 2014-12-18 出版日期: 2015-08-25

引用本文:

叶学华1，许金余1,2，刘俊良2. 氧化铝空心球复掺玄武岩纤维轻骨料混凝土动力学性能[J]. 振动与冲击, 2015, 34(16): 207-212.
YE Xue-hua1，XU Jin-yu1,2，LIU Jun-liang2. Dynamic performance of alumina bubble- basalt fiber lightweight aggregate concrete. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(16): 207-212.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2015/V34/I16/207

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