| 砼受压损伤力学本构模型的研究 |
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| 引用本文： | 董毓利 谢和平. 砼受压损伤力学本构模型的研究[J]. 工程力学, 1996, 13(1): 44-53 |
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| 作者姓名： | 董毓利 谢和平 |
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| 作者单位： | 中国矿业大学，国家教委跨世纪优秀人才专项基金 |
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| 摘 要： | 本文利用ＭＴＳ公司８１５．０２型电液伺服试验系统对砼进行了等应变速率加载控制的应力一应变全曲线试验，应用不可逆热力学和内变量理论的成果建立了砼损伤力学模型，并用概率统计的观点分析了损伤的演化规律。由于考虑了不可逆变形的影响，本文所建本构模型与实验吻合较好。
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| 关 键 词： | 砼，应力—应变全曲线，自由能，内变量，损伤，Weibull分布 |
CONTINUUM DAMAGE MECHANICS CONSTITUTIVE MODEL OF CONCRETE UNDER COMPRESSION |
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| Dong Yuli, Xie Heping, Li Shiping. CONTINUUM DAMAGE MECHANICS CONSTITUTIVE MODEL OF CONCRETE UNDER COMPRESSION[J]. Engineering Mechanics, 1996, 13(1): 44-53 |
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| Authors: | Dong Yuli Xie Heping Li Shiping |
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| Affiliation: | China University of Mining & Technology |
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| Abstract: | in this paper, using MTS815.02 electro-hydraulic servo testing system, the complete process tests of concrete under compression with controlled strain velocity have been done. Based on irreversible thermodynamics and internal variable theory, a new CDM constitutive model of concrete under compression is established, in which the evolution of damage variable follows probability distribution. With the influence of irreversible deformation included,the model is in good agreement with experimental results. |
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| Keywords: | concrete stress-strain curve free energy internal variable damage Weibull distribution |
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