THE RESEARCH DEVELOPMENTS OF DYNAMIC CONSTITUTIVE RELATIONSHIP FOR CONCRETE
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摘要: 混凝土是一种应用广泛的结构工程材料, 其材料组份复杂、变化因素多, 因而力学特性也复杂多变. 动\linebreak态/强冲击载荷作用下, 还涉及了材料应变率敏感效应和静水压力相关特性等诸多影响因素, 使得其本构理论的研究更加困难. 本文中, 回顾了近20多年来混凝土材料动态力学特性和本构关系研究方面的进展状况, 主要总结了混凝土材料动态本构特性研究中的经验公式、强度理论和本构模型, 并在分析比较的基础上给出了相应的讨论和评述.Abstract: Concrete is a geo-material used widely in engineering, and its compositionisvery complex. Therefore, the mechanical behavior of concrete under dynamic and impactloadingis also complicated, and influenced by factors including strain rate-sensitivityand hydrostaticpressure-dependence of materials. In this paper, the developments ofdynamicconstitutive behavior of concrete in recent twenty years are reviewed,focusingonthe empirical formula, strength theory and constitutive models.
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Key words:
- concrete /
- dynamic behavior /
- constitutive relationship /
- strength theory /
- damageand fracture
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