摘要
利用复合材料理论,采用纤维等效法将墙板框格纤维化,建立了生态复合墙板匀质等效弹性模型。以课题组前期试验墙板为例证明了该等效模型的有效性。在此基础上,引入损伤变量,分析了各向同性材料基于热力学理论损伤演化法则并建立了生态复合墙板的损伤本构关系。根据能量耗散原理推导了匀质等效模型的损伤指数计算公式,建立了匀质等效生态复合墙板弹塑性阶段应力-应变计算方法。算例分析表明,采用等效的匀质墙板模型进行非线性分析模型简单、计算量小、精度高。为生态复合墙结构的弹塑性动力反应分析提供了便利和应用基础。
Using the theory of composite materials and the method of fiber equivalent,and making the wallboard sash fibrosis,the homogeneous equivalent elastic model of ecological composite wall slab is set up. The early stage of the research experiment has proved that the equivalent wallboard model is effective. On this basis,damage variable is introduced,the damage evolution law of isotropic material is analyzed,which based on the thermodynamics theory,and a damage constitutive relations of ecological composite wall slab is established. According to the principle of energy dissipation,the formulas of damage index of homogeneous equivalent elastic model is derived. Example analysis shows that use the equivalent homogeneous wallboard model for nonlinear analysis is simple,small amount of calculation and high precision. These results can provide a basis and convenience for elasto-plastic dynamic response analysis of ecological composite wall structure
出处
《工程抗震与加固改造》
北大核心
2016年第4期121-125,148,共6页
Earthquake Resistant Engineering and Retrofitting
基金
国家自然科学基金项目(51178385)
关键词
生态复合墙
复合材料
演化法则
损伤指数
本构关系
ecological composite wall structure
composites
evolution rule
damage index
constitutive relations
