Fracture Modelling of Concrete at Meso-scale Using Piece-wise Based Elastic-Plastic Lattice Model
ZHANG Hongzhi1,2, JIN Zuquan3,*, JIANG Nengdong1, GE Zhi1, Erik Schlangen4, LING Yifeng1, Branko Šavija4, WANG Zheng5
1 School of Qilu Transportation, Shandong University, Jinan 250100, China 2 Suzhou Research Institute, Shandong University, Suzhou 215021, Jiangsu, China 3 School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, Shandong, China 4 Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft 2628 CN, the Netherlands 5 Shandong Hi-speed Company Limited, Jinan 250100, China
Abstract: The classically lattice model assumes the local elements behave elastic brittle, neglecting the ductility of the mortar matrix. This leads to the simulated load-displacement response more brittle than the realistic. To solve the aforementioned issue, a piece-wise approach was introduced to describe the elastic-plastic constitutive relation of lattice element. The fracture process and the load-displacement response were obtained through the sequentially-linear solution approach. The model was calibrated using the uniaxial tension and compression tests. It is found that the model can precisely simulate the fracture process and load-displacement response. Moreover, the model was used to model the size effect in uniaxial tension and the influence of the specimen’s slenderness and boundary confinement on the fracture behavior under compression. It offers a new theoretical method and approach for studying the fracture of concrete.
通讯作者:
*金祖权,青岛理工大学教授、博士研究生导师,国家杰青,国家万人计划科技创新领军人才,山东省泰山学者特聘专家。英国伦敦大学学院(UCL)访问学者、兼职博士研究生导师。1999年获河南理工大学硅酸盐工艺学士学位;2003年获河南理工大学采矿专业硕士学位;2006年获东南大学材料学博士学位。主要从事海洋钢筋混凝土腐蚀与防护研究。在《硅酸盐学报》、Cement and Concrete Research等国内外著名刊物上发表SCI和EI检索论文近100篇。获得教育部自然科学一等奖、科技进步二等奖各1项。jinzuquan@126.com
作者简介: 张洪智,山东大学教授,国家优青(海外),山东省泰山学者青年专家。2013年获哈尔滨工业大学土木工程专业学士学位;2015年获哈尔滨工业大学土木工程专业硕士学位;2019年获代尔夫特理工大学结构工程博士学位。主要从事水泥基材料的多尺度测试和模拟等方面的科学研究。在Cement and Concrete Research、Cement and Concrete Composites等著名SCI期刊发表论文60余篇。
引用本文:
张洪智, 金祖权, 姜能栋, 葛智, Erik Schlangen, 凌一峰, Branko Šavija, 王铮. 基于分段步进式弹塑性格构模型的混凝土破坏过程细观模拟[J]. 材料导报, 2023, 37(8): 21100198-7.
ZHANG Hongzhi, JIN Zuquan, JIANG Nengdong, GE Zhi, Erik Schlangen, LING Yifeng, Branko Šavija, WANG Zheng. Fracture Modelling of Concrete at Meso-scale Using Piece-wise Based Elastic-Plastic Lattice Model. Materials Reports, 2023, 37(8): 21100198-7.
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2023, Vol. 37 
