Multi-scale simulation of dynamic behavior of concretes based on eigendeformation-based homogenization method

摘要：

　　A multi-scale approach is introduced to predict the dynamic behavior of concrete by using eigendeformation based reduced order homogenization method.A three-dimensional meso-scale simulation model which considers the random structure and position of aggregates at the mesoscopic level is generated as the unit cell of concrete and validated through uniaxial compression simulation.Simulations of concrete material under dynamic impact loading are performed by considering the real structure of concrete in meso-scale.The multi-scale method has been validated against the SHPB compression experimental data at different incident velocity.Dynamic behavior of concrete with different strength is predicted to account for the relation between meso-mechanic features and macro-scale dynamic behavior.It has been shown that simulation results correlate reasonably well with the corresponding experiments.The multi-scale method presented can bridge meso-scale characters and macro-scale dynamic behavior.The computational efficiency with eigendeformation -based homogenization method is higher than computation with meso-scale model.

关键词： Multi-scale Homogenization Concrete Dynamic behavior Meso-scale model

作者: Ji-peng WANG Xian-feng ZHANG Ning DU Hai-hua CHEN

作者单位: School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing, Jiangsu, Chin School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing, Jiangsu, Chin

会议类型: 国际会议

会议名称: 2018 International Conference on Defence Technology (2018国际防务技术会议)

会议地点: 北京

会议语种:英文

页码: 705-710

在线出版日期: 2018-10-21（万方平台首次上网日期，不代表论文的发表时间）