Qian Zhiwei, Schlangen Erik, Ye Guang, van Breugel Klaas
Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft 2628 CN, The Netherlands.
Materials (Basel). 2017 May 26;10(6):587. doi: 10.3390/ma10060587.
Multiscale modeling for cement-based materials, such as concrete, is a relatively young subject, but there are already a number of different approaches to study different aspects of these classical materials. In this paper, the parameter-passing multiscale modeling scheme is established and applied to address the multiscale modeling problem for the integrated system of cement paste, mortar, and concrete. The block-by-block technique is employed to solve the length scale overlap challenge between the mortar level (0.1-10 mm) and the concrete level (1-40 mm). The microstructures of cement paste are simulated by the HYMOSTRUC3D model, and the material structures of mortar and concrete are simulated by the Anm material model. Afterwards the 3D lattice fracture model is used to evaluate their mechanical performance by simulating a uniaxial tensile test. The simulated output properties at a lower scale are passed to the next higher scale to serve as input local properties. A three-level multiscale lattice fracture analysis is demonstrated, including cement paste at the micrometer scale, mortar at the millimeter scale, and concrete at centimeter scale.
用于水泥基材料（如混凝土）的多尺度建模是一个相对较新的课题，但已经有许多不同的方法来研究这些传统材料的不同方面。本文建立并应用参数传递多尺度建模方案来解决水泥浆体、砂浆和混凝土集成系统的多尺度建模问题。采用逐块技术来解决砂浆尺度（0.1 - 10毫米）和混凝土尺度（1 - 40毫米）之间的长度尺度重叠挑战。水泥浆体的微观结构由HYMOSTRUC3D模型模拟，砂浆和混凝土的材料结构由Anm材料模型模拟。然后，通过模拟单轴拉伸试验，使用三维晶格断裂模型来评估它们的力学性能。较低尺度的模拟输出特性被传递到下一个较高尺度，作为输入局部特性。展示了一个三级多尺度晶格断裂分析，包括微米尺度的水泥浆体、毫米尺度的砂浆和厘米尺度的混凝土。
