Table of Content

Modeling of Heterogeneous Materials

Submission Deadline: 20 April 2021 (closed)

Guest Editors

Prof. Lisheng Liu, Wuhan University of Technology, China
Prof. Xihua Chu, Wuhan University, China
Prof. Xinhua Yang, Huazhong University of Science and Technology, China
Prof. Jianzhong Chen, Wuhan University of Technology, China
Prof. Qun Huang, Wuhan University, China

Summary

Heterogeneous materials, composed of different materials, are increasingly being used in engineering applications. It is important to be able to predict the properties and material response for heterogeneous materials. Modeling method is a basic and important method to fulfill this task. But modeling of heterogeneous materials is still a complex task.

The topics discussed in this special issue include different modeling methods and modeling scales of all kinds of heterogeneous materials. In addition, the design and analysis of heterogeneous materials are included in the special issue. Topics of interest for this Special Issue include, but are not limited to:

• multiscale modeling method of heterogeneous materials

• finite element method of heterogeneous materials

• molecular dynamics of heterogeneous materials

• peridynamics of heterogeneous materials

• modeling of strength and stiffness of heterogeneous materials

• modeling of damage of heterogeneous materials

• modeling of fatigue of heterogeneous materials

• modeling of long-term properties of heterogeneous materials


Keywords

• heterogeneous materials
• multiscale
• finite element method
• molecular dynamics
• meshfree
• peridynamics

Published Papers


  • Open Access

    EDITORIAL

    Introduction to the Special Issue on Modeling of Heterogeneous Materials

    Lisheng Liu, Xihua Chu, Xinhua Yang, Jianzhong Chen, Qun Huang
    CMES-Computer Modeling in Engineering & Sciences, Vol.134, No.1, pp. 1-3, 2023, DOI:10.32604/cmes.2022.025081
    (This article belongs to this Special Issue: Modeling of Heterogeneous Materials)
    Abstract This article has no abstract. More >

  • Open Access

    ARTICLE

    A Flux Based Approximation to Simulate Coupled Hydromechanical Problems for Mines with Heterogeneous Rock Types Using the Material Point Method

    Gysbert Basson, Andrew P. Bassom, Brian Salmon
    CMES-Computer Modeling in Engineering & Sciences, Vol.131, No.1, pp. 379-409, 2022, DOI:10.32604/cmes.2022.019112
    (This article belongs to this Special Issue: Modeling of Heterogeneous Materials)
    Abstract Advances in numerical simulation techniques play an important role in helping mining engineers understand those parts of the rock mass that cannot be readily observed. The Material Point Method (MPM) is an example of such a tool that is gaining popularity for studying geotechnical problems. In recent years, the original formulation of MPM has been extended to not only account for simulating the mechanical behaviour of rock under different loading conditions, but also to describe the coupled interaction of pore water and solid phases in materials. These methods assume that the permeability of mediums is homogeneous, and we show that… More >

  • Open Access

    ARTICLE

    Optimization of the Drag Forces of Shell Janus Micromotor: A Study Based on Hydrodynamical Analysis and Numerical Simulation

    Qiang Wang, Zhen Wang
    CMES-Computer Modeling in Engineering & Sciences, Vol.130, No.1, pp. 443-462, 2022, DOI:10.32604/cmes.2022.015717
    (This article belongs to this Special Issue: Modeling of Heterogeneous Materials)
    Abstract Micromotors are widely used in cell operation, drug delivery and environmental decontamination due to their small size, low energy consumption and large propelling power. Compared to traditional Janus micromotor, the shell Janus micromotor has better motion performance. However, the structural optimization of its motion performance is still unclear. The main factor restricting the motion performance of shell Janus micromotors is the drag forces. In the current work, theoretical analysis and numerical simulation were applied to analyze the drag forces of shell Janus micromotors. This study aims to design the optimum structure of shell Janus micromotors with minimum drag forces and… More >

  • Open Access

    ARTICLE

    Uncertainty Analysis of Seepage-Induced Consolidation in a Fractured Porous Medium

    Lingai Guo, Marwan Fahs, Hussein Hoteit, Rui Gao, Qian Shao
    CMES-Computer Modeling in Engineering & Sciences, Vol.129, No.1, pp. 279-297, 2021, DOI:10.32604/cmes.2021.016619
    (This article belongs to this Special Issue: Modeling of Heterogeneous Materials)
    Abstract Numerical modeling of seepage-induced consolidation process usually encounters significant uncertainty in the properties of geotechnical materials. Assessing the effect of uncertain parameters on the performance variability of the seepage consolidation model is of critical importance to the simulation and tests of this process. To this end, the uncertainty and sensitivity analyses are performed on a seepage consolidation model in a fractured porous medium using the Bayesian sparse polynomial chaos expansion (SPCE) method. Five uncertain parameters including Young’s modulus, Poisson’s ratio, and the permeability of the porous matrix, the permeability within the fracture, and Biot’s constant are studied. Bayesian SPCE models… More >

  • Open Access

    ARTICLE

    Simulation of Elastic and Fatigue Properties of Epoxy/SiO2 Particle Composites through Molecular Dynamics

    Gaoge Zhao, Jianzhong Chen, Yong Lv, Xiaoyu Zhang, Li Huang
    CMES-Computer Modeling in Engineering & Sciences, Vol.128, No.1, pp. 339-357, 2021, DOI:10.32604/cmes.2021.015388
    (This article belongs to this Special Issue: Modeling of Heterogeneous Materials)
    Abstract The influence of different nanoparticle sizes on the elastic modulus and the fatigue properties of epoxy/SiO2 nanocomposite is studied in this paper. Here, the cross-linked epoxy resins formed by the combination of DGEBA and 1,3-phenylenediamine are used as the matrix phase, and spherical SiO2 particles are used as the reinforcement phase. In order to simulate the elastic modulus and long-term performance of the composite material at room temperature, the simulated temperature is set to 298 K and the mass fraction of SiO2 particles is set to 28.9%. The applied strain rate is 109/s during the simulation of the elastic modulus.… More >

  • Open Access

    ARTICLE

    A Simple Cement Hydration Model Considering the Influences of Water-to-Cement Ratio and Mineral Composition

    Baoyu Ma, Guansuo Dui, Zhenglin Jia, Bo Yang, Chunyan Yang, Quangui Gao, Longhua Qin, Ju Ma
    CMES-Computer Modeling in Engineering & Sciences, Vol.127, No.3, pp. 1059-1067, 2021, DOI:10.32604/cmes.2021.015776
    (This article belongs to this Special Issue: Modeling of Heterogeneous Materials)
    Abstract A simple hydration model is used here by taking the composition of the cement and the initial water: cement ratio (w/c) into account explicitly. Its conceptual basis is a combination of the Avrami equation and Bentz’s model based on simple spatial considerations. In this model, the Avrami equation determines the initial reaction, and Bentz’s model describes the following hydration stage. The model favors engineers for it relies on one experimental parameter and has a reliable approximation in the practice. More >

  • Open Access

    ARTICLE

    In-Plane Impact Dynamics Analysis of Re-Entrant Honeycomb with Variable Cross-Section

    Yuanxun Ou, Shilin Yan, Pin Wen
    CMES-Computer Modeling in Engineering & Sciences, Vol.127, No.1, pp. 209-222, 2021, DOI:10.32604/cmes.2021.014828
    (This article belongs to this Special Issue: Modeling of Heterogeneous Materials)
    Abstract Due to the unique deformation characteristics of auxetic materials (Poisson’s ratio ), they have better shock resistance and energy absorption properties than traditional materials. Inspired by the concept of variable cross-section design, a new auxetic re-entrant honeycomb structure is designed in this study. The detailed design method of re-entrant honeycomb with variable cross-section (VCRH) is provided, and five VCRH structures with the same relative density and different cross-section change rates are proposed. The in-plane impact resistance and energy absorption abilities of VCRH under constant velocity are investigated by ABAQUS/EXPLICIT. The results show that the introduction of variable cross-section design can… More >

  • Open Access

    ARTICLE

    Numerical Analysis of Three-Layer Deep Tunnel Composite Structure

    Weiwei Sun, Hongping Min, Jianzhong Chen, Chao Ruan, Yanjun Zhang, Lei Wang
    CMES-Computer Modeling in Engineering & Sciences, Vol.127, No.1, pp. 223-239, 2021, DOI:10.32604/cmes.2021.015208
    (This article belongs to this Special Issue: Modeling of Heterogeneous Materials)
    Abstract To date, with the increasing attention of countries to urban drainage system, more and more regions around the world have begun to build water conveyance tunnels, sewage pressure deep tunnels and so on. However, the sufficient bearing capacity and corrosion resistance of the structure, which can ensure the actual service life and safety of the tunnel, remain to be further improved. Glass Fiber Reinforced Plastics (GFRP) pipe, with light weight, high strength and corrosion resistance, has the potential to be applied to the deep tunnel structure. This paper proposed a new composite structure of deep tunnel lined with GFRP pipe,… More >

  • Open Access

    ARTICLE

    Peridynamic Modeling and Simulation of Fracture Process in Fiber-Reinforced Concrete

    Zhuang Chen, Xihua Chu
    CMES-Computer Modeling in Engineering & Sciences, Vol.127, No.1, pp. 241-272, 2021, DOI:10.32604/cmes.2021.015120
    (This article belongs to this Special Issue: Modeling of Heterogeneous Materials)
    Abstract In this study, a peridynamic fiber-reinforced concrete model is developed based on the bond-based peridynamic model with rotation effect (BBPDR). The fibers are modelled by a semi-discrete method and distributed with random locations and angles in the concrete specimen, since the fiber content is low, and its scale is smaller than the concrete matrix. The interactions between fibers and concrete matrix are investigated by the improvement of the bond’s strength and stiffness. Also, the frictional effect between the fibers and the concrete matrix is considered, which is divided into static friction and slip friction. To validate the proposed model, several… More >

  • Open Access

    ARTICLE

    Behavior of High Strength Concrete Filled Square Steel Tube Stub Columns with Inner CFRP Tube Under Biaxial Eccentric Compression

    Zhijian Yang, Guochang Li, Yan Lang, Zengmei Qiu
    CMES-Computer Modeling in Engineering & Sciences, Vol.127, No.1, pp. 273-290, 2021, DOI:10.32604/cmes.2021.014606
    (This article belongs to this Special Issue: Modeling of Heterogeneous Materials)
    Abstract This paper studies the contribution of CFRP (carbon fiber-reinforced polymer) to the mechanical behavior of high strength concrete-filled square steel tube (HCFST) under biaxial eccentric compression. The new type of composite member is composed of an inner CFRP tube and an outer steel tube with concrete filled in the two tubes. The finite element analysis was made by ABAQUS on the behavior of high strength concrete filled square steel tubular columns with inner CFRP circular tube subjected to bi-axial eccentric loading. The results obtained from the finite element analysis were verified with the experimental results. In addition, the load-deflection curves… More >

  • Open Access

    ARTICLE

    Adaptive Extended Isogeometric Analysis for Steady-State Heat Transfer in Heterogeneous Media

    Weihua Fang, Tiantang Yu, Yin Yang
    CMES-Computer Modeling in Engineering & Sciences, Vol.126, No.3, pp. 1315-1332, 2021, DOI:10.32604/cmes.2021.014575
    (This article belongs to this Special Issue: Modeling of Heterogeneous Materials)
    Abstract Steady-state heat transfer problems in heterogeneous solid are simulated by developing an adaptive extended isogeometric analysis (XIGA) method based on locally refined non-uniforms rational B-splines (LR NURBS). In the XIGA, the LR NURBS, which have a simple local refinement algorithm and good description ability for complex geometries, are employed to represent the geometry and discretize the field variables; and some special enrichment functions are introduced into the approximation of temperature field, thus the computational mesh is independent of the material interfaces, which are described with the level set method. Similar to the approximation of temperature field, a temperature gradient recovery… More >

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