Weinberg Kerstin, Werner Marek, Anders Denis
Chair of Solid Mechanics, Faculty IV, Department of Mechanical Engineering, University of Siegen, Paul-Bonatz-Str. 9-11, 57076 Siegen, Germany.
Computational Mechanics and Fluid Dynamics, Faculty of Computer Science and Engineering, TH Köln/ University of Applied Science, Claudiusstrasse 1, 58076 Köln, Germany.
Entropy (Basel). 2018 Feb 22;20(2):140. doi: 10.3390/e20020140.
The functional properties of multi-component materials are often determined by a rearrangement of their different phases and by chemical reactions of their components. In this contribution, a material model is presented which enables computational simulations and structural optimization of solid multi-component systems. Typical Systems of this kind are anodes in batteries, reactive polymer blends and propellants. The physical processes which are assumed to contribute to the microstructural evolution are: (i) particle exchange and mechanical deformation; (ii) spinodal decomposition and phase coarsening; (iii) chemical reactions between the components; and (iv) energetic forces associated with the elastic field of the solid. To illustrate the capability of the deduced coupled field model, three-dimensional Non-Uniform Rational Basis Spline (NURBS) based finite element simulations of such multi-component structures are presented.
多组分材料的功能特性通常由其不同相的重排以及各组分的化学反应所决定。在本论文中，提出了一种材料模型，该模型能够对固态多组分系统进行计算模拟和结构优化。这类典型系统包括电池的阳极、反应性聚合物共混物和推进剂。假定对微观结构演变有贡献的物理过程有：(i) 颗粒交换和机械变形；(ii) 旋节线分解和相粗化；(iii) 组分之间的化学反应；以及(iv) 与固体弹性场相关的能量力。为了说明推导的耦合场模型的能力，给出了基于三维非均匀有理B样条（NURBS）的此类多组分结构的有限元模拟。
