基于有效介质理论的物理性能计算模型的软件实现

Software realization of physical property calculation model based on effective medium theory

在改进的有效介质理论的基础上采用C++/Qt混合编程,设计并开发出一套复合材料物理性能模拟计算软件——Composite Studio.该软件通过格林函数对本构方程进行求解,计算体积分数、颗粒长径比、取向分布、宏观位向对复合材料有效性能的影响.目前软件开发了弹性模量和介电常数两个模块,提供了友好的人机界面,能够构建多个显微结构参数的大量组合,对结果进行作图分析.该软件可以作为一种通用的计算软件,用作高性能复合材料的材料设计.

In this paper,a composite physical property calculation software-Composite Studio is developed based on the modified effective medium theory.The computing kernel of the software is written in C++language and its GUI is designed by Qt.With the development of the computation technique,the material genome project is proposed,which tries to shorten the period of the material design by high-throughput computation,data mining and property database establishment.On a mesoscopic scale,there are several kinds of the models to calculate the physical properties of the composite materials.However,these models usually have the formula in quite a lot of kinds of forms.A general commercial software for physical property calculation on a mesoscopic scale is still leaking.The software uses Green’s function to solve the constitutive equations.It calculates the effects of microstructural factors on physical properties.These factors include volume fraction,aspect ratio of reinforce particles,orientation distribution,and macroscopic orientation.It can obtain more than 10000 composites by freely combining four microstructure factors.The operation process of software includes 5 steps.The first step is to choose the materials of matrix and reinforcement.The second step is to select the shape type of reinforcement.The third step is to set the range of values for the microstructure factors of the composite materials.The fourth step is to choose the calculation model and start calculations.The last step is to plot and analyze the results.In addition,researchers can directly have the calculation results through the single point analysis module of the software.We use several two-dimensional line plots to display multi-dimensional calculation results.This is convenient and efficient for researchers to observe and analyze the results.Until now,two calculation modules were developed in Composite Studio,i.e.the elastic modulus calculation module and the dielectric constant calculation module.The software can be applied to different computer systems.In the future,the Composite Studio can be used as a general-purpose calculation tool embedded into an server platform for popular composite design.