柔性电子多层异质力电耦合结构跨尺度可靠性仿真模型和高性能算法研究

柔性电子技术正处于从实验室走向工业化应用的关键阶段，对其高效仿真计算成为我国发展柔性电子产业的重要课题。柔性电子的结构和功能复杂，其可靠性在制造和服役中受到外界环境的影响，建立跨尺度的可靠性仿真模型并提高算法性能是研究中的关键问题。本项目以其多层异质复合结构和力电效应耦合为着眼点，研究柔性电子结构可靠性和功能可靠性仿真模型。基于等几何分析框架，采用基于模块的嵌入式多尺度方法，提出大规模柔性电子结构的快速仿真算法；针对柔性电子软硬组合结构的裂纹扩展分析，提出近场动力学与等几何耦合仿真方法；研究变形、应变与电阻、电容等电学性能耦合机制，建立柔性电子功能可靠性仿真模型，提出力电协同仿真算法。本课题针对柔性电子制造和服役中可靠性问题，提出结构和功能可靠性仿真模型和高性能算法，为大规模柔性电子系统设计提供关键的仿真手段，对于提高柔性电子使用寿命，优化柔性电子性能有重要意义。

The flexible electronic technology has been developed to the critical stage from the laboratory to the industrial application, and the development of high-performance simulation method is important to the flexible electronic industry in China. The function and structure of flexible electronic system are complex and their reliability are affected by deformation and loads during manufacturing and service, therefore the development of multi-scale simulation model for reliability and improve the efficiency of the algorithm are the most important issues in research of the flexible electronics. With focus on the large-scale multi-layer complex coupling structure with elastic-electro correlation effects, this project studies the reliability model of both the structure and the function. We proposes the module-embedded concurrent multi-scale simulation method based on isogeometric model to study the high-efficiency mechanical simulation algorithm; the behavior of fracture in flexible electronic system with flexible-rigid combination structures is studied by using the coupling of peridynamics and isogeometric analysis. The correlation relationships of deformation and strain with electrical properties such as resistance and capacitance are studied, and the functional reliability model of flexible electronic is established with the algorithm of elastic-electro collaborative simulation algorithm. This project focuses on the reliability of structure and function of flexible electronics, and proposes an efficient and fast simulation algorithm. The potential findings are of great significance for improving flexible electronic system’s service life and optimizing its performance, and provide the vital simulation method for the design of large-scale flexible electronic system.