“復雜裝備研發數字化工具中的計算力學和多場耦合若干前沿問題”立項報告

張洪武 鄭勇剛

摘 要：（1）強沖擊荷載下結構破壞過程的建模與關鍵算法；（2）材料與結構一體化的熱力耦合多尺度模型與算法；（3）考慮多場耦合與不確定性的結構優化設計和反問題方法；（4）新一代集成化計算力學軟件平臺設計理論和方法；（5）車身鋼板輕量化與碰撞安全性的數字化設計；（6）特種裝備結構的毀傷與服役過程安全性的數值仿真。項目將在復雜裝備產品設計數字化工具的計算力學和多場耦合理論和方法的前沿研究方面取得進展與創新。在強動荷載作用下多物質響應分析理論、數值方法及高應變率下材料動態行為，材料與結構熱力耦合的非線性多尺度本構模型和高性能多尺度算法，多場耦合下考慮不確定性度量與傳播的結構優化與工程反問題理論和高效算法，面向多場耦合與多尺度分析的新一代計算力學軟件平臺研發，多場耦合分析及不確定性優化在車輛覆蓋件成形及碰撞安全性設計中的應用研究以及特種裝備結構服役過程和沖擊載荷下毀傷的數值模擬、目標結構的防護分析等研究方面取得重點突破；在主要研究方面達到國際先進水平，使我國相關研究在國際學科前沿占據一席之地，同時為國防與民用高技術裝備自主創新設計提供關鍵建模理論、先進數值分析方法和技術支撐，形成自主知識產權的新一代大規模計算力學和多場耦合軟件系統與研發平臺，培養計算力學領域的創新型人才隊伍，為我國裝備制造業實現由大到強的轉變做出一份貢獻。

關鍵詞：計算力學 多場耦合 復雜裝備

Application Report for the Project "Some Frontier Problems of Computational Mechanics and Multi-field Coupling in Digital Tool for Development of Complex Equipment"

Zhang Hongwu Zheng Yonggang

（Dalian University of Technology）

Abstract：Aiming at common frontier problems in basic theories， advanced algorithms and software packages of computational mechanics in the design， manufacturing and service of major civil and defense equipments， this project will perform investigations on the following subjects：（1） modeling and computational algorithms for complex highly-nonlinear mechanical behavior analysis considering multi-field coupling of materials and structures；（2） nonlinear multi-scale model of thermal-structure coupling and key algorithms for integrated design of materials and structures；（3） structural and multidisciplinary optimization considering uncertainty and multi-function；（4） structure and design pattern of new-generation integrated software platform of computational mechanics. Six projects will be conducted：（1） Modeling and key algorithm for structural failure under intense impulsive loading；（2） Multiscale modeling and algorithms for thermal-mechanical coupled problems on structures integrating with materials；（3） Methods of structural optimization and inverse problem considering multiphysics coupling and uncertainty；（4） Design theories and methods for new generation integrated software platform for computational mechanics；（5） Digital design of light weight of sheet metal and crashworthiness performance for vehicle body；（6） Numerical simulation on the damage and service process security of special equipment and structure. In related major directions， the accomplished research will lead to a reasonable position in the international discipline fronts. The project will also provide essential modeling theories and numerical methods for novel design of civil and national defense high-tech equipments， and realize self-owned copyright new-generation large scale computational mechanics and multi-field analysis platform. Through this project， young professionals in the field of computational mechanics will also be trained， which will contribute to the development of the equipment manufacturing industry.

Key Words：Computational mechanics； Multi-field coupling； Complex equipment

閱讀全文鏈接（需實名注冊）：http：//www.nstrs.cn/xiangxiBG.aspx？id=50179&flag=1