面向数字成形制造的高精度模拟计算技术

在中国国家自然科学基金资助项目《工程中数值分析的复杂力学建模与高精度方法》、中国国家自然科学基金资助项目《精确成形制造中的高梯度特征建模与典型工艺分析》，以及中国教育部高等学校博士学科点专项科研基金资助项目《塑性微成形中复杂力学行为的两尺度耦合建模研究》共同资助下，开展高精度数值模拟方法的研究，对以上研究取得的成果进行学术总结。 认为数字成形制造的研究发展方向是：(1)数字成形制造的共性基础性问题研究，包括多场和多尺度耦合、高度非线性和高梯度、时间和构形的动态过程、局部精细和大规模计算、计算的可靠性；(2)数字成形制造过程的典型特征原型及建模，包括材料成形过程中的宏/微观、性能/组织等多场特征原型，固态塑性成形、液态及半固态成形、焊合过程的特征计算建模，典型制造过程(塑性成形、液态及半固态成形)模型的大规模数值计算方法；(3)基于网络的数字成形制造平台，包括基于网络实现成形制造数字化的基础问题研究，计算信息的数据管理与网络通信技术，基于网络的大规模平行计算实现(分布式和超级计算机)。

High Precision Simulation Technologies for Digital Processing Manufacture

Jointly funded by the projects of the NSFC: Modeling and computing for complex mechanics in engineering (No.59825117), Characterized modeling and typical technique analyses in net shape forming (No.50175060),and the project of the Ministry of Education: Two scale coupling Model for Complex Mechanical Behavior of Microforming(No.2002003052),this paper gives a summary for the work to search the high accuracy simulation approaches for processing manufacture. The potential research directions of digital processing manufacture may cover: (1) the common fundamental researches, i.e., the multi field and multi scale simulations, the higher nonlinear and gradient problems, the dynamic processes in time and configuration, the local re mesh and large scale computations, the reliability of calculations. (2) the characteristic modeling of digital processing manufacture, i.e., the macro/micro modeling during plastic forming, liquid and semi solid forming, welding processes, to get a high quality in performance/structure. (3) the internet based platform for digital processing manufacture, including the data management and communication of computation information via internet, the large scale parallel computation via super computer and distributed PC clusters, etc.