支持形变的紧凑布局优化设计的物理学建模方法研究

项目名称： 支持形变的紧凑布局优化设计的物理学建模方法研究

项目编号： No.51265002

项目类型： 地区科学基金项目

立项/批准年度： 2013

项目学科： 机械、仪表工业

项目作者： 廖小平

作者单位： 广西大学

项目金额： 50万元

中文摘要： 针对复杂机械系统装配性能保障以及空间紧凑布局精量化设计寻优的研究与应用前景，创新提出支持形变的紧凑布局优化设计的物理学方法，探索出一种整体性能优化和设计效率提高的紧凑布局精量化设计新途径和新方法，推进布局精量化设计智能化与数字化优化方法的发展。 研究内容主要包括：①布局设计的橡皮筋模拟和基于质点弹簧形变的物理学方法；②支持形变布局设计的双层优化算法；③检验方法的有效性。拟解决的关键问题是橡皮筋模拟布局CAD数据表示、碰撞检测和响应以及闭环机制的双层优化等方法。技术路线要点：建立支持形变的闭环的双层优化模型实现最优紧凑布局。即，系统层通过橡皮筋模拟和遗传优化等，实现整体性能的紧凑性布局；组件层采用质点-弹簧网格形变和毗邻组件扩张优化方法，实现可变形组件在拥挤空间下的目标体积。 特色与创新：提出采用物理学理论应用于支持形变的产品布局精量化设计过程的新方法，具有明显的理论意义和实际价值。

中文关键词： 质点-弹簧物理模型；网格变形；橡皮筋模拟；布局精量化设计；

英文摘要： In terms of research and application prospect to complex mechanical system assembly performance guarantee and precisely quantitative compact layout design optimization, a physically-based modeling for compact layout design optimization with shape morphing was put forward innovatively, which is aimed at finding a new way of layout design for optimizing the overall performance objectives， improving design efficiency and propelling the development of intelligent design and digital optimization method. The research mainly includes three aspects. First, physically-based modeling method of a rubber band analog for compact layout design and a mesh shape morphing based on mass-spring; Second, the bi-level optimization algorithm for the layout design with shape morphing; Third, verification of the research method. The key problems to be resolved are CAD data presentation for rubber band analog model, collision detection and a closed-loop bi-level optimization approach. The point of technical line is to build a closed-loop bi-level optimization model which supports shape morphing to realize optimal compact layout, that is, system layer and component layer. At system level, it uses rubber bands analogy and Genetic Optimization etc to optimize the overall performance objectives and make layout design compact. At c

英文关键词： Physical model based on mass-spring；mesh deformation；rubber band analogy；precisely quantitative layout design；