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A Study on Objective Modeling and Multidisciplinary Optimization for Concurrent Engineering

并行工程目标建模与多学科优化研究

基本信息

批准号：
06452169
负责人：
AKAGI Shinsuke
金额：
$ 4.86万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

项目摘要

Objective modeling and Multidisciplinary Optimization Technique are studied for Concurrent Engineering Systems through the development of the computer aided design system for several actual design problems. The results obtained are summarized as follows :1.A framework of computational design method and objective modeling is proposed for layout and geometry design of complicated mechanical systems. In the method, a design object is represented with a set of decorative relationships among various elements of a system i.e., apparatus, piping etc., which is gradually extended form system structure to exact layout and geometry through the design process. The configuration to be designed is made to grow and refined through the design process with evaluating their functions, cost and manufacturability etc. The system developed is applied to the design of an air-conditioning unit, and its validity and effectiveness is ascertained.2.Multidisciplinary optimization technique is also applied for the design problems of several kind of complicated mechanical systems with referenced to the development on concurrent engineering system. The design problems developed here are link mechanisms, gear drive devices, vehicle power trains etc. In the design process of these products, various aspects must be dealt with concurrently and simultaneously, since they include a large umber of functional disciplines.For example, in the design of link mechanisms, the multidisciplinary modeling and optimization must be applied for its linkage shape synthesis and structural strength design. To formulize and solve the problem, an object-oriented modeling and a generalized reduced optimization technique are applied. And their effectiveness is ascertained.The design technique developed here is also applicable for other various kind of design problems including the above mentioned design.

通过对几个实际设计问题的计算机辅助设计系统的开发，研究了并行工程系统的目标建模和多学科优化技术。所得结果总结如下：1。提出了一种用于复杂机械系统布局和几何设计的计算设计方法和目标建模框架。该方法将设计对象表示为系统各元素（如设备、管道等）之间的一组装饰关系，并通过设计过程从系统结构逐步扩展到精确的布局和几何形状。在设计过程中，通过对其功能、成本和可制造性等进行评估，使所要设计的配置不断增长和完善。将所开发的系统应用于某空调机组的设计，验证了其正确性和有效性。结合并行工程系统的发展，将多学科优化技术应用于多种复杂机械系统的设计问题。这里开发的设计问题包括连杆机构、齿轮传动装置、车辆动力系统等。在这些产品的设计过程中，各个方面必须同时处理，因为它们包含了大量的功能学科。例如，在连杆机构的设计中，连杆机构的形状综合和结构强度设计必须采用多学科建模和优化。采用面向对象建模和广义约简优化技术对问题进行形式化描述和求解。并对其有效性进行了验证。本文提出的设计方法也适用于包括上述设计在内的其他各种设计问题。