【作者】 陈科；

【导师】 赵韩；

【作者基本信息】 合肥工业大学 ， 机械制造及其自动化， 2001， 博士

【摘要】 竞争的广泛性和普遍性，给制造业带来了挑战和机遇。作为指导新产品开发和提高产品质量的基础理论和方法，作为提升产品市场竞争能力的重要手段，作为制造业的灵魂，现代设计理论和方法也进入了一个新的研究阶段。随着现代科学技术的进步，特别是数学、计算机信息科学、生命生理科学等学科的发展，加之近年来在制造业出现的并行工程思想等，将这些学科的最新进展引入到现代设计理论和方法的研究之中，必将有益于设计理论和方法的发展。 本文在并行工程思想的基础上，分析了设计理论和方法的研究成果，对现代设计理念和方法进行了深入系统的研究。指出了现代设计理论的十大特点；提出了产品设计过程种的产品设计流、产品设计校验点和产品设计绩效的概念，运用这些概念对产品的设计过程进行科学的规划和管理，对产品设计过程进行有效的评估；在设计方法方面，运用人工神经网络的基本理论，进行了并行结构优化设计技术的研究，将结构分析的有限元方法和优化设计技术有机地融合起来，建立了并行优化设计方法；针对现有优化设计方法所存在的一些问题，运用人工神经网络和遗传算法，进行了新型优化算法的研究，开发了几种新型的优化算法；针对工程实例进行了试验研究。 第一章阐明了本课题提出的背景、来源、目的和意义，综述了现代机械设计理论和方法的发展和研究现状；总结了现代设计理论的十大特点。 第二章在对产品设计过程进行分析的基础上，运用并行工程的思想，研究了产品开发的并行设计模式，提出了产品设计流、产品设计校验点和产品设计绩效概念，并将这些概念运用于现代设计理论之中；分析了产品并行设计中的关键技术——并行优化设计技术，提出了面向产品的智能优化设计集成环境。 第三章进行了并行结构优化设计方法的研究。运用人工神经网络的理论，开发了应用于机械结构优化设计的并行结构优化设计方法，将有限元法这一有效的工程分析方法和优化设计技术进行有机的融合，并进行了设计工程实例的应用。 第四章运用人工神经网络的理论，提出了“结构”和“过程”的概念，建立了基于结构和过程的优化设计理论，开发了Hopfield并行优化算法、时变回归并行优化算法和Boltzmann并行优化算法，编制了相应的算法程序，并针对每种新型优化算法进行了数学考题和工程实例的应用。 M，一 第五章在演化算法理论特别是遗传算法理论的基础上，通过对遗传算法进 厂＿－＿＿＿行分析，开发了实数编码的遗传优化算法，编制了相应的算法程序，并针对该。算法进行了数学考题和工程实例的应用。。＿ 第六章对本文的工程应用背景一压铸机进行了试验研究，进行了应力应 一＿－＿＿变试验，验证了并行结构优化设计方法的有效性。一、＿ 第七章对全文的研究工作进行了总结，给出了主要的研究成果和结论。提“一＿出了有待于进一步深入研究的问题。更多还原

【Abstract】 The market competition is very fierce all over the world. This challenges the manufacturing and brings the chances to it. As soul of manufacturing,modern design theory is used to promote the products’ ability of competing. The researchers have being studied it for a long time and got many progresses. Brilliant achievements of research on math,computer science and physiology are gained. Modern design theory will obtain great profits form combining these progresses.This dissertation is divided into two main parts. First,a summary of the most recently progresses gained in modern design are presented. Ten characteristics of modern design are pointed out. In addition,some new concepts related to modern design are put forward. These new concepts are employed to instruct and evaluate the product design. Secondly,some new concurrent design methods are developed by using the theory of artificial neural network(ANN),genetic algorithm(GA). The test for an actual example is described also.The main contents of this dissertation are as following:In Chapter 1,the background,source,purpose and significance of the subject are introduced. An outline on modern design is presented in this chapter. Based on the summarization,ten properties of modern design theory are obtained.In Chapter 2,the process of product design is analyzed in detail. First,concurrent design mode is presented. In this new design mode,three new concepts,product design stream,milestone of product design and design efficiency,are promoted. Secondly,as one of the essential technologies in concurrent design,concurrent optimum design technology is discussed. At last,an integrated environment of artificial optimum design orient to product is constructed.In Chapter 3,a concurrent structure optimum design technique is researched. The theory of ANN is helpful in this study. The methods of finite element analysis and optimum design are blent in well. As applications of this new strategy,some examples are examined.In Chapter 4,some new optimum strategies are researched. Two new concepts,structure and process,are presented. Several new optimum design algorithms are developed based on the theory of ANN. These methods are different from the traditional techniques. They have their own characteristics,such as properties ofparallelism,intelligent and so on. They can be used to solve some problems that traditional optimum design methods are unavailable. Some examples are tested.In Chapter 5,a genetic optimum algorithm is developed. The thought of genetic algorithm plays an important role in the study. In addition,several examples are provided.In Chapter 6,engineering test is described. As an object for the application,die casting machine is introduced. Stress and displacement test is recorded. The result of the test proves the validity of the methods.At last,in Chapter 7,the conclusions of whole thesis are summed up,and the future research is proposed.更多还原