基于广义功能建模的复杂产品模块化设计技术研究

发布时间：2018-05-14 04:07

本文选题：概念设计 + 模块化　；参考：《西南交通大学》2014年硕士论文

【摘要】：随着工业的生产化以及人们对产品个性化需求的提高,模块化设计己成为多数机械产品所采用的一种先进的设计方法。通常产品概念设计决定着产品研发70%的成本和效率,若在产品概念设计时期实现有效模块划分将有益于整个产品的设计过程。此外,随着产品功能的不断增加,使得产品功能、结构具有高度的耦合性,不利于实现模块化设计,但随着产品生命周期不断缩短和创新能力的不断增强,复杂产品的模块化设计仍是一个有效的手段。针对以上要求,本文提出了一套系统性的面向复杂机械产品概念设计阶段的模块化设计及评价方法。首先在研究传统功能结构建模方法的基础上,提出了广义功能结构模型的构建方法。基于运行活动图进行顶层抽象功能分解,再通过改进广义工艺功能分析法实现次级功能的分解和功构映射,从而有效克服了复杂机械产品顶层功能分解和耦合功能相关性分析困难等问题。其次,从功能、物理、几何三个方面进行了零部件之间的联系因子相关性分析,并基于层次分析法和刻度标定法实现了联系因子的定量化计算。然后结合设计结构矩阵基本理论和功能结构模型构建了零部件的DSM数值化矩阵,通过智能遗传聚类算法实现了复杂机械产品的模块划分。针对模块划分结果,提出了一种基于变更风险的模块化评估方法。在零件的变更传播有效路径分析和零部件重要度分析的基础上,构建了变更传播的直接可能性矩阵、三个传播深度的间接可能性矩阵和影响度矩阵,以此得到了各个模块的综合风险矩阵。通过对综合风险矩阵的行列归一化处理,实现了面向抗干扰能力和传播干扰能力的模块化性能评估。最后,在模块设计和性能评估完成的基础上,从功能、几何、材料、制造四个方面进行了模块接口特性的分析,建立了模块接口数据结构体系,同时基于层次分析法实现了接口基型结构的构建和接口系列化流程、标准化编码规则的制定,从而形成了一套系统的模块接口标准化设计方法,并以高速列车转向架为对象验证了该设计方法的有效性。
[Abstract]:With the development of industry and the improvement of individual demand, modular design has become an advanced design method for most mechanical products. Product conceptual design usually determines the cost and efficiency of product research and development. If effective module partition is realized during product conceptual design period, it will benefit the whole product design process. In addition, with the continuous increase of product functions, the product functions and structures have a high degree of coupling, which is not conducive to the realization of modular design, but with the continuous shortening of product life cycle and the continuous enhancement of innovation ability, Modular design of complex products is still an effective means. In view of the above requirements, this paper presents a systematic modular design and evaluation method for the conceptual design of complex mechanical products. Firstly, based on the research of traditional functional structure modeling method, a generalized functional structure model construction method is proposed. The top-level abstract function decomposition is carried out based on the running activity diagram, and then the decomposition of secondary functions and the mapping of work structure are realized by improving the generalized process function analysis method. Therefore, it overcomes the problems of top-level functional decomposition and coupling functional correlation analysis of complex mechanical products. Secondly, the correlation analysis of the relation factor between parts and components is carried out from three aspects of function, physics and geometry, and the quantitative calculation of the connection factor is realized based on AHP and calibration method. Then the DSM numerical matrix of parts is constructed based on the basic theory of design structure matrix and functional structure model, and the module partition of complex mechanical products is realized by intelligent genetic clustering algorithm. According to the result of module partition, a modularization evaluation method based on change risk is proposed. Based on the analysis of the effective path of change propagation and the analysis of component importance, the direct possibility matrix of change propagation, the indirect possibility matrix of three propagation depth and the influence degree matrix are constructed. Based on this, the comprehensive risk matrix of each module is obtained. Through the normalization of the comprehensive risk matrix, the modularization performance evaluation for anti-jamming ability and propagation interference ability is realized. Finally, based on the completion of module design and performance evaluation, the module interface characteristics are analyzed from four aspects: function, geometry, material and manufacture, and the module interface data structure system is established. At the same time, based on Analytic hierarchy process (AHP), the construction of interface basic structure and interface serialization process and the formulation of standardized coding rules are realized, thus a set of systematic modular interface standardization design method is formed. The validity of the design method is verified by taking the bogie of high speed train as an example.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TB472

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