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基于廣義功能建模的復(fù)雜產(chǎn)品模塊化設(shè)計技術(shù)研究

發(fā)布時間:2018-05-14 04:07

  本文選題:概念設(shè)計 + 模塊化; 參考:《西南交通大學(xué)》2014年碩士論文


【摘要】:隨著工業(yè)的生產(chǎn)化以及人們對產(chǎn)品個性化需求的提高,模塊化設(shè)計己成為多數(shù)機(jī)械產(chǎn)品所采用的一種先進(jìn)的設(shè)計方法。通常產(chǎn)品概念設(shè)計決定著產(chǎn)品研發(fā)70%的成本和效率,若在產(chǎn)品概念設(shè)計時期實(shí)現(xiàn)有效模塊劃分將有益于整個產(chǎn)品的設(shè)計過程。此外,隨著產(chǎn)品功能的不斷增加,使得產(chǎn)品功能、結(jié)構(gòu)具有高度的耦合性,不利于實(shí)現(xiàn)模塊化設(shè)計,但隨著產(chǎn)品生命周期不斷縮短和創(chuàng)新能力的不斷增強(qiáng),復(fù)雜產(chǎn)品的模塊化設(shè)計仍是一個有效的手段。針對以上要求,本文提出了一套系統(tǒng)性的面向復(fù)雜機(jī)械產(chǎn)品概念設(shè)計階段的模塊化設(shè)計及評價方法。 首先在研究傳統(tǒng)功能結(jié)構(gòu)建模方法的基礎(chǔ)上,提出了廣義功能結(jié)構(gòu)模型的構(gòu)建方法;谶\(yùn)行活動圖進(jìn)行頂層抽象功能分解,再通過改進(jìn)廣義工藝功能分析法實(shí)現(xiàn)次級功能的分解和功構(gòu)映射,從而有效克服了復(fù)雜機(jī)械產(chǎn)品頂層功能分解和耦合功能相關(guān)性分析困難等問題。 其次,從功能、物理、幾何三個方面進(jìn)行了零部件之間的聯(lián)系因子相關(guān)性分析,并基于層次分析法和刻度標(biāo)定法實(shí)現(xiàn)了聯(lián)系因子的定量化計算。然后結(jié)合設(shè)計結(jié)構(gòu)矩陣基本理論和功能結(jié)構(gòu)模型構(gòu)建了零部件的DSM數(shù)值化矩陣,通過智能遺傳聚類算法實(shí)現(xiàn)了復(fù)雜機(jī)械產(chǎn)品的模塊劃分。 針對模塊劃分結(jié)果,提出了一種基于變更風(fēng)險的模塊化評估方法。在零件的變更傳播有效路徑分析和零部件重要度分析的基礎(chǔ)上,構(gòu)建了變更傳播的直接可能性矩陣、三個傳播深度的間接可能性矩陣和影響度矩陣,以此得到了各個模塊的綜合風(fēng)險矩陣。通過對綜合風(fēng)險矩陣的行列歸一化處理,實(shí)現(xiàn)了面向抗干擾能力和傳播干擾能力的模塊化性能評估。 最后,在模塊設(shè)計和性能評估完成的基礎(chǔ)上,從功能、幾何、材料、制造四個方面進(jìn)行了模塊接口特性的分析,建立了模塊接口數(shù)據(jù)結(jié)構(gòu)體系,同時基于層次分析法實(shí)現(xiàn)了接口基型結(jié)構(gòu)的構(gòu)建和接口系列化流程、標(biāo)準(zhǔn)化編碼規(guī)則的制定,從而形成了一套系統(tǒng)的模塊接口標(biāo)準(zhǔn)化設(shè)計方法,并以高速列車轉(zhuǎn)向架為對象驗證了該設(shè)計方法的有效性。
[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.
【學(xué)位授予單位】:西南交通大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:TB472

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