【文章內(nèi)容簡(jiǎn)介】 traditional method to validate its effectivity. (3) A new process parameters diagnosis method based on the fisher contribution plot was presented according to the principle of Fisher discriminant analysis. The new method and PCA contribution plot were all applied to the quadrupletank process to diagnose process parameters. The diagnosis results showed the difference of the two methods. (4) The production flow of CSP production line was described briefly, then the method of quality diagnosis based on neural works was applied to CSP production line to validate its feasibility and effectivity . Finally, the thesis was concluded with a summary and the prospect of the quality diagnosis theory was discussed. Key words： Quality Diagnosis, PCA, Neural Networks, Fisher Contribute Plot. 論文題 目： 基于 Web 的面向產(chǎn)品開發(fā)過(guò)程的客車 PDM 系統(tǒng)的研究與開發(fā) Research and Development of PDM System on Bus Oriented to Product Developing Process Based on the Web 研究生姓名： 王翠表 導(dǎo)師姓 名： 李 強(qiáng) 教授 專 業(yè)： 機(jī)械電子工程 摘 要 ： 分析了國(guó)內(nèi)外產(chǎn)品數(shù)據(jù)管理系統(tǒng)的特點(diǎn)，結(jié)合客車行業(yè)的實(shí)際需求以及對(duì)客車產(chǎn)品開發(fā)過(guò)程數(shù)據(jù)信息的全面分析，運(yùn)用 Web 技術(shù)，分布式數(shù)據(jù)庫(kù)技術(shù)、面向?qū)ο蠹夹g(shù)、成組技術(shù)，開展了基于 Web 的面向產(chǎn)品開發(fā)過(guò)程的客車產(chǎn)品數(shù)據(jù)管理系統(tǒng)的研究與開發(fā)。 8 在對(duì)客車行業(yè)產(chǎn)品開發(fā)部門進(jìn)行需求分析的基礎(chǔ) 上，運(yùn)用軟件工程方法，對(duì)系統(tǒng)進(jìn)行了分析與設(shè)計(jì)，規(guī)劃了系統(tǒng)實(shí)現(xiàn)的網(wǎng)絡(luò)體系結(jié)構(gòu)，并對(duì)其安全策略進(jìn)行了研究；利用成組技術(shù)及相似性原理，對(duì)客車零部件進(jìn)行了合理的分類，建立了客車零件數(shù)據(jù)庫(kù)；應(yīng)用文檔管理的方法，對(duì)客車產(chǎn)品開發(fā)過(guò)程中的文檔進(jìn)行了分類管理，建立了圖文檔數(shù)據(jù)庫(kù)；運(yùn)用 ASP 和 ODBC 技術(shù)對(duì)系統(tǒng)進(jìn)行了開發(fā)，實(shí)現(xiàn)了客車產(chǎn)品數(shù)據(jù)的管理和查詢；考慮到該系統(tǒng)是面向產(chǎn)品開發(fā)過(guò)程的數(shù)據(jù)管理，其安全性的重要，建立了用戶管理子系統(tǒng)，提高了系統(tǒng)的安全性。通過(guò)系統(tǒng)實(shí)例，給出了應(yīng)用本系統(tǒng)的過(guò)程與方法。 基于 Web 的面向產(chǎn)品開發(fā)過(guò)程的 客車產(chǎn)品數(shù)據(jù)管理系統(tǒng)的建立對(duì)客車企業(yè)的信息化建設(shè)具有重要的意義，是客車企業(yè)技術(shù)部門實(shí)現(xiàn)資源共享、數(shù)據(jù)繼承以及并行工程的基礎(chǔ)，它的實(shí)施將提升客車企業(yè)的技術(shù)管理水平，為企業(yè) CIMS 建設(shè)打好基礎(chǔ)。 關(guān)鍵詞 ：客車；產(chǎn)品開發(fā)；產(chǎn)品數(shù)據(jù)管理系統(tǒng)； Web； ASP ABSTRACT Analyzing the characteristic of the PDMS inside and outside china, through the factual demand of the bus vocation and based on the whole analysis of data information of the bus product developing process, using Web technology, distributed database, ObjectOriented technology, and group technology, the product data management system on bus oriented product developing process based on web is studied. Based on the demand analysis of the department of product development in bus enterprises, using the software engineering method, the system is designed. The work system structure of the system implement is laid out and the safety strategy of the system is studied. Using group technology and parability principle, the bus and its parts are classified in reason and bus database is created. Using the method of the document management, the documents in product developing process are managed and the documents database are constructed. Using ASP and ODBC technology, the system is developed and the product data of the bus is managed and searched. Because the data management system is oriented to the product developing process, the safety of it is very important. Users management subsystem is structured for enhancing the safety of the whole system. By the system example, the process and method of using the system is presented. It has important significance to creating the data management system oriented to product developing process based on the web for the digitalization of the bus enterprises and lays a foundation for the resource share, data inherit and CE of the technology department in bus enterprise. Implementing the system will upgrade the technology management and make the base of the CIMS of bus enterprise. Key words: Bus。 Product development。 Product Data Management System。 Web。 ASP 9 論文題 目： 熱軋帶鋼軋機(jī)工作輥熱應(yīng)力的研究 Thermal Stress Study of Work Roll in Hot Strip Mill 研究生姓名： 韓繼鋮 導(dǎo) 師姓 名： 任學(xué)平 教授 專 業(yè)： 機(jī)械電子工程 摘 要： 熱軋帶鋼軋機(jī)工作輥的熱變形直接影響著承載輥縫的形狀，從而影響著受軋帶鋼板型質(zhì)量的好壞。同時(shí)工作輥由于受周期性溫度的作用，特別是工作輥表面受到瞬態(tài)周期性的熱沖擊，內(nèi)部產(chǎn)生熱應(yīng)力。在這些周期性熱應(yīng)力的作用下，工作輥表面會(huì)產(chǎn)生熱疲勞，產(chǎn)生疲勞裂紋而導(dǎo)致工作輥斷裂或失效。因此，定性和定量確定熱應(yīng)力顯得尤為重要，準(zhǔn)確計(jì)算工作輥的溫度場(chǎng)是計(jì)算其熱應(yīng)力的前提。 在工作輥溫度場(chǎng)的求解計(jì)算中，由于熱傳導(dǎo)和熱變形行為的復(fù)雜性，求解工作輥溫度場(chǎng)一直是帶鋼軋制研究領(lǐng)域的 薄弱環(huán)節(jié)。工作輥溫度場(chǎng)的求解方法有解析法、數(shù)值法和實(shí)測(cè)法等，但由于熱軋工作輥工作條件極其惡劣和復(fù)雜，解析法和實(shí)測(cè)法等都沒有令人滿意的結(jié)果。因此該領(lǐng)域研究重點(diǎn)是數(shù)值法，包括差分法和有限元法。本文就是利用 ANSYS 有限元分析軟件對(duì)熱軋帶鋼工作輥的溫度場(chǎng)和熱應(yīng)力進(jìn)行解析。在溫度場(chǎng)的計(jì)算中采用 Solid70 熱單元進(jìn)行解析，對(duì)工作輥施加第三類邊界條件載荷，得出工作輥不同時(shí)間的 ISO 方向溫度圖和溫度等高線圖，以及工作輥表面不同深度下的溫度分布曲線圖。在工作輥熱應(yīng)力計(jì)算中，采用 Solid45 結(jié)構(gòu)單元進(jìn)行解析，把溫度作為載 荷施加到結(jié)構(gòu)單元上，得到工作輥徑向、軸向、剪切方向以及 Von Mises 等效熱應(yīng)力的熱應(yīng)力等值線分布圖。 本文還針對(duì)某廠 2025 熱軋帶鋼軋機(jī)工作輥進(jìn)行了計(jì)算機(jī)仿真，仿真結(jié)果與文獻(xiàn)中的實(shí)驗(yàn)數(shù)據(jù)有很好的一致性，從而驗(yàn)證了本文模型計(jì)算的正確性。其結(jié)果可以為板型控制和工作輥壽命計(jì)算分析提供理論依據(jù)。 關(guān)鍵詞 ：工作輥 溫度場(chǎng) 熱應(yīng)力 有限元 ABSTRACT The thermal deformation of hot rolled strip work roll influenced directly not only the shape of roll gap but also the quality of strip. It was shown that there were greater thermal stress formed within work roll with periodical temperature imposed, especially instantaneous thermal impact . The thermal stress led to thermal fatigue on roll surface. As a result, the fatigue crack made the roll break and disable. Therefore, It was importance that confirm the thermal stress qualitatively and quantificational and the accurate putation of temperature field was the base of the putation of thermal stress. 10 The putation on temperature field of work roll was a key because of the plexity of thermal conduction and thermal deformation during hot strip rolling. The algorithm included analytical method, numerical method and measurement method, and so on. The oute resulted from analytical method and measurement method were dissatisfied due to the wicked and plicated work condition of work roll. So researchers put an emphasis on the numerical method, which included difference method and FEM. This paper analyzed temperature field and thermal stress on the surface of hot rolled strip work roller with the help of ANSYS software. We imposed the third boundary condition load on work roll with Solid70 thermal element resolution during puting temperature field. The result showed that ISO direction temperature changes with time, temperature contour line, and temperature graph with different depth on the surface of work roll. Moreover, we got Von Mises equivalent thermal s