本文選題：船用柴油機(jī) + 多學(xué)科設(shè)計(jì)優(yōu)化　； 參考：《東南大學(xué)》2015年博士論文

【摘要】：隨著現(xiàn)代船舶對船用柴油機(jī)綜合性能要求的提高,要求在其設(shè)計(jì)開發(fā)過程中綜合考慮各學(xué)科之間的耦合,提高船用柴油機(jī)的整體設(shè)計(jì)水平。本文針對船用柴油機(jī)關(guān)鍵件設(shè)計(jì)優(yōu)化問題,結(jié)合復(fù)雜系統(tǒng)建模理論,構(gòu)建了基于多學(xué)科設(shè)計(jì)優(yōu)化(Multidisciplinary Design Optimization, MDO)的船用柴油機(jī)關(guān)鍵件多學(xué)科協(xié)同設(shè)計(jì)總體技術(shù)框架,對其涉及的復(fù)雜系統(tǒng)建模與分解、多學(xué)科優(yōu)化模型處理、多目標(biāo)優(yōu)化決策等關(guān)鍵技術(shù)問題進(jìn)行了研究。在此基礎(chǔ)上,結(jié)合CAD/CAE/CAO一體化集成的產(chǎn)品協(xié)同設(shè)計(jì)思想,開發(fā)了面向船用柴油機(jī)多學(xué)科設(shè)計(jì)優(yōu)化的快速設(shè)計(jì)集成系統(tǒng)平臺(tái),從而有效地支持我國船用柴油機(jī)的設(shè)計(jì)和開發(fā)過程。論文開展的主要研究內(nèi)容和成果包括：(1)基于復(fù)雜系統(tǒng)建模理論,提出了船用柴油機(jī)關(guān)鍵件多學(xué)科協(xié)同設(shè)計(jì)優(yōu)化總體技術(shù)框架,分析了相關(guān)關(guān)鍵技術(shù),并建立了多層次的船用柴油機(jī)關(guān)鍵件多學(xué)科設(shè)計(jì)優(yōu)化模型及其求解策略。分析了船用柴油機(jī)結(jié)構(gòu)設(shè)計(jì)涉及的結(jié)構(gòu)強(qiáng)度、振動(dòng)和熱學(xué)等學(xué)科設(shè)計(jì)要求,并從“產(chǎn)品級-系統(tǒng)級-部件級-零件級”四個(gè)層次對其結(jié)構(gòu)設(shè)計(jì)的性能耦合與設(shè)計(jì)分析手段進(jìn)行解析。(2)針對復(fù)雜系統(tǒng)多學(xué)科設(shè)計(jì)優(yōu)化的學(xué)科分析模型的精度問題,提出了考慮復(fù)雜結(jié)構(gòu)結(jié)合面特性的多學(xué)科性能精細(xì)化仿真建模方法,并通過靜、動(dòng)力學(xué)實(shí)驗(yàn)對組合結(jié)構(gòu)的非線性特性進(jìn)行了系統(tǒng)研究；針對仿真分析模型的可重用性問題,提出了基于主模型的MDO多視圖建模方法,實(shí)現(xiàn)了基于多視圖模型的船用柴油機(jī)關(guān)鍵件多學(xué)科設(shè)計(jì)優(yōu)化。(3)針對多學(xué)科設(shè)計(jì)優(yōu)化的效率和精度的協(xié)調(diào)問題,提出了基于數(shù)據(jù)挖掘和知識(shí)發(fā)現(xiàn)的多學(xué)科優(yōu)化模型約簡方法。結(jié)合試驗(yàn)設(shè)計(jì)和代理模型技術(shù),完成了柴油機(jī)運(yùn)動(dòng)機(jī)構(gòu)多學(xué)科優(yōu)化模型的簡化,實(shí)現(xiàn)了船用柴油機(jī)等復(fù)雜產(chǎn)品多學(xué)科優(yōu)化過程的精度和效率的有效協(xié)調(diào)。(4)針對多學(xué)科設(shè)計(jì)優(yōu)化中的目標(biāo)決策問題,對經(jīng)典的多目標(biāo)進(jìn)化算法進(jìn)行了比較研究,選取典型測試函數(shù)對其Pareto最優(yōu)化解集的分布性、魯棒性和運(yùn)行效率等性能進(jìn)行綜合了評價(jià)；提出了基于穩(wěn)健性設(shè)計(jì)的多目標(biāo)組合優(yōu)化策略,提高了優(yōu)化算法的搜索效率和優(yōu)化解的可行性。以船用柴油機(jī)凸輪機(jī)構(gòu)的優(yōu)化設(shè)計(jì)為對象,驗(yàn)證了多目標(biāo)優(yōu)化策略和優(yōu)化目標(biāo)決策方法的有效性。(5)針對船用柴油機(jī)多學(xué)科設(shè)計(jì)優(yōu)化的多學(xué)科協(xié)同和過程集成問題,提出了面向多學(xué)科設(shè)計(jì)優(yōu)化過程的CAD/CAE/CAO一體化集成技術(shù),開發(fā)了船用柴油機(jī)多學(xué)科設(shè)計(jì)優(yōu)化系統(tǒng)平臺(tái),實(shí)現(xiàn)了復(fù)雜產(chǎn)品多學(xué)科設(shè)計(jì)優(yōu)化過程的集成和模型重用,優(yōu)化了國內(nèi)船用柴油機(jī)制造企業(yè)的設(shè)計(jì)開發(fā)模式。
[Abstract]:With the improvement of the comprehensive performance of marine diesel engine in modern ships, it is necessary to consider the coupling between various disciplines in the process of design and development, so as to improve the overall design level of marine diesel engine. Aiming at the design optimization of key parts of marine diesel engine, combined with the theory of complex system modeling, the overall technical framework of multidisciplinary collaborative design for key parts of marine diesel engine based on multidisciplinary design optimization and multidisciplinary Design Optimization, MDO) is constructed in this paper. The key technical problems such as modeling and decomposition of complex system, multi-disciplinary optimization model processing and multi-objective optimization decision are studied. On this basis, a rapid design integration system platform for marine diesel engine multi-disciplinary design optimization is developed in combination with the product collaborative design idea of CAD/CAE/CAO integration, which effectively supports the design and development process of marine diesel engine in China. The main research contents and achievements in this paper include: (1) based on the theory of complex system modeling, the overall technical framework of multidisciplinary collaborative design optimization for key parts of marine diesel engine is proposed, and the relevant key technologies are analyzed. A multi-level multi-disciplinary design optimization model for key parts of marine diesel engine and its solution strategy are established. The structural strength, vibration and thermal design requirements of marine diesel engine are analyzed. From the four levels of product level, system level, component level and part level, the paper analyzes the performance coupling and design analysis means of its structure design, and aims at the precision of the subject analysis model of multidisciplinary design optimization of complex system. In this paper, a modeling method of multi-disciplinary fine performance simulation considering the characteristics of complex structure interface is proposed, and the nonlinear characteristics of the composite structure are systematically studied by static and dynamic experiments, and the reusability of the simulation analysis model is discussed. A multi-view modeling method of MDO based on main model is proposed. The multi-disciplinary design optimization of key parts of marine diesel engine based on multi-view model is realized. The coordination of efficiency and precision of multi-disciplinary design optimization is realized. A multidisciplinary optimization model reduction method based on data mining and knowledge discovery is proposed. Combined with experimental design and agent model technology, the multi-disciplinary optimization model of diesel engine motion mechanism is simplified. An effective coordination of the precision and efficiency of the multidisciplinary optimization process for marine diesel engine and other complex products is realized. Aiming at the problem of objective decision making in multidisciplinary design optimization, the classical multi-objective evolutionary algorithm is compared and studied. The typical test function is selected to evaluate the distribution, robustness and running efficiency of the optimal solution set of Pareto, and a multi-objective combinatorial optimization strategy based on robust design is proposed. The search efficiency of the optimization algorithm and the feasibility of the optimal solution are improved. Taking the optimization design of marine diesel engine cam mechanism as an example, the effectiveness of multi-objective optimization strategy and optimization objective decision method is verified. An integrated CAD/CAE/CAO integration technology for multidisciplinary design optimization process is proposed. The platform of marine diesel engine multidisciplinary design optimization system is developed, and the integration and model reuse of complex product multidisciplinary design optimization process are realized. The design and development mode of domestic marine diesel engine manufacturing enterprises is optimized.
【學(xué)位授予單位】：東南大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2015
【分類號】：U664.121
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本文編號：1973051