In the current scenario of global competition and short product life cycles, customer-defined satisfaction has attracted interest in artifact design. Accordingly, intelligent decision-making through multi-objective op...In the current scenario of global competition and short product life cycles, customer-defined satisfaction has attracted interest in artifact design. Accordingly, intelligent decision-making through multi-objective optimization has been proposed as an efficient method for human-centered manufacturing. However, previous vast researches on optimization have been mainly focused on optimization theory and optimization techniques and paid little interests on the process of problem formulation itself. In this paper, therefore, the authors present a total framework for supporting multi-objective decision making. Then, the authors try to solve the formulated multi-objective optimization problem that involves both qualitative and quantitative performance measures as a general consequence from the above procedure. Taking especially quality as a qualitative measure, the authors gave a new idea to evaluate the quality quantitatively. Additionally, to facilitate the portability of the proposed method in multidisciplinary decision-making environments, the authors implement the proposal algorithm in an Excel spreadsheet and validate the effectiveness of the approach through a case study.展开更多
为提高电动载货汽车轻量化水平,本文提出了一种车架与电池舱一体化(cell to frame-简称“CTF”)结构。首先建立对标车型车架有限元模型,计算了其静力学性能与自由模态,并通过自由模态试验验证有限元模型的准确性。然后采用道路实采的多...为提高电动载货汽车轻量化水平,本文提出了一种车架与电池舱一体化(cell to frame-简称“CTF”)结构。首先建立对标车型车架有限元模型,计算了其静力学性能与自由模态,并通过自由模态试验验证有限元模型的准确性。然后采用道路实采的多工况组合疲劳载荷谱在时域内运用名义应力法进行车架疲劳寿命分析。接着对经有限元分析验证合理的CTF结构初始设计进行试验设计并建立代理模型。最后采用全局响应面法进行优化设计,获得最佳轻量化方案。结果表明,优化设计后,CTF结构质量相较于传统的车架与电池舱分离设计结构轻量139.95 kg,轻量化率达14.09%,同时CTF结构力学性能与疲劳寿命均满足设计要求。展开更多
文摘In the current scenario of global competition and short product life cycles, customer-defined satisfaction has attracted interest in artifact design. Accordingly, intelligent decision-making through multi-objective optimization has been proposed as an efficient method for human-centered manufacturing. However, previous vast researches on optimization have been mainly focused on optimization theory and optimization techniques and paid little interests on the process of problem formulation itself. In this paper, therefore, the authors present a total framework for supporting multi-objective decision making. Then, the authors try to solve the formulated multi-objective optimization problem that involves both qualitative and quantitative performance measures as a general consequence from the above procedure. Taking especially quality as a qualitative measure, the authors gave a new idea to evaluate the quality quantitatively. Additionally, to facilitate the portability of the proposed method in multidisciplinary decision-making environments, the authors implement the proposal algorithm in an Excel spreadsheet and validate the effectiveness of the approach through a case study.
文摘为提高电动载货汽车轻量化水平,本文提出了一种车架与电池舱一体化(cell to frame-简称“CTF”)结构。首先建立对标车型车架有限元模型,计算了其静力学性能与自由模态,并通过自由模态试验验证有限元模型的准确性。然后采用道路实采的多工况组合疲劳载荷谱在时域内运用名义应力法进行车架疲劳寿命分析。接着对经有限元分析验证合理的CTF结构初始设计进行试验设计并建立代理模型。最后采用全局响应面法进行优化设计,获得最佳轻量化方案。结果表明,优化设计后,CTF结构质量相较于传统的车架与电池舱分离设计结构轻量139.95 kg,轻量化率达14.09%,同时CTF结构力学性能与疲劳寿命均满足设计要求。
