针对产品服务系统(Product Service System,PSS)方案评价的风险性和不确定性,提出结合累积前景理论的拓展TOPSIS方法对PSS设计方案进行评价。采用区间直觉模糊数获取并表达专家对候选方案的评价信息;将区间直觉模糊相对熵作为距离的度量...针对产品服务系统(Product Service System,PSS)方案评价的风险性和不确定性,提出结合累积前景理论的拓展TOPSIS方法对PSS设计方案进行评价。采用区间直觉模糊数获取并表达专家对候选方案的评价信息;将区间直觉模糊相对熵作为距离的度量,将决策矩阵转化为相对于参照点的损益决策矩阵,基于累积前景理论计算每个方案的指标综合前景值;以正理想前景值和负理想前景值为参考点,采用基于相对熵的TOPSIS方法对候选PSS方案进行排序,最后通过一个算例说明了该方法的可行性和有效性。展开更多
A hybrid conceptual design approach was introduced in this study to develop a conceptual design of oil palm polymer composite automotive crash box(ACB). A combination of theory of inventive problem solving(TRIZ), morp...A hybrid conceptual design approach was introduced in this study to develop a conceptual design of oil palm polymer composite automotive crash box(ACB). A combination of theory of inventive problem solving(TRIZ), morphological charts and biomimetics was applied where the foremost requirements in terms of the material characteristics, function specifications, force identification, root cause analysis, geometry profile and design selection criteria were considered. The strategy was to use creations of nature to inspire five innovative conceptual designs of the ACB structure and the AHP method was applied to perform the pairwise analysis of selecting the best ACB conceptual design. A new conceptual design for a composite ACB was conceived bearing in mind the properties of natural fibre, unlike those of conventional materials such as steel alloys and aluminium alloys. The design with the highest ranking(26.6 %) was chosen as the final conceptual design, which was the one with a honeycomb structure for the outermost profile, reinforced with a spider web structure inside the part, supported by fibre foam structure extracted from the woodpecker sponge tissue at the centre to maximize the energy absorption capability. The new design could solve the problem of bending collapse which is a major cause of failure to absorb maximum impact energy for ACB during collision. However, the final conceptual design will still need several modifications for production and assembly purposes, which will be completed in a further study.展开更多
文摘针对产品服务系统(Product Service System,PSS)方案评价的风险性和不确定性,提出结合累积前景理论的拓展TOPSIS方法对PSS设计方案进行评价。采用区间直觉模糊数获取并表达专家对候选方案的评价信息;将区间直觉模糊相对熵作为距离的度量,将决策矩阵转化为相对于参照点的损益决策矩阵,基于累积前景理论计算每个方案的指标综合前景值;以正理想前景值和负理想前景值为参考点,采用基于相对熵的TOPSIS方法对候选PSS方案进行排序,最后通过一个算例说明了该方法的可行性和有效性。
基金Project(6369107)supported by the Ministry of Higher Education,Malaysia
文摘A hybrid conceptual design approach was introduced in this study to develop a conceptual design of oil palm polymer composite automotive crash box(ACB). A combination of theory of inventive problem solving(TRIZ), morphological charts and biomimetics was applied where the foremost requirements in terms of the material characteristics, function specifications, force identification, root cause analysis, geometry profile and design selection criteria were considered. The strategy was to use creations of nature to inspire five innovative conceptual designs of the ACB structure and the AHP method was applied to perform the pairwise analysis of selecting the best ACB conceptual design. A new conceptual design for a composite ACB was conceived bearing in mind the properties of natural fibre, unlike those of conventional materials such as steel alloys and aluminium alloys. The design with the highest ranking(26.6 %) was chosen as the final conceptual design, which was the one with a honeycomb structure for the outermost profile, reinforced with a spider web structure inside the part, supported by fibre foam structure extracted from the woodpecker sponge tissue at the centre to maximize the energy absorption capability. The new design could solve the problem of bending collapse which is a major cause of failure to absorb maximum impact energy for ACB during collision. However, the final conceptual design will still need several modifications for production and assembly purposes, which will be completed in a further study.
