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Mathematical Modeling of Industrial Products for Longer Physical Lifetime toward Eco-Design

工业产品的数学建模，延长物理寿命，实现生态设计

基本信息

批准号：
16560716
负责人：
OKUMURA Susumu
金额：
$ 1.98万
依托单位：
The University of Shiga Prefecture
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2006
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16560716/
关键词：
Eco-Design Long Life Design Reuse Physical Life Functional Life Remanufacturing 長寿命設計

项目摘要

Remanufacturing is a new trend in the field of environmentally friendly products toward eco-design. A product undergoes functional failure or physical failure in a remanufacturing environment. A unit intended for reuse should be designed to be durable for a period equal to at least two functional lives through remanufacturing. Usage of excess materials can improve the strength of a reusable unit and give more than two physical lives ; however, such a method may increase the environmental impact due to the obsolescence of the reusable unit, which is an important factor to consider. This study aims to construct a mathematical model, which enables to evaluate environmental impact, and derive the optimal physical lifespan distribution of a reusable unit. In the first year, a mathematical model of a remanufacturing system has been constructed considering physical and functional failures. The incurred total environmental impact per unit time for a reusable unit is formulated as a minimization problem, by which the optimal design parameters of a reusable unit and the maximum number of times of reuse have been determined. In the second year, a mathematical model with consideration of the time series behavior of the value and demand of reusable units and sustainable products including reusable units has been developed. A discrete-event simulation model has been made for its purpose and statistical characteristics of the optimal physical life span distribution have been derived under various environmental conditions. In the last year, a method for setting the optimal physical life span of a reusable part has been proposed on the basis of the result obtained with life cycle simulation of environmentally-conscious products circulation and a nonlinear mathematical programming problem. The effectiveness of the proposed method has been examined by some numerical examples of actual mechanical element examples.

再制造是环保产品领域向生态化设计发展的新趋势。产品在再制造环境中经历功能故障或物理故障。打算重复使用的部件应通过再制造设计为至少相当于两个功能寿命的耐用期。使用多余的材料可以提高可重复使用单元的强度，并提供两个以上的物理寿命；但是，这种方法可能会由于可重复使用单元的过时而增加对环境的影响，这是需要考虑的重要因素。本研究旨在建立一个数学模型，以评估环境影响，并推导出可重复使用单元的最优物理寿命分布。在第一年，考虑了物理和功能故障，建立了再制造系统的数学模型。将可重复使用单元在单位时间内产生的总环境影响表示为最小化问题，确定了可重复使用单元的最优设计参数和最大重复使用次数。在第二年，建立了考虑可重复使用单元和包括可重复使用单元在内的可持续产品的价值和需求的时间序列行为的数学模型。为此，建立了离散事件仿真模型，导出了各种环境条件下最优物理寿命分布的统计特性。在过去的一年里，基于环保产品流通的生命周期模拟和一个非线性数学规划问题的结果，提出了一种设置可重复使用部件的最优物理寿命的方法。通过对实际机械单元算例的数值计算，验证了该方法的有效性。

项目成果

期刊论文数量（26）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Determination of Inspection Schedules of Equipment by Variational Method

变分法确定设备检验计划

DOI：
发表时间：
2006
期刊：
Mathematical Problems in Engineering 2006・Article ID 95843
影响因子：
0
作者：
中谷俊彦;遠藤真;山本桂一郎;Susumu Okumura
通讯作者：
Susumu Okumura

Physical Life Design of Reusable Unit with Consideration of Time Series Behavior of Its Value and Demand

考虑其价值和需求的时间序列行为的可重复使用单元的物理寿命设计

DOI：
发表时间：
2005
期刊：
Proceedings of EcoDesign2005:Fourth International Symposium on Environmentally Conscious Design and Inverse Manufacturing
影响因子：
0
作者：
中谷俊彦;遠藤真;山本桂一郎;Susumu Okumura;奥村進;Susumu Okumura
通讯作者：
Susumu Okumura

リユース対象ユニットの価値および需要の時系列変化を考慮した物理寿命設計

考虑价值的时间序列变化和重复使用单元的需求的物理寿命设计

DOI：
发表时间：
2005
期刊：
2005年度精密工学会春季大会学術講演会論文集
影响因子：
0
作者：
S.Nagata;ほか;S.Nagata et al.;S.Nagata ほか;奥村進;奥村進;Susumu Okumura;Susumu Okumura;奥村進;奥村進;Susumu Okumura;Susumu Okumura;K.Inai;Susumu Okumura;K.Ohya;Susumu Okumura;S.Ebisu;奥村進
通讯作者：
奥村進

Parameter Design Considering Statistical Characteristics of Quality Loss Function (in Japanese)

考虑质量损失函数统计特性的参数设计（日语）

DOI：
发表时间：
2005
期刊：
Proceedings of Japan Society for Precision Engineering 2005 Annual Spring Meeting (in Japanese)
影响因子：
0
作者：
S.Nagata;ほか;S.Nagata et al.;S.Nagata ほか;奥村進;奥村進;Susumu Okumura;Susumu Okumura;奥村進;奥村進;Susumu Okumura;Susumu Okumura;K.Inai;Susumu Okumura;K.Ohya;Susumu Okumura;S.Ebisu;奥村進;K.Ohya;奥村進;K.Inai;Susumu Okumura;K.Inai;Susumu Okumura;K.Ohya;Susumu Okumura;S.Ebisu;K.Inai;Susumu Okumura;K.Ohya;Susumu Okumura
通讯作者：
Susumu Okumura

Stochastic Nature and Environmental Impact of a Reusable Unit in a Remanufacturing Environment

再制造环境中可重复使用单元的随机性和环境影响