Accounting for Reliability in Complex Engineering Systems Design

考虑复杂工程系统设计中的可靠性

• 批准号: 0400081
• 负责人: Xiaoping Du
• 金额: --
• 依托单位: Missouri University of Science and Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-06-01 至 2009-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0400081&HistoricalAwards=false
• 关键词: Accounting; Reliability; Complex; Engineering; Systems

The objective of this grant is to develop methodologies and computationally practical approaches of reliability analysis and reliability-based design for complex engineering systems. The complexities include multiple interacting disciplines, large number of design variables, the mixture of multilevel details of uncertainty information, and the extensive use of computer simulations. The complexities have hampered the wide applications of reliability-based design in real-life engineering sytems design problems. This research will deal with the complexities at two complementary levels. At reliability analysis level, efficient and accurate reliability analysis methods, including Saddlepoint Approximations, will be developed. At reliability-based design level, strategies and mathematical formulations of reliability-based design models that can be solved efficiently with capabilities of dealing with the abovementioned complexities will be established. The proposed approaches will be demonstrated, verified, and validated through a reliability-based vehicle safety design problem by collaboration with industry. It is anticipated that the research results will provide industry efficient and practical tools for the implementation of reliability analysis and reliability-based design in complex engineering systems design with reduced product development times at reduced cost and risk. The research will also contribute computational methods to general engineering design under uncertainty, such as robust design and decision-based design under risk and uncertainty. In addition, the research results will contribute to education in the areas of engineering design theory and methodology, quality engineering, and systems engineering.

这项资助的目的是为复杂的工程系统开发可靠性分析和基于可靠性的设计的方法和计算实用方法。复杂性包括多个相互作用的学科，大量的设计变量，不确定性信息的多级细节的混合，以及计算机模拟的广泛使用。这些复杂性阻碍了可靠性设计在实际工程系统设计问题中的广泛应用。这项研究将在两个互补的层面上处理复杂性。在可靠性分析层面，将开发有效和准确的可靠性分析方法，包括鞍点近似法。在基于可靠性的设计水平，基于可靠性的设计模型，可以有效地解决与处理上述复杂性的能力的策略和数学公式将被建立。所提出的方法将通过与工业界合作的基于可靠性的车辆安全设计问题进行演示、验证和确认。 预计研究结果将提供工业有效和实用的工具，在复杂的工程系统设计的可靠性分析和基于可靠性的设计，以减少产品开发时间，降低成本和风险的实施。同时，本文的研究也将为不确定性条件下的一般工程设计，如风险和不确定性条件下的鲁棒设计和基于决策的设计提供计算方法。此外，研究成果将有助于工程设计理论和方法，质量工程和系统工程领域的教育。