The Optimization of the Damping Properties of Structural Components

结构构件阻尼性能的优化

• 批准号: 8560810
• 负责人: David Barrett
• 金额: $ 3.88万
• 依托单位: Materials Sciences Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1986
• 资助国家: 美国
• 起止时间: 1986-02-01 至 1986-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8560810&HistoricalAwards=false
• 关键词: Optimization; Damping; Properties; Structural; Components

This research is directed towards improving the damping of automotive structural and mechanical components. This is accomplished by exploiting the stress coupling of anisotropic composite material structural subsystems for use in laminated constructions. The subsystem is a sandwich component with elastic faces and viscoelastic core. A structural design is proposed which will increase the level of stressing and thus energy dissipation in the viscoelastic layers. Such a design would have widespread use as a tool for noise and vibration control. The success of the design will lead to a number of commercial applications both within and out of the automotive industry. A complete study to determine the potential of the damped sandwich subcomponents, to identify commercial applications, and to create appropriate design guidelines and analytical tools would require an extensive experimental and analytical program. An appropriate structural theory for the damped laminate analysis will be formulated. The solution of a specific practical problem will be found. Parametric studies will be performed and the merit of the proposed subcomponent will be established.

本研究旨在改善汽车结构和机械部件的阻尼。这是通过开发用于层压结构的各向异性复合材料结构子系统的应力耦合来实现的。该子系统是一个具有弹性面和粘弹性芯的夹层构件。提出了一种增加粘弹性层的应力水平和能量耗散的结构设计。这种设计将广泛用作噪声和振动控制的工具。该设计的成功将导致汽车行业内外的大量商业应用。一个完整的研究，以确定阻尼夹层子组件的潜力，确定商业应用，并创建适当的设计指南和分析工具，将需要一个广泛的实验和分析程序。将为阻尼层压分析制定一个合适的结构理论。将找到具体实际问题的解决方案。将进行参数研究，并确定所提议的子部件的优点。