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.

这项研究旨在改善汽车结构和机械部件的阻尼。 这是通过利用层压结构中使用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组件。 提出了一种结构设计，该结构设计将增加应力水平，从而增加粘弹性层中的能量耗散。 这种设计将作为噪声和振动控制的工具得到广泛应用。 该设计的成功将带来汽车行业内外的大量商业应用。 确定阻尼夹层子组件的潜力、确定商业应用以及创建适当的设计指南和分析工具的完整研究需要广泛的实验和分析程序。 将制定适用于阻尼层压板分析的结构理论。 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组件的优点。