SGER: An Analytical Framework for a Novel Class of Complex Vibration Dampers

该奖项的研究目标是开发复杂减振器（cvd）的建模和设计方法。CVD由大量的光振动元件组成，这些元件连接到动力系统的一个小区域，以减轻由于复杂作用力的作用而造成的损伤。这项研究将产生一个分析框架，为预测模型提供基础，从而为广泛的应用设计策略。研究方法从相对简单的结构元件，如梁和板，受到理想的外力的保护，发展到更复杂的结构系统，如结构框架，受到高度复杂和不确定的力的作用。成果包括增加了对cvd在控制通过复杂的外部强迫向动力系统引入能量方面的作用的理解；定义cvd潜在用途的渐近区域的参数化，区分潜力最大的子区域；并以系统措施的识别为设计目的。如果成功，这项研究的结果将为一系列结构系统和强迫条件的新型损伤减轻系统的设计提供机会。一种可能的应用是减轻土木工程结构、高层建筑或桥梁受到地震力的破坏。另一个是提高车辆的耐撞性。还有一个是降低军用运输车辆内部的严重程度，使其受到附近爆炸的冲击波的影响。cvd对任何和所有这些应用的有效性的成功演示将传播给适当的工程社区进行商业开发。

The research objective of this award is to develop methods for modeling and design of complex vibration dampers (CVDs). A CVD consists of a large number of light vibration elements to be attached to a small region of a dynamical system to mitigate damage that would otherwise obtain because of the action of a complex forcing. The research will result in an analytical framework to provide the basis for prediction models, and thereby design strategies, for a broad range of applications. The research approach progresses from the protection of relatively simple structural elements, e.g. beams and plates, subject to idealized external forces to more complicated structural systems, e.g. structural frames, subject to highly complex and uncertain forces acting. Deliverables include an increased understanding of the role of CVDs in controlling the introduction of energy to a dynamical system by a complex external forcing; a parameterization of the asymptotic regime that defines the potential uses of CVDs, distinguishing sub-regimes for which the potential is greatest; and, the identification of system measures for the purpose of design. If successful, the results of this research will provide an opportunity for the design of a new class of damage mitigating systems, for a range of structural systems and forcing conditions. One possible application would be mitigating the damage of a civil engineering structure, a high-rise building or bridge, subject to an earthquake force. Another would be enhancing the crash worthiness of vehicles. Still another would be reducing the severity of the interior of a military transport vehicle, subject to the blast force of a nearby explosion. Successful demonstration of the efficacy of CVDs for any and all of these applications will be disseminated to the appropriate engineering community for commercial exploitation.