Vibration analysis of nonsmooth structural systems

非光滑结构系统的振动分析

• 批准号: 421542-2012
• 负责人: Legrand, Mathias
• 金额: $ 1.82万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=596523
• 关键词: Vibration; analysis; nonsmooth; structural; systems

The objective of this research is to provide improved understanding, modeling, and prediction of the vibration response of complex possibly structural systems. This will be accomplished by developing innovative numerical methods capable of tackling the growing complexity of dynamical phenomena resulting from optimized designs and severe operational environments. Bladed disk systems found in aircraft and helicopter engines will serve as the preferred industrial applications of this analytical and computational program. Meticulous attention will paid to the numerical treatment of the vibrations of systems involving nonsmooth interface quantities, i.e. unilateral contact and friction conditions. Other modeling complexities will include large model size and time-delayed phenomena. To this end, the proposed Discovery Grant application will focus on two major thrusts:

这项研究的目的是提高对可能复杂的结构系统的振动响应的理解、建模和预测。这将通过开发创新的数值方法来实现，这些方法能够解决因优化设计和恶劣的操作环境而导致的日益复杂的动态现象。飞机和直升机发动机中的叶片盘系统将成为该分析和计算程序的首选工业应用。将仔细关注涉及非光滑界面量（即单侧接触和摩擦条件）的系统振动的数值处理。其他建模复杂性包括大模型尺寸和延时现象。为此，拟议的发现补助金申请将重点关注两大重点：