Investigation on Stochastic Dynamic Model of Thin Membranes including Wrinkles, Slacks and Creases

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420851
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Aerospace engineering
• Research Institution: Tottori University
• Principal Investigator: IWASA TAKASHI 鳥取大学, 工学(系)研究科(研究院), 准教授 (90450717)
• Co-Investigator(Kenkyū-buntansha): FUJIGAKI MOTOHARU 福井大学, 大学院工学研究科, 教授 (40273875)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: ゴッサマー構造 / 振動応答 / 空間分布 / 確率過程 / 非接触全視野形状計測

Outline of Final Research Achievements

Vibration responses on thin membranes including wrinkles and creases are measured by photogrammetry using a grating projection method in order to clarify effects of the wrinkles and creases on the vibration responses of the thin membranes. And, a stochastic model of the spatial distribution of the power spectrum amplitude is also investigated. Results showed that the wrinkles appearing on thin membranes strongly affect the propagation phenomenon of bending waves on the thin membranes while the creases have an insignificant effect on the membrane vibration responses. In addition, the spatial distribution on the amplitude of the power spectrum density does not have an ideal model such as a traditional log normal distribution.

Free Research Field

航空宇宙工学