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Development of Portable Measurement Device for Membrane Structures

便携式膜结构测量装置的研制

基本信息

批准号：
13555156
负责人：
OHMORI Hiroshi
金额：
$ 8.83万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

项目摘要

Proposing device is that for measuring the tension stress of the structural membrane materials theoretically based upon the resonance oscillation phenomenon which is closely related to the magnitude of the tension stresses acting within the membrane materials. Some effective points for the device should be emphasized, that is, one point is that the device can measure the magnitude of the membrane stress without direct contact to the membrane surface and another one is that the device has possible potential to realize to obtain the magnitude of the tension stresses acting in two different directions separately. Fundamental new idea for the proposing device exists in the point where the resonance oscillation of the membrane materials caused by the sound energy is utilized. Possible contribution has been eagerly expected for design and construction engineering of membrane structures as there has been no effective measurement device instead of increasing needs and requirements.Experiments done under a grant for the present research has clearly shown the high possibility for realizing the proposing measurement device, where some points which must be investigated in the future research have been made clear :(1) the effect of the additional mass of the air contacting to the membrane surface on to the oscillation characteristics of the membrane material,(2) the effect of the softness of the rubber which is attached to the measurement box to surely make the physical boundary between the membrane and the measurement device.

提出了一种基于共振现象的结构膜材料拉应力测量装置，该装置的理论依据是膜材料内部作用的拉应力大小与共振现象密切相关。该装置的一些优点值得强调，一是可以不直接接触膜表面而测量膜应力的大小，二是有可能实现分别测量两个不同方向上的拉应力的大小。提出的装置的基本新思想存在于利用由声能引起的膜材料的共振振荡的点。膜结构的设计和施工工程一直缺乏有效的测量装置，而需求却越来越大，人们迫切希望能为膜结构的设计和施工工程做出贡献。在本研究的资助下进行的实验清楚地表明了实现所提出的测量装置的高可能性，其中一些在未来的研究中必须研究的问题已经明确：（1）与膜表面接触的空气的附加质量对膜材料的振荡特性的影响，（2）橡胶的柔软性的影响，所述橡胶附接到测量盒以确保在膜和测量装置之间形成物理边界。