Joint Friction during Deployment of a Near-Full-Scale Tensegrity Footbridge
| Autor: | Ian F. C. Smith, Ann Christine Sychterz |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Friction modeling
Deployable structures Kinetic friction Engineering Full-scale testing Full scale 020101 civil engineering Context (language use) 02 engineering and technology Degrees of freedom (mechanics) Structural control 0201 civil engineering 0203 mechanical engineering Tensegrity GIS_PUBLI General Materials Science Joint (geology) Civil and Structural Engineering business.industry Mechanical Engineering Tensegrity structures Building and Construction Structural engineering 020303 mechanical engineering & transports Mechanics of Materials Collision response Reduction (mathematics) business |
| Zdroj: | Journal of Structural Engineering. 143 |
| ISSN: | 1943-541X 0733-9445 |
| DOI: | 10.1061/(asce)st.1943-541x.0001817 |
| Popis: | Most deployable structures, such as operable roofs and masts, move over one degree of freedom. This paper describes a structure that involves loosely coupled movement over several degrees of freedom. Analysis models of these structures are typically inaccurate. A source of inaccuracy is joint friction. Static and kinetic friction are studied experimentally and analytically. Simulations have been modified to account for these effects, and two methods are used to quantify friction effects. Friction has a significant effect on the movement of the tensegrity structure. Of two candidate parameters, cable tension and interior cable angle, cable angle is the factor that best characterizes friction effects. Values of static and kinetic friction coefficients are not significantly different in this context, and this leads to a reduction in the complexity of the friction model for simulation. Including friction effects in analysis decreases the difference between simulations and tests. Lastly, strut elements of the tensegrity structure are most critically affected by friction. (C) 2017 American Society of Civil Engineers. |
| Databáze: | OpenAIRE |
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