Abstract
In order to establish a conclusive result for the application of carbon fibre reinforced polymer (CFRP) cable as a tensegrity system for a suspen dome, the structural integrity assessment of the system, subjected to transient load, must be considered. This paper gives a preliminary assessment of the dynamic behavior of carbon fibre reinforced polymer cable in a suspen dome in comparison with that of the steel counterpart, using a small model of 4 m span and 0.4 m rise. A commercial finite element software namely ANSYS was used for the structure simulation in respect of the experimental design. The results from the simulation show that the carbon fibre reinforced polymer cable gives a reliable assessment as the steel counterpart. The natural frequencies of CFRP cables are higher than those of steel cables due to the CFRP cables’ high stiffness-to-weight ratio and less curvature under gravity loads. CFRP cables influence the structure with good stiffness which provides good vibration resistance. The results also indicate that from a technical point of view, carbon fibre reinforced polymer cables can perform better than steel cables as tensegrity system for a suspen dome. It is concluded that CFRP cables can be applied to replace steel ones as tensegrity system for a suspen dome.
Highlights
A suspen dome is a fascinating structure, based on its architectural design and construction point of view [1].this new structure was created by Kawaguchi and his team
The transient analysis is preferred for detailed investigation of dynamic response of the suspen dome because of the transient load excitation the structure resonates in its first damped natural frequency
The results of the eigen frequency analysis showed that carbon fibre reinforced polymer (CFRP) tensegrity system can withstand dynamic loads
Summary
A suspen dome is a fascinating structure, based on its architectural design and construction point of view [1].this new structure was created by Kawaguchi and his team. Long span structures are becoming more popular because of their many advantages which include efficient load resistance, light weight and smaller cross-sections These advantages can be improved on with better cable stiffness and strength-toweight ratios. The natural frequency mode is expected to be higher than that of steel cable Structure formed with such material should be capable of withstanding static and dynamic loads to give an acceptable static deformation and vibrations in the desired plane. Literature [1] indicates that the application of tensegrity system in a suspen dome has been limited to steel cables [8,9,10,11,12,13,14,15], including research findings on static, dynamics, stability, fire resistance, pretension and geometrical imperfection of the cable structure. Tensegrity systems have low self-weight which may cause the suspen dome to experience unfavourable vibration levels in response to loads
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