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基于Von-Mises失效理论,利用Ansys有限元软件研究了张力腿平台结构强度和振动模态.结果表明:平台立柱迎风、背风侧分别发生拉伸、压缩变形,并在立柱与延伸腿交接面以上部分,随着高度增加,平台变形增大;立柱与x轴方向延伸腿交接处和平台顶端为平台危险区域;由于平台结构的对称性及低阶模态的危险性,为防止平台发生共振响应,应特别关注第1和第3阶模态特性;风轮转动和波浪运动均不会引起平台共振.
Based on the theory of Von-Mises failure, the strength and vibration modes of the tension leg platform are studied by using Ansys finite element software.The results show that: the platform upwind winds, the leeward side respectively tensile, compressive deformation, and in the column and the extending leg above the interface Part, as the height increases, the deformation of the platform increases. The column and the x-axis extend the leg junction and the top of the platform is the danger zone of the platform. Due to the symmetry of the platform structure and the danger of the low-order mode, in order to prevent the resonance response of the platform , Special attention should be paid to the first and third order modal characteristics; both rotor rotation and wave motion will not cause platform resonance.