摘要
采用有限元方法,基于Von-Mises失效理论,考虑平台结构阻尼和惯性载荷,利用ANSYS有限元软件和开源程序软件FAST分别研究了平台动态响应和结构应力。结果表明:螺旋侧板对Spar平台的自振频率没有明显影响;附加螺旋侧板可以有效减小平台在垂荡和纵摇方向的运动响应,但在纵荡方向上没有明显改善;螺旋侧板阻碍了海流的流动,增加了流动阻力,平台结构应力略有增加,且最大切应力约为最大等效应力的二分之一,但平台结构仍是安全的,而最大等效应力是影响平台安全稳定工作的关键。
By using the finite element method,based on Von-Mises failure theory,with the damping and inertial load of the structure of the platform being taken into consideration,the Ansys finite element software and the open source program software FAST were used respectively to study the dynamic response and structural stress of the platform. It has been found that a helical side plate has no conspicuous influence on the self-vibration frequency of the spar platform and the additionally installed helical side plate can effectively decrease the movement response along the vertical and horizontal vibration direction,however,achieve no obvious improvement in the horizontal vibration direction. The helical side plate will block the ocean current and increase the flow resistance. In addition,the structural stress of the platform will somewhat increase and the maximum shear stress will be approximately half of the maximum equivalent shear stress,which is critical for securing the safe and stable operation of the platform,however,the structure of the platform is still safe.
出处
《热能动力工程》
CAS
CSCD
北大核心
2016年第7期123-129,140,共7页
Journal of Engineering for Thermal Energy and Power
基金
上海市研究生创新基金项目(JWCXSL1402)
上海市教育委员会科研创新项目(13YZ066)
国家自然科学基金项目(51176129)
上海市科委项目(13DZ2260900)
关键词
漂浮式风力机
SPAR平台
结构优化
强度
动态响应
floating wind turbine
Spar platform
structural optimization
strength
dynamic response
