摘要
研究了海洋导管架自由振动及复杂载荷作用下的动力学行为。利用ANSYS软件建立海洋导管架平台三维模型,针对海洋导管架的结构及载荷特点,将导管架结构离散成空间梁和板有限元单元结构,采用结构模态分析和瞬态完全法,编程计算了平台结构在波浪载荷及冰载荷作用下的动力相应,给出了其自振频率和谐响应,绘制了海洋导管架不同部位的变形随载荷参数变化的特性曲线。结果表明,由于海洋导管架所处工作环境特殊,对其进行静动态校核,甚至疲劳分析是非常必要的。
The free vibration and dynamic response of offshore jacket platform subjected to complex loads were carried out using ANSYS software. By dispersing the platform into beam and plate finite elements, the model analysis methods and full transient method are used to carry out the response of the jacket platform, including its natural frequency, harmonic response and dynamic response under wave loads, ice loads, and characteristic curve for different parts of the jacket platform with the variable load parameter were given. The results show that it is necessary to carry out the static and dynamic checking for the offshore jacket platform in special working environment.
出处
《石油化工设备》
CAS
2011年第6期35-38,共4页
Petro-Chemical Equipment
基金
甘肃省自然科学基金项目(0803RJZA011)
关键词
海洋导管架
自由振动
复杂载荷
谐响应分析
有限元法
jacket platform
free vibration
complex load
harmonic response
finite element method
