...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advances in Structural Engineering >Numerical simulation of ice-induced vibrations of steady-state type
【24h】

Numerical simulation of ice-induced vibrations of steady-state type

机译：稳态型冰致振动的数值模拟

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Ice force is one kind of nonnegligible external loads that nature exerts on structures. The action of drifting ice floes may induce strong vibrations of offshore structures, and further reduce the structural safety and serviceability. The aim of this article is to develop a method to simulate the most dangerous situation during the interaction between ice and structure, that is, the ice-induced vibrations of steady-state type. A simulation methodology to realize structural steady-state vibration is proposed; it can simulate a special phenomenon of negative damping. The calculation of effective ice pressure is accomplished by an empirical formula which considers the dependence of the crushing strength on the ice velocity. The most important contribution of the simulation method is to capture the steady-state vibration phenomenon. The presented simulation methodology is conducted on the same model test introduced in a referenced study to verify the efficacy. Calculational examples show good agreements with the results of the model test, and the frequency contents of the generations coincide well with the targets. They directly prove the validity of the proposed simulation method. In addition, the numerical simulation method can be used in connection with finite element programs to perform a steady-state vibration analysis of offshore structures.
机译：冰力是自然施加在结构上的一种不可忽略的外部载荷。浮冰的作用可能引起海上结构的强烈振动，并进一步降低结构的安全性和可维修性。本文的目的是开发一种方法来模拟冰与结构之间相互作用过程中最危险的情况，即冰引起的稳态振动。提出了一种实现结构稳态振动的仿真方法。它可以模拟一种特殊的负阻尼现象。有效冰压的计算是通过一个经验公式完成的，该公式考虑了压碎强度对冰速的依赖性。仿真方法最重要的贡献是捕获稳态振动现象。所提供的仿真方法是在参考研究中引入的相同模型测试上进行的，以验证功效。算例表明与模型测试的结果吻合良好，并且各代的频率内容与目标吻合得很好。他们直接证明了该仿真方法的有效性。此外，数值模拟方法可以与有限元程序结合使用，以进行海上结构的稳态振动分析。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号