...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of structural stability and dynamics >Dynamic Characteristics of Fluid-Conveying Pipes with Piecewise Linear Support
【24h】

Dynamic Characteristics of Fluid-Conveying Pipes with Piecewise Linear Support

机译：分段线性支撑输液管的动力特性

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

For the analysis of dynamic characteristics of fluid-conveying pipes with piecewise linear support, a fluid-structure coupling dynamic model based on the finite element method is proposed. A user-defined pipe element based on Euler-Bernoulli beam is developed for modeling the pipes, considering the dynamic flow conditions. A nonlinear spring element is utilized to model the clamp between the pipe and the base. The dynamic responses of the system are obtained through the direct time integration. The stiffness of the clamp support is investigated by the analytical method and the experimental method, in which it is found that the clamp stiffness is piecewise linear. For different pipe geometries the user-defined element model, analytical model and measurement data are compared. The results show high quality of the element developed in this paper. Finally, the dynamic characteristics of the pipe system with piecewise linear support subjected to base harmonic excitation are calculated and the effects of the system parameters on pipe behaviors have also been studied. As a consequence, the model proposed in this paper can represent the piecewise linear nonlinearity of the clamp support and be used conveniently to investigate the effects of the fluid-structure coupling on the system behaviors.
机译：为了分析具有分段线性支撑的输油管道的动力特性，提出了基于有限元方法的流固耦合动力学模型。考虑到动态流动条件，开发了基于Euler-Bernoulli梁的用户定义的管道元素以对管道进行建模。利用非线性弹簧元件对管道和底座之间的夹具进行建模。系统的动态响应是通过直接时间积分获得的。通过分析方法和实验方法研究了夹具支撑的刚度，发现夹具刚度是分段线性的。对于不同的管道几何形状，将比较用户定义的元素模型，分析模型和测量数据。结果表明本文开发的元素质量很高。最后，计算了具有分段线性支撑的管系统在基础谐波激励下的动态特性，并研究了系统参数对管性能的影响。因此，本文提出的模型可以表示夹具支座的分段线性非线性，并可以方便地用于研究流固耦合对系统性能的影响。

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