• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference 2006 vol.4 pt.A: Fluid-Structure Interaction >NON-LINEAR TIME DOMAIN METHOD TO PREDICT TUBE-TO-TUBE SUPPORT PLATE FRETTING WEAR IN STEAM GENERATORS
【24h】

NON-LINEAR TIME DOMAIN METHOD TO PREDICT TUBE-TO-TUBE SUPPORT PLATE FRETTING WEAR IN STEAM GENERATORS

机译：非线性时域法预测汽轮发电机管间支撑板微动磨损

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

Fretting-wear of nuclear heat exchanger equipment is addressed at the design stage to demonstrate that the tube and tube support plate components will meet their design life. AREVA has developed a method to predict the progression of fretting-wear using a combination of the predicted work-rates determined from the non-linear interaction of the tube and tube support plates caused by turbulence-induced vibration and the forces associated with fluid-elastic instability. The wear rate is then computed based upon the work-rate and the experimentally determined wear coefficient of the material pair. This solution is performed with a time domain analysis using a time history modal superposition method. Time history forcing functions are first obtained by the inverse Fourier transform of the power spectral density function used in classical turbulence-induced vibration analysis. The fluid-structure coupling force, which is dependent on the cross-flow velocity, is linearly superimposed onto the turbulence forcing function. The tube responses are then computed by direct integration in the time domain. The results of the analysis show that the highest work-rates occur at the design tube-to-tube support plate clearance configuration and become progressively lower over the life of the heat exchanger. The work-rates and the turbulence-induced vibration response of the tube are computed at several mid-life time steps based upon the increased tube-to-tube support plate clearances resulting from the tube wear.
机译：在设计阶段就解决了核热交换器设备的微动磨损问题，以证明管子和管子支撑板组件将达到其设计寿命。 AREVA开发了一种方法来预测微动磨损的进展，该方法结合了预测的工作速率，这些工作速率是由管和管支撑板的非线性相互作用确定的，该非线性相互作用是由湍流引起的振动引起的，以及与流体弹性相关的力不稳定。然后根据工作速率和实验确定的材料对的磨损系数计算磨损率。通过使用时程模态叠加方法的时域分析来执行此解决方案。时程强迫函数首先通过经典湍流引起的振动分析中使用的功率谱密度函数的傅立叶逆变换获得。取决于横流速度的流固耦合力线性叠加在湍流强迫函数上。然后通过在时域中直接积分来计算电子管响应。分析结果表明，最高的工作速率出现在设计的管对管支撑板间隙配置中，并且在热交换器的整个使用寿命中逐渐降低。在管的工作周期和湍流引起的振动响应的计算中，根据管磨损造成的管对管支撑板间隙的增加，在使用寿命的几个中间阶段进行计算。

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