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大型服务器液冷系统的管道振动应力分析方法研究
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Research on vibration stress analysis of the pipeline in liquid cooling system of large-scale server
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    摘要:

    流体压力脉动致振是影响大型服务器液冷系统管道可靠性的重要因素之一。基于ANSYS workbench中的模块连接功能,提出一种液冷管道振动应力分析方法。首先在Static Structural模块中分析管道在稳定流体压力作用下的应力情况,然后在Harmonic Response模块中分析管道在流体压力脉动作用下的响应情况。测量实际管道的振动加速度,并结合有限元仿真计算结果进行对比分析,确定液冷管道中流体的压力脉动幅值。分析结果表明:弯管处是管道上应力最大的部位,应优先进行振动可靠性分析。该成果可为大型服务器液冷系统管道可靠性研究提供了一种可行的振动分析方法。

    Abstract:

    The vibration induced by fluid pressure pulsation is one of the important factors influencing the reliability of the pipelines in liquid cooling systems of largescale servers. In this paper, a method of vibration stress analysis of the pipelines is proposed. Based on the module connection function in ANSYS workbench, the stress of the pipeline under the influence of static fluid pressure was first analyzed by the Static Structural Module, and then the response of the pipeline under the influence of variable pressure was analyzed by the Harmonic Response Module. And the finite element simulation results were compared with the actual measurement results of the pipeline to confirm the fluid variable pressure in the pipeline. The analysis results show that the maximum stress comes into the elbows of the pipeline. So that the vibration reliability analysis of the elbows should be given priority. In short, a feasible vibration analysis method for the reliability of the pipelines in liquid cooling systems of largescale servers was provided.

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吴健生,陈扬枝,苏峰华.大型服务器液冷系统的管道振动应力分析方法研究[J].机床与液压,2017,45(6):20-26.
. Research on vibration stress analysis of the pipeline in liquid cooling system of large-scale server[J]. Machine Tool & Hydraulics,2017,45(6):20-26

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  • 在线发布日期: 2017-05-09
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