NiCr3O5涂层对风洞引射器薄壁结构的振动特性影响OA
Effect of NiCr3O5 Coating on Vibration Characteristics of Thin-walled Structure of Wind Tunnel Ejector
为解决引射器管道因振动剧烈易产生疲劳裂纹的问题,研究 NiCr3O5 阻尼涂层对引射器管道薄壁构件振动特性的影响.采用自主研制的便携式超音速火焰喷涂装置,在风洞引射器管道焊缝处喷涂 NiCr3O5 阻尼涂层,对涂覆涂层前后引射器管道的固有特性、振动响应及阻尼进行试验研究和数值模拟,并与试验结果进行对比分析.结果表明:NiCr3O5 涂层能提高风洞引射器薄壁结构的阻尼性能,减缓因气流振动造成的疲劳破坏.
The influence of NiCr3O5 damping coating on the vibration characteristics of thin-walled components of ejector pipes was studied in order to solve the problem that the ejector pipes are prone to fatigue cracks due to severe vibration.NiCr3O5 damping coating was sprayed on the weld seam of the wind tunnel ejector pipe by using a self-developed portable high velocity oxygen fuel(HVOF)spraying device.The natural characteristics,vibration response and damping of the ejector pipe before and after coating were experimentally studied and numerically simulated,and the results were compared with the experimental results.The results show that the NiCr3O5 coating can improve the damping performance of the thin-walled structure of the wind tunnel ejector and reduce the fatigue damage caused by the airflow vibration.
余鑫;毛代勇;魏志;杨可朋
中国空气动力研究与发展中心高速所,四川 绵阳 621000中国空气动力研究与发展中心高速所,四川 绵阳 621000中国空气动力研究与发展中心高速所,四川 绵阳 621000中国空气动力研究与发展中心高速所,四川 绵阳 621000
机械制造
引射器管道薄壁结构减振涂层频响函数阻尼比
ejector pipethin-walled structuredamping coatingfrequency response functiondamping ratio
《兵工自动化》 2026 (3)
34-38,5
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