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螺栓连接板抗共振最优布局研究
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国家自然科学基金项目(51565039);南昌航空大学研究生创新基金项目(YC2017018)


Study on the Best Bolt Layout of Joint Plate for Anti-resonance
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    摘要:

    针对螺栓组布局的不确定性对航空发动机机匣螺栓连接板模态频率的影响,研究螺栓连接板抗共振最优布局方法。基于ABAQUS软件和Python编程开发螺栓连接板的参数化模型;基于参数化模型,修改螺栓组布局的角度和半径,探讨布局变化对螺栓连接板模态频率的影响;基于布局角度和半径变化对模态频率的影响机制,提出一种螺栓连接板抗共振最优布局方法。结果表明:螺栓布局变化对螺栓连接板模态频率有一定的影响,而且各阶模态频率对螺栓布局敏感程度不同,某些阶次模态频率对螺栓布局很敏感,变化程度可达1.2%;随着螺栓布局的角度和半径的增大,某些阶次模态频率呈现出波峰波谷式有规律且周期性的变化,从避开结构共振的角度看,存在最优布局。研究结果为螺栓连接板的抗共振最优布局提供了参考。

    Abstract:

    According to the impacts of the uncertainties of the bolt group layout on the modal frequencies of the bolted joint plate in the aircraft engine,the best layout of bolt group of the bolted joint plate was studied. A parametric model of the bolted joint plate was developed by using ABAQUS and Python programming. The position angle and radius of the bolt group were modified to discuss the impacts of variation of the bolt layout on the modal frequencies of bolted joint plate based on the parametric model.Based on the impacts of bolt group layout angle and radius changing on the modal frequencies,one best layout design method for antiresonance of the bolted joint plate was proposed.Results indicate that the changing of layout of bolt group has a certain influence on the modal frequencies of the bolted joint plate,and the sensitivity degrees of the layout on the different modal frequencies are different.Some of the modal frequencies are very sensitive to the bolt group layout. It reaches to 1.2%.With the increasing of layout angle and radius of bolt group,some of modal frequencies vary periodically as the law of cresttrough mode.According to pointview of antiresonance,it exists a best bolt group layout.This research results provides reference to the best layout design of bolted joint plate for antiresonance.

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吴松建,刘文光.螺栓连接板抗共振最优布局研究[J].机床与液压,2020,48(10):164-168.
. Study on the Best Bolt Layout of Joint Plate for Anti-resonance[J]. Machine Tool & Hydraulics,2020,48(10):164-168

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  • 在线发布日期: 2020-08-19
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