HXD3B型機車轉向架構架強度及模態分析研究

羅文昊1,2，張濤2

（1.蘭州交通大學 機電工程學院，甘肅 蘭州 730070；2.中車株洲電力機車有限公司，湖南 株洲 412001）

摘要：以HXD3B型電力機車轉向架構架為研究對象，基于TB/T 2368－2005標準、采用數值計算方法對其靜強度和疲勞強度進行研究，并分析其前6階模態及振型。結果表明：在各工況載荷下，構架的等效應力與其材料的許用應力相比，前者均小于后者，且其關鍵測點的應力坐標值均未超出其疲勞極限圖的允許范圍，因此構架應力范圍合理，滿足其強度要求；構架的自振頻率范圍為29.102～71.004 Hz，大于其共振頻率，且抗彎性能良好。通過強度評定和模態分析可確定構架的危險部位，并提出有效的結構簡化方法及數值模擬思路，為構架的進一步優化奠定了基礎。

關鍵詞：有限元分析；構架；靜強度；疲勞強度；模態分析

中圖分類號：U270.331 文獻標志碼：A doi：10.3969/j.issn.1006-0316.2022.05.005

文章編號：1006-0316 (2022) 05-0027-06

Fatigue Strength and Modal Analysis of the Bogie Frame of HXD3B Electric Locomotive

LUO Wenhao1,2，ZHANG Tao2

( 1.School of Mechanical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China; 2.CRRC Zhuzhou Locomotive Co., Ltd., Zhuzhou 412001, China )

Abstract：Taking the HXD3B electric locomotive bogie frame as the research object, based on the TB/T 2368-2005 standard, the static strength and fatigue strength is studied by using numerical calculation methods and the first 6 modes and vibration type are analyzed. The results show that the equivalent stress of the frame is smaller than  the allowable stress of its material under various load conditions. In addition, the stress coordinate values of the key measuring points do not exceed the allowable range of the fatigue limit diagram. Therefore, the stress range of the frame is reasonable and meets the strength requirements. The natural frequency range of the frame is 29.102~71.004 Hz, which is greater than its resonance frequency, and has good bending resistance. Through strength evaluation and modal analysis, the dangerous parts of the structure can be determined. Effective structure simplification methods and numerical simulation ideas are proposed, which lays the foundation for further optimization of the structure.

Key words：FEA；frame；static strength；fatigue strength；modal analysis

———————————————

收稿日期：2021-08-23

基金項目：甘肅省青年科技基金計劃項目（20JR10RA260）；甘肅省高等學校創新基金（2021A-038）；蘭州交通大學青年科學研究基金（2019015）

作者簡介：羅文昊（1996－），男，甘肅永昌人，碩士研究生，主要研究方向為轉向架振動疲勞，E-mail：lzlwh1015@163.com。