考虑表面形貌的风电主轴疲劳强度分析研究

黄敬博; 龙凯; 程正坤; 张锦华; 张惠

doi:10.19912/j.0254-0096.tynxb.2025-0505

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (8) : 621-626. DOI: 10.19912/j.0254-0096.tynxb.2025-0505

考虑表面形貌的风电主轴疲劳强度分析研究

黄敬博¹, 龙凯¹, 程正坤², 张锦华³, 张惠¹

作者信息 +

FATIGUE STRENGTH ANALYSIS OF WIND POWER SPINDLE CONSIDERING SURFACE TOPOGRAPHY

Huang Jingbo¹, Long Kai¹, Cheng Zhengkun², Zhang Jinhua³, Zhang Hui¹

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文章历史 +

摘要

为考察表面形貌对疲劳强度的影响,提出采用谐波叠加方式重构表面形貌,推导应力集中系数和疲劳缺口系数的解析表达式,结合DNVGL认证规范修正其中的经验公式项。以某风电机组主轴为研究对象,分别基于传统DNVGL规范和提出方法计算得到其累积疲劳损伤分布。结果表明,在特定参数下,两种方法的结果具有一致性。在相同表明粗糙度R_z下,所提方法揭示了疲劳损伤值随表面形貌波长的增大而减小,该结果证明实测构件表面形貌对疲劳强度定量分析具有必要性。

Abstract

To investigate the influence of surface topography on fatigue strength, a harmonic superposition method was proposed for reconstructing surface topography, the analytical expressions of stress concentration coefficient and fatigue notch coefficient were derived, and the empirical formula terms were revised in accordance with DNVGL certification. Based on the DNVGL specification and the proposed method, the cumulative fatigue damage distribution of a wind turbine mainshaft was calculated. The results indicate that within certain conditions, the results of the two approaches are congruent. Under the identical Rz, the fatigue damage value decreases as the surface topography wavelength increases, hence proving the imperative for quantitative analysis of fatigue strength based on measured surface topography.

导出引用

黄敬博, 龙凯, 程正坤, 张锦华, 张惠. 考虑表面形貌的风电主轴疲劳强度分析研究[J]. 太阳能学报. 2026, 47(8): 621-626 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0505

Huang Jingbo, Long Kai, Cheng Zhengkun, Zhang Jinhua, Zhang Hui. FATIGUE STRENGTH ANALYSIS OF WIND POWER SPINDLE CONSIDERING SURFACE TOPOGRAPHY[J]. Acta Energiae Solaris Sinica. 2026, 47(8): 621-626 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0505

中图分类号： TH12

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