The dual-axial resonance fatigue test provides for accurate and efficient testing of wind turbine blades through optimizations. However, the existing dual-axial test optimization does not yield an accurate test design because it compares the test loads that correspond to the mode shapes with the target loads that are aligned to the local chord axes. Therefore, this paper proposes equivalent applied loads to predict the flatwise and edgewise test loads by transferring the mode shapes to the local chord axes and using the linear damage accumulation rule. The application of the equivalent applied loads helps the dual-axial test optimization yield satisfactory test schemes without much additional computing time.The dual-axial resonance fatigue test provides for accurate and efficient testing of wind turbine blades through optimizations. However, the existing dual-axial test optimization does not yield an accurate test design because it compares the test loads that correspond to the mode shapes with the target loads that are aligned to the local chord axes. Therefore, this paper proposes equivalent applied loads to predict the flatwise and edgewise test loads by transferring the mode shapes to the local chord axes and using the linear damage accumulation rule. The application of the equivalent applied loads helps the dual-axial test optimization yield satisfactory test schemes without much additional computing time.

中文翻译：

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联合加载预测等效试验载荷提高风电叶片双轴共振疲劳试验精度

双轴共振疲劳测试通过优化为风力涡轮机叶片提供准确和有效的测试。然而，现有的双轴测试优化不会产生准确的测试设计，因为它将对应于振型的测试负载与与局部弦轴对齐的目标负载进行比较。因此，本文提出了等效应用载荷，通过将模态振型转移到局部弦轴并使用线性损伤累积规则来预测平面和边缘测试载荷。等效应用载荷的应用有助于双轴测试优化产生令人满意的测试方案，而无需太多额外的计算时间。双轴共振疲劳测试通过优化为风力涡轮机叶片提供准确和高效的测试。然而，现有的双轴测试优化不会产生准确的测试设计，因为它将对应于振型的测试负载与与局部弦轴对齐的目标负载进行比较。因此，本文提出了等效应用载荷，通过将模态振型转移到局部弦轴并使用线性损伤累积规则来预测平面和边缘测试载荷。等效应用载荷的应用有助于双轴测试优化产生令人满意的测试方案，而无需太多额外的计算时间。本文提出了等效应用载荷，通过将模态振型转移到局部弦轴并使用线性损伤累积规则来预测平面和边缘测试载荷。等效应用载荷的应用有助于双轴测试优化产生令人满意的测试方案，而无需太多额外的计算时间。本文提出了等效应用载荷，通过将模态振型转移到局部弦轴并使用线性损伤累积规则来预测平面和边缘测试载荷。等效应用载荷的应用有助于双轴测试优化产生令人满意的测试方案，而无需太多额外的计算时间。