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为了研究纱线的固有频率，采用光谱仪及声源等设备搭建纱线振动检测装置，通过声音非接触式激励纱线振动，分析3种具有不同杨氏模量的涤纶纱线在不同纱线长度和拉伸力条件下受到声音激励后的共振现象，使用快速傅里叶变换法（FFT）得出纱线的固有频率。结果表明：纱线长度、拉伸力和杨氏模量对纱线的固有频率存在显著影响；纱线越长，固有频率越小；拉伸力越大，固有频率越大；纱线模量越大，固有频率越大；本文实验条件下，杨氏模量为2.3 GPa的涤纶纱线长度为30 cm时在9.8 cN条件下固有频率最大，为135 Hz。
Abstract：In order to study the natural frequency of yarn, a vibration detection device for yarn was built using a spectaometer and sound sources. Through the non-contact acoustic excitation of yarn vibration, the resonance phenomenoa of polyester yarns with three different Young′s moduli were analyzed under various yarn lengths and tensile forces when excited by sound. The fast Fourier transform(FFT) method was used to obtain the natural frequency of the yarns. The results show that there is a significant effect of yarn length, tensile force and Young′s modulus on the natural frequency of the yarns. The longer the yarn is, the lower the natural frequency will be. The greater the tensile force of the yarn is, the higher the natural frequency will be. The greater the modulus of the yarn is, the higher the natural frequency will be. Under the experimental conditions in this paper, the natural frequency of the polyester yarn with a Young′s modulus of 2.3 GPa reaches its maximum value of 135 Hz at a length of 30 cm and a tension of 9.8 cN.
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基本信息:
中图分类号:TS151
引用信息:
[1]张美玲,吴培铭,陶落雁,等.基于声音激励的涤纶纱线固有频率分析[J].天津工业大学学报,2026,45(02):31-38.
基金信息:
技术创新引导专项资助项目（20YDTPJC01380）
2026-04-25
2026-04-25