介绍了薄壁梁的新理论和新方法,并比较了它们的不同。这些理论大多都缺乏试验数据支持,无法验证其准确性和适用性,尤其对于非对称薄壁梁。进行了双向不对称薄壁开口梁的自振试验,提供试验数据,用来验证各理论、方法的准确性和适用性。基于Vlasov理论,提出了理论数值模型,并将它应用于试件。将该理论所得结果与试验结果、有限元程序所得结果进行比较。 Introduced a new theory and new method of thin-walled beams, and compared their differences. Most of these theories lack the experimental data support, can not verify the accuracy and applicability, especially for asymmetric thin-walled beams. The self-vibration test of bidirectional asymmetric thin-walled open beam was carried out, and the experimental data were provided to verify the accuracy and applicability of each theory and method. Based on Vlasov theory, a theoretical numerical model is proposed and applied to the specimen. The results of the theory and the experimental results, finite element program results were compared.