复合材料科学与工程Issue(5)：25-29,35,6.DOI:10.19936/j.cnki.2096-8000.20240528.004
阻尼层复合材料夹芯梁的动力学性能
Dynamic properties of damping layer composite sandwich beam
摘要
Abstract
The partial differential vibration equations of damping layer composite sandwich beam were deduced combined with the principle of Hamiltons Principle.Then,these vibration equations were solved by means of the closed-form Navier method,and the calculated result was validated versus the data of the published literature.Fi-nally,the influence of changing parameters of the damping layer composite beam on its dynamic properties was stud-ied.The results show that:The natural frequency decreases gradually and the loss factor tends to go from ascent to descent with the increase of length of beam,and there is an optimal value of length in the dynamics design.The nat-ural frequency increases gradually and the loss factor tends to go from ascent to descent as the shear modulus of the damping layer is increased,and there is an optimal value of shear modulus in the dynamics design.With the in-crease of thickness of damping layer,the natural frequency decreases gradually,the first-order loss factor increases gradually and the other loss factors tend to go from descent to ascent.The loss factor of damping layer has less influ-ence on the natural frequencies.关键词
经典梁理论/铁木辛柯梁理论/阻尼层/复合材料梁/动力学性能Key words
classical beam theory/Timoshenko beam theory/damping layer/composite beam/dynamic properties分类
通用工业技术引用本文复制引用
赵晓军,杨怡婷,吴磊..阻尼层复合材料夹芯梁的动力学性能[J].复合材料科学与工程,2024,(5):25-29,35,6.基金项目
国家自然科学基金(52005376) （52005376）
2022年甘肃省高等教育教学成果培育项目(197) （197）
