中文摘要：

为大幅度地提高复合材料结构动力学性能，首先提出了新型多层阻尼薄膜嵌入的共固化复合材料结构，并按照玻璃纤维／环氧（5231／EW180B）预浸料固化工艺曲线将其制成嵌入式中温共固化多层阻尼薄膜复合材料试件；然后，探索使用模态应变能有限元数值模拟法对该结构的动力学性能进行了研究；最后，将结果与模态分析实验数据进行对比，并获得了多层阻尼薄膜嵌入的共固化复合材料结构模态参数随阻尼层的厚度、数量、位置和分布的变化关系。结果表明：多层阻尼薄膜嵌入的复合材料结构能显著提高整体结构的一阶模态损耗因子。研究结果为轻质大阻尼复合材料结构设计理论和制作工艺的进一步研究奠定了基础。

英文摘要：

In order to improve the dynamics property of composite structures significantly, a new co-cured compos- ite structure with multilayer damping membranes embedded was proposed firstly, and the specimens of the embed- ded medium-temperature co-cured multilayer damping membranes composites were manufactured according to the curing process curves of glass fiber/epoxy （5231/EW180B） prepreg. Then, the finite element numerical simulation method based on modal strain energy was explored to investigate the dynamics property of the structure. Finally, the results were compared with the experimental data of modal analysis, and the variation relationships of modal parameters of co-cured composite structure with multilayer damping membranes embedded versus the thickness, number, location and distribution of damping layers were obtained. The results indicate that the composite structure with multilayer damping membranes embedded can enhance the first order modal loss factor of whole structure great- ly. The research results lay the foundation of the further investigation of designing theory and manufacturing tech- nology of composite structure with lightweight and high damping.