嵌入式共固化阻尼复合材料结构力学性能研究

发布时间：2018-10-23 11:29

【摘要】：嵌入式共固化阻尼复合材料结构因其具有轻质、大阻尼、高刚度等特性,而在航空、航天、快速空间运载器等高科技领域有着广泛的应用前景。本文在前人对嵌入式共固化复合材料结构制作工艺研究的基础上,提出了穿孔阻尼结构和网格阻尼结构制作的新方法,并通过静力学性能实验探究了这种材料的拉伸和弯曲性能;通过动力学性能实验及有限元数值模拟方法对其动力学性能随几何结构参数变化规律进行探究,研究结论为嵌入式共固化复合材料结构动力学性能设计和进一步广泛应用奠定了坚实的基础。主要研究工作和创新点如下:(1)探索了用双面刷涂工艺制作嵌入式共固化连续阻尼复合材料结构的新工艺;提出了用层间过渡法制作嵌入式共固化穿孔阻尼和网格阻尼复合材料结构的新方法;(2)采用双面刷涂法制作了连续阻尼结构嵌入式共固化复合材料构件,并通过面内拉伸测试和层间拉伸性能测试,研究了该种复合材料静力学承载能力。(3)首次通过三点弯曲实验研究了阻尼层厚度和铺层角度对嵌入式共固化复合材料弯曲刚度的影响,获得了弯曲性能参数随几何结构参数的变化规律。(4)通过实验和有限元数值模拟的方法研究了不同的几何参数及铺层角度对嵌入式共固化网格阻尼结构和穿孔阻尼结构的动力学性能的影响规律,为复杂阻尼结构的动力学分析应用奠定基础。
[Abstract]:Because of its light weight, large damping and high stiffness, embedded co-curing damping composite structure has a wide application prospect in aviation, aerospace, rapid space vehicle and other high-tech fields. Based on the previous research on the fabrication technology of embedded co-solidified composite structure, a new method of making perforated damping structure and grid damping structure is proposed in this paper. The tensile and bending properties of the material were investigated by statics experiment, and the variation of dynamic properties with geometric structure parameters was investigated by means of dynamic performance experiment and finite element numerical simulation. The research results lay a solid foundation for the design and further application of the structural dynamic properties of embedded co-curing composites. The main research work and innovations are as follows: (1) A new process of making embedded co-curing continuous damping composite structure with double-side brush coating process is explored; In this paper, a new method to fabricate embedded co-solidified perforated damping and grid damping composite structures by interlaminar transition method is proposed. (2) continuous damping structure embedded co-curing composite structures are fabricated by double-side brush coating method. And through in-plane tensile test and interlayer tensile test, The statics bearing capacity of the composite is studied. (3) the influence of damping layer thickness and layer angle on the bending stiffness of embedded co-solidified composite is studied by three-point bending experiment for the first time. The variation of bending performance parameters with geometric structure parameters was obtained. (4) different geometric parameters and layering angles were studied by experiment and finite element numerical simulation to the embedded co-solidified grid damping structure and perforation damping. The influence of the dynamic performance of the structure, It lays a foundation for dynamic analysis and application of complex damped structures.
【学位授予单位】：青岛理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB33

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