类蜂窝结构的面内冲击特性研究

发布时间：2018-05-19 19:47

本文选题：类蜂窝 + 六边形蜂窝　；参考：《西安交通大学学报》2017年03期

【摘要】：以类蜂窝结构为研究对象,讨论了不同冲击速度作用下该结构的面内冲击力学性能及能量吸收能力,并与传统的六边形蜂窝结构在不同方向冲击作用下的变形模式、比吸收能量进行了对比。研究结果表明:在低速冲击下,类蜂窝结构先后表现出V形、X形、K形及I形等局部变形特征;在中高速冲击下,类蜂窝结构中的六边形与四边形胞元交替压溃,并从冲击端的I形局部变形逐步扩展到固定端;随着冲击速度增大,类蜂窝表现出更强的能量吸收能力,且与六边形蜂窝相比,其能量吸收过程不受冲击方向的影响,更加稳定可靠。研究结论可望为进一步研究同一结构模型不同布置方式的类蜂窝结构的动态冲击特性提供依据。
[Abstract]:The in-plane impact mechanical properties and energy absorption capacity of the honeycomb structure under different impact velocities are discussed, and the deformation modes of the hexagonal honeycomb structure under different impact directions are discussed. The specific absorption energy is compared. The results show that the honeycomb structures exhibit local deformation characteristics such as V shape X shape K shape and I shape successively under low speed impact, and the hexagonal and quadrilateral cells in the honeycomb structure are crushed alternately under the medium and high speed impact. With the increase of the impact velocity, the honeycomb has a stronger energy absorption ability, and the energy absorption process is not affected by the impact direction compared with the hexagonal honeycomb. More stable and reliable. The results are expected to provide a basis for further study on the dynamic impact characteristics of honeycomb like structures with the same structure model.
【作者单位】：三峡大学水电机械设备设计与维护湖北省重点实验室;三峡大学机械与动力学院;新能源微电网湖北省协同创新中心(三峡大学);
【基金】：国家自然科学基金资助项目(51305232) 水电机械设备设计与维护湖北省重点实验室开放基金资助项目(2012KJX07)
【分类号】：TB383.4

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