新型管状增强超弹多孔结构设计制备及减振性能研究
Design,preparation and vibration damping performance of novel tubular reinforced superelastic porous structure
张晓旭 1杨金水 2付万葳 3李爽 4仝耀辉 4樊永乐 5林鑫 5赵松涛1
作者信息
- 1. 中国船舶集团有限公司第七○三研究所,黑龙江哈尔滨 150078
- 2. 哈尔滨工程大学航天与建筑工程学院,黑龙江哈尔滨 150001;哈尔滨工程大学青岛创新发展基地,山东青岛 266000
- 3. 哈尔滨工程大学动力与能源工程学院,黑龙江哈尔滨 150001
- 4. 哈尔滨工程大学青岛创新发展基地,山东青岛 266000
- 5. 哈尔滨工程大学航天与建筑工程学院,黑龙江哈尔滨 150001
- 折叠
摘要
传统的橡胶阻尼材料拥有较好的减振能力,但其力学承载能力不足.针对上述问题,基于仿生梯度设计思想,结合轻质多孔结构的优异力学性能和聚氨酯材料的高阻尼超弹性性能,设计一种具有优异力学承载性能和减振性能的新型管状增强超弹梯度多孔结构,开发出了模压灌注一体化成型工艺,实现了不同规格超弹梯度多孔结构减振器的制备.通过模态分析和频响试验获得结构的固有振动和减振性能,揭示了不同硬度聚氨酯材料、不同拓扑构型增强管等参数对结构减振性能的影响规律.结果发现,相比与其他结构,圆型增强结构在低频段具有较高的基频和较低的共振峰值,表现出结构高刚度高阻尼的优异性能;而在高频段三角型增强结构整体响应更低,减振性能较优异.
Abstract
Traditional rubber damping materials have better damping capacity,but their mechanical bearing capacity is insufficient.To solve the above problems,based on the bionic gradient design idea,combined with the excellent mechanical properties of lightweight porous structure and the high damping superelastic properties of polyurethane materials,a new tu-bular reinforced superelastic gradient porous structure with excellent mechanical load bearing properties and vibration damp-ing properties is designed,an integrated molding process of molding and perfusion is developed.The preparation of different sizes of superelastic gradient porous structure shock absorbers is realized.Through modal analysis and frequency response experiment,the natural vibration and vibration damping properties of the structure were obtained,and the effects of different hardness polyurethane materials and different topological configuration reinforced tubes on the vibration damping properties of the structure were revealed.The results show that compared with other structures,the circular reinforced structures have higher fundamental frequency and lower resonance peak value in low frequency band,which shows excellent performance of high stiffness and high damping.In the high frequency band,the triangular reinforced structure has lower overall response and better vibration damping performance.
关键词
多孔结构/聚氨酯/制备工艺/力学性能/减振Key words
porous structure/polyurethane/preparation process/mechanical properties/vibration damping引用本文复制引用
基金项目
国家自然科学基金资助项目(12172098)
出版年
2024
NETL
NSTL
万方数据