摘要
介绍颗粒阻尼技术的概念及发展历史,简要分析颗粒阻尼器(particle damper, PD)在机械、航空及航天领域中的研究现状,着重探讨其在土木工程领域的适用性及发展方向。按照颗粒阻尼器在土木工程中的工程需求及适用性,依据在振动方向上颗粒与容器壁之间是否存在间隙,将颗粒阻尼器划分为堆积型和非堆积型两类。分别系统地阐述堆积型与非堆积型颗粒阻尼器减振机理及性能的理论分析、数值模拟和试验研究以及影响其性能的因素。同时经过对比分析可知在土木工程领域,非堆积型颗粒阻尼器的减振效果显著优于堆积型颗粒阻尼器的减振效果。最后,指出适用于土木工程结构减震的颗粒阻尼器目前理论模型、设计方法及实际应用中存在的一些问题及不足,并对其研究与发展方向提出建议。
The concept and development history of particle damper(PD) technology is introduced, and the research status of particle damper in the field of machinery, aviation and aerospace is briefly analyzed.The applicability and development direction in the field of civil engineering is emphatically discussed.To meet the engineering requirements and applicability of particle damper in civil engineering, PD is divided into accumulative and non-accumulative particle dampers according to the situation whether there is a gap between particles and cavity walls in the direction of vibration.The damping mechanism, theoretical analysis, numerical simulation and experimental research of accumulative and non-accumulative particle dampers and the factors affecting their performance are systematically elaborated.Meanwhile, the comparative analysis shows that the damping effect of non-accumulative particle dampers is significantly better than that of accumulative particle dampers in the field of civil engineering.Finally, some problems and deficiencies in the current theoretical model, practical application and design method of particle dampers for vibration reduction of civil engineering structures are discussed, and suggestions for the research and development are proposed.
作者
闫维明
王宝顺
黄绪宏
Yan Weiming;Wang Baoshun;Huang Xuhong(Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit,Beijing University of Technology,Beijing 100124,China)
出处
《土木工程学报》
EI
CSCD
北大核心
2020年第5期32-41,共10页
China Civil Engineering Journal
基金
国家自然科学基金项目(51978021,51878017)
国家重点研发计划(2017YFC1500604,2017YFC1500603)。
关键词
颗粒阻尼器
堆积型
非堆积型
减振机理
减振性能
particle dampers
accumulation
non-accumulation
damping mechanism
damping performance
