当前位置: X-MOL 学术Struct. Des. Tall Spec. Build. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Study on adaptive‐passive eddy current pendulum tuned mass damper for wind‐induced vibration control
The Structural Design of Tall and Special Buildings ( IF 2.4 ) Pub Date : 2020-08-04 , DOI: 10.1002/tal.1793
Liangkun Wang 1, 2 , Satish Nagarajaiah 2 , Weixing Shi 1 , Ying Zhou 1, 3
Affiliation  

Tuned mass dampers (TMDs) are used to control wind‐excited responses of high‐rise building as traditional vibration control devices. A TMD will have an excellent control effect when it is well tuned. However, a traditional passive TMD is sensitive to the frequency deviation; the mistuning in frequency and damping ratio both will decrease its control effect. In the previous research, an adaptive‐passive variable pendulum TMD (APVP‐TMD) is proposed, which can identify the TMD optimal frequency and retune itself through varying its pendulum length. However, it is found that the frequency variation will change the TMD damping ratio, and an unreasonable damping ratio will lead to a decrement in the robustness of a TMD. In this study, an adaptive‐passive eddy current pendulum TMD (APEC‐PTMD) is presented, which can retune the frequency through varying the pendulum length, and retune the damping ratio through adjusting the air gap between permanent magnets and conductive plates. An adjustable eddy current pendulum TMD (PTMD) is tested, and then, a single‐degree‐of‐freedom (SDOF) primary model with an APEC‐PTMD is built, and functions of frequency and damping ratio retuning are verified. The 76‐story wind‐sensitive benchmark model is proposed in the case study. The original model without uncertainty and ±15% stiffness uncertainty models are considered, and response control effects of different controllers are compared. Results show that because the APEC‐PTMD can both retune its frequency and damping ratio; it is more robust and effective than a passive TMD. It is also found that the APEC‐PTMD has a similar control effect with the active TMD, with little power consumption and better stability.

中文翻译:

用于风振控制的自适应无源涡流摆质量阻尼器的研究

调谐质量阻尼器(TMD)用于控制高层建筑作为传统振动控制设备的风振响应。调整好后的TMD将具有出色的控制效果。但是,传统的无源TMD对频率偏差很敏感。频率和阻尼比的不均会降低其控制效果。在先前的研究中,提出了一种自适应-被动可变摆TMD(APVP-TMD),它可以识别TMD的最佳频率并通过改变其摆长来进行自我调整。然而,发现频率变化将改变TMD的阻尼比,并且不合理的阻尼比将导致TMD的鲁棒性降低。在这项研究中,提出了一种自适应无源涡流摆TMD(APEC-PTMD),可以通过改变摆的长度来重调频率,并通过调节永磁体和导电板之间的气隙来重调阻尼比。测试了可调涡流摆式TMD(PTMD),然后构建了带有APEC-PTMD的单自由度(SDOF)主模型,并验证了频率和阻尼比调整的功能。该案例研究提出了76层的风敏基准模型。考虑没有不确定性的原始模型和±15%刚度不确定性模型,并比较了不同控制器的响应控制效果。结果表明,由于APEC-PTMD可以重调其频率和阻尼比;它比被动TMD更强大和有效。还发现,APEC-PTMD与有源TMD具有类似的控制效果,
更新日期:2020-08-04
down
wechat
bug