000019009 001__ 19009
000019009 005__ 20170118182255.0
000019009 04107 $$aeng
000019009 046__ $$k2017-01-09
000019009 100__ $$aLu, Zheng
000019009 24500 $$aAn Experimental Investigation Into the Use of  Particle Tuned Mass Damper

000019009 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019009 260__ $$b
000019009 506__ $$arestricted
000019009 520__ $$2eng$$aA particle tuned mass damper (PTMD) system is the combination of a traditional tuned mass damper (TMD) and a particle damper (PD). As we all know, if properly tuned, the TMD can effectively suppress excessive vibrations. However, the very narrow band of suppression frequency, ineffective reduction of non-stationary vibrations and sensitivity problems due to mistuning are the inherent limitations of a conventional TMD. On the other hand, particle damping technology dissipates the vibration energy by collisions and friction between particles or between particles and their container. The advantages of slight change to the primary structure, wide reduction frequency band and insensitivity to the environment changing make the particle damper preferable to the traditional passive control devices. It has been widely researched and applied in machinery and aviation engineering and the damping performance is favorable, but the research in civil engineering is just in the early stage. The novel PTMD can take advantage of them, leading to a potential effective damper device in civil engineering area. This paper presents a systematic experimental investigation of the effects of particle tuned mass damper attached to a multi degree of freedom (MDOF) system under different dynamic loads (real onsite earthquake excitations and artificial waves). A series of shaking table tests of a five story steel frame with the particle tuned mass damper system are carried out to evaluate the performance, and the influence of some parameters (auxiliary mass ratio, suspending length, gap clearance, mass ratio of particles to the total auxiliary mass, frequency characteristic and amplitude level of input) on the vibration control effects was investigated. It is shown that particle tuned mass damper have good performance in reducing the response of structures under dynamic loads. It can effectively control the fundamental mode of the MDOF primary system; however, the control effect for higher modes is variable. It is also shown that a certain mass ratio of particles leads to a better vibration attenuation effect. Properly designed particle tuned mass damper can effectively reduce the response of lightly damped MDOF primary system with a small weight.

000019009 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019009 653__ $$aParticle tuned mass damper; particle damper; tuned mass damper; passive control

000019009 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019009 720__ $$aLu, Zheng$$iZhang, Dingchang$$iChen, Xiaoyi$$iLu, Xilin
000019009 8560_ $$ffischerc@itam.cas.cz
000019009 8564_ $$s340768$$uhttps://invenio.itam.cas.cz/record/19009/files/268.pdf$$yOriginal version of the author's contribution as presented on USB, paper 268.
000019009 962__ $$r16048
000019009 980__ $$aPAPER