Modeling, simulation, and validation of a pendulum-pounding tuned mass damper for vibration control

Abstract

Summary This paper proposes a new passive control device, pendulum‐pounding tuned mass damper (PPTMD), to mitigate the response of lightly damped structures under various excitations. The proposed PPTMD consists of a tuned pendulum mass and a pounding boundary next to the equilibrium position of the pendulum mass. Moreover, a layer of viscoelastic materials called high energy‐dissipation rubber is attached on the pounding boundary to dissipate the vibration energy through impacts. A simplified impact force model was developed for modeling the pounding behavior of the high energy‐dissipation rubber pounding layer, and parameters in the simplified model were identified from free pounding experiments. The validation of the numerical method to simulate the dynamic behavior of the PPTMD was provided. The effectiveness of the PPTMD to control a single degree‐of‐freedom structure was numerically and experimentally studied under free vibration and forced vibration. The effects of the frequency tuning ratio, the coefficient of restitution, the excitation force amplitude, and the mass ratio were studied, respectively. Finally, the control performance of the PPTMD was compared with the classic tuned mass damper under free vibration, forced vibration, and several earthquake records. It is shown that the PPTMD can significantly increase the damping ratio of the controlled structure and effectively reduce the response of the controlled structure around the resonant frequency range. Furthermore, the PPTMD still achieves considerable control performance even if the frequency of the controlled structure varied in a wide range. Due to the different vibration control mechanism, the PPTMD outperforms the classic resonant frequency range in controlling the structural displacement response.

Swing Vibration Control of Suspended Structure Using Active Rotary Inertia Driver System: Parametric Analysis and Experimental Verification

“…Control techniques mainly include passive, active and semi-active control. Many studies and practices show that common passive control devices, such as the Tuned Mass Damper (TMD), have been commonly adopted due to their design simplicity, good control effectiveness and low cost [15][16][17][18][19][20]. The Particle Dampers (PDs) [21], Frictional Tuned Mass Damper (FTMD) [22,23] and Tuned Liquid Damper (TLD) [24,25] are also the most commonly used passive control techniques in earthquake engineering.…”

Negative Pressure Waves Based High Resolution Leakage Localization Method Using Piezoceramic Transducers and Multiple Temporal Convolutions

“…PZT transducers can exchange energy between mechanical energy and electrical energy [10,11], and therefore, they can work as an actuator to general stress or ultrasonic waves or a sensor to detect such waves [12,13,14,15]. PZTs are often used to build vibrations sensors, such as accelerometers, for vibration detection and control [16,17], as well as ultrasonic transducers [18,19,20] and acoustic emission probes [21,22,23] for SHM. Furthermore, this type of transducer can be bonded onto a structural surface or embedded in a concrete or composite structure during the structural fabrication process.…”

Low Temperature Influence on the Behavior of Viscoelastic Layer of the Pounding Tuned Mass Damper

“…In this case, the tuned mass behaves like a classical TMD, which suppress the vibration of the main mass by giving it a restoring force against its motion direction. However, if the motion of the main mass exceeds a certain level, the tuned mass will impact on the delimiter and kinetic energy will be dissipated during this collision process [33,34]. The PTMD has been applied for mitigating the undesired vibration of a variety of structures, including long span power transmission tower–line systems [33,35], subsea pipeline structures [36,37,38,39], offshore platforms [40,41], high rise buildings [42,43,44,45], long span bridges [46,47], suspended building piping systems [19], and traffic signal poles [48,49].…”