Vibration Characteristic Analysis of a Coupling System for Compound Biaxial and Inter-Shaft Bearings by Kun Li, Hongchang Ding, Guohua Cao, Han Hou

“…Considering the moment of inertia, gyro effect, and structural damping, a one-dimensional beam model is used to perform the MATLAB numerical calculation of the coupling system to obtain the modal characteristics of the system, and based on the ANSYS simulation analysis of the three-dimensional model, a modal test is used to obtain the system modal shape and test frequency response function to verify the rationality of the coupling system model. …”
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Fluid-Induced Vibration Elimination of a Rotor/Seal System with the Dynamic Vibration Absorber by Qi Xu, Junkai Niu, Hongliang Yao, Lichao Zhao, Bangchun Wen

“…The appropriate natural frequency and damping ratio of the absorber can extend the complete elimination region of the instability vibration and postpone the occurrence of the instability vibration.…”
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Mechanical Parameters Effects on Acoustic Absorption at Polymer Foam by Lyes Dib, Samia Bouhedja, Hamza Amrani

“…The aim of this work is to study the quality of acoustic absorption in polyurethane foam and to show the importance of the structural vibration of this foam on the absorption by varying mechanical parameters (Young’s modulus E, Poisson’s coefficient ν, structural damping factor η, and the density ρ1). We calculated the absorption coefficient analytically using classical Biot formulation (us, uf) and numerically using Biot mixed formulation (us, p) in 3D COMSOL Multiphysics. …”
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Development of an Anchoring System for the Soft Asteroid Landing Exploration by Zhijun Zhao, Shuang Wang, Delun Li, Hongtao Wang, Yongbing Wang, Jingdong Zhao

“…It is mainly composed of penetrating unit, advancing unit, winding unit, damping unit, and so on. On the basis of the mechanical design, the resistance characteristic of the anchor body in penetrating process is analyzed, and the shape of the anchor tip is designed with the least resistance as the constraint. …”
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Allocation Optimization of Multi-Axis Suspension Dynamic Parameter for Tracked Vehicle by Qihui Ling, Juchuan Dai, Xingyun He, Shengzhao Chen, Zhewu Chen

“…By comparing the results obtained by the two methods, it is found that the performance of the suspension system can be improved effectively by optimizing the parameters of suspension stiffness and damping. Furthermore, the optimization of weight allocation based on expert knowledge is more effective. …”
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Normalized Study of Three-Parameter System in the Time Domain and Frequency Domain by Xiao-Lei Jiao, Yang Zhao, Wen-Lai Ma

“…For harmonic excitation, a comparison study is made on isolation performance between the case when the system has optimal damping and the case when regulatory factor is 1. …”
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Liquid Self-Balancing Device Effects on Flexible Rotor Stability by Leonardo Urbiola-Soto, Marcelo Lopez-Parra

“…An analytical model is introduced to study the effects of the active fluid mass fraction on a flexible rotor supported by flexible supports excited by bwo different destabilizing mechanisms; rotor internal friction damping and aerodynamic cross-coupling. It is found that the fluid radial and traverse forces contribute to the balancing action and to improve the rotor stability, respectively.…”
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Vibrational Energy Flow Analysis of Corrected Flexural Waves in Timoshenko Beam – Part I: Theory of an Energetic Model by Young-Ho Park, Suk-Yoon Hong

“…The results obtained by the derived energy flow model for simple finite Timoshenko beams are compared with those of the classical solutions for the Timoshenko beam, the energy flow solution, and the classical solution for the Euler-Bernoulli beam with various excitation frequencies and damping loss factors of the beam. In addition, the vibrational energy flow analyses of coupled Timoshenko beams are described in the other companion paper.…”
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Time-Varying Wind Load Identification Based on Minimum-Variance Unbiased Estimation by Huili Xue, Kun Lin, Yin Luo, Hongjun Liu

“…In order to study the stability of the proposed method, the effects of the errors in crucial factors such as natural frequency and damping ratio are discussed through detailed parametric analysis. …”
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Seismic Fragility Assessment of an Isolated Multipylon Cable-Stayed Bridge Using Shaking Table Tests by Yutao Pang

“…Numerous studies have concluded that the cable-stayed bridges are sensitive to earthquakes because they possess low damping characteristics and high flexibility. Moreover, cable-stayed bridges need to warrant operability especially in the moderate-to-severe earthquakes. …”
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Threshold for Chaos of a Duffing Oscillator with Fractional-Order Derivative by Wuce Xing, Enli Chen, Yujian Chang, Meiqi Wang

“…The effects of fractional-order parameters, the stiffness coefficient, and the damping coefficient on the threshold value of the chaotic motion are analytically discussed. …”
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Evaluation of Seismic Performance and Effectiveness of Multiple Slim-Type Damper System for Seismic Response Control of Building Structures by David Kim, Eun Hee Sung, Kwan-Soon Park, Jaegyun Park

“…The multiple slim-type damper (MSD) that consists of several small slim-type dampers and linkage units can control damping capacity easily by changing the number of small dampers. …”
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Performance of Variable Negative Stiffness MRE Vibration Isolation System by Run-pu Li, Cheng-bin Du, Fei Guo, Guo-jun Yu, Xiao-guo Lin

“…Magnetorheological elastomer (MRE) vibration isolation devices can improve a system’s vibration response via adjustable stiffness and damping under different magnetic fields. Combined with negative stiffness design, these MRE devices can reduce a system’s stiffness and improve the vibration control effect significantly. …”
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Seismic Response Reduction of Structures Equipped with a Voided Biaxial Slab-Based Tuned Rolling Mass Damper by Shujin Li, Liming Fu, Fan Kong

“…In this regard, a tuned rolling mass damper system (“TRoMaDaS”) is newly proposed, in combination with hollow slabs, to act as an ensemble passive damping device mitigating structural responses. The main advantage of this TMD configuration lies in its capacity to maintain architectural integrity. …”
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Human–Structure System Coupled Vibration Test and Human Body Model by Xiaotong Chen, Yaofa Lin, Mao Ye, Liqin Wu

“…As the number of individuals increases, the horizontal self-resonance frequency gradually decreases by approximately 0.2–0.3 Hz, whereas the damping ratio increases. Based on experimental data and horizontal human–structure models, the horizontal frequency ranges of the human body are found to be 0.236–3.748 Hz for front–back motion and 0.194–5.32 Hz for left–right motion. …”
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Energy-Optimized Consensus Formation Control for the Time-Delayed Bilateral Teleoperation System of UAVs by Hui-yu Sun, Guang-ming Song, Zhong Wei, Ying Zhang

“…To deal with the asymmetric time-varying delays in aerial teleoperation, the local damping is independently distributed on both sides to enforce consensus formation and force tracking of the master haptic device and the slave UAVs. …”
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Transmission Error Analysis and Disturbance Optimization of Two-Stage Spur Gear Space Driven Mechanism with Large Inertia Load by Jianfeng Ma, Chao Li, Lingli Cui

“…For the nonlinear disturbance actual issues of the model space drive mechanism two-stage spur gear system, a nonlinear dynamic model of 14-DOF (degree of freedom) two-stage spur gear with time-varying stiffness and damping was established. This model has been developed previously by the authors to access the large inertia on the dynamic response of spur gear space driving mechanism, and its effectiveness was proved by a motion simulation experiment. …”
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Greybody factor and quasinormal modes of scalar and Dirac field perturbation in Schwarzschild-de Sitter-like black hole in Bumblebee gravity model by Yenshembam Priyobarta Singh, Telem Ibungochouba Singh

“…Our findings show that the oscillation frequency and the damping rate decrease with increasing L. We analyze the Hawking temperature, power spectrum and sparsity of Hawking radiation. …”
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Adaptive Semiactive Cable Vibration Control: A Frequency Domain Perspective by Z. H. Chen, Y. Q. Ni

“…The results demonstrate the adaptivity in gain tuning of the AF-LQG control to target for the dominant cable mode for vibration energy dissipation, as well as its enhanced control efficacy over the optimal passive MR damping control and the T-LQG control for different excitation modes and damper locations.…”
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Research on the Vibration Insulation of High-Speed Train Bogies in Mid and High Frequency by Jia Liu, Xuesong Jin

“…In order to reduce the coupled resonance of the wheelset and the bogie frame, the effects of the stiffness and damping of the primary suspensions, wheelset axle radius, and bogie frame strength on the vibration transmissibility are discussed carefully. …”
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