Article
Engineering, Mechanical
Chao Sun, Chi Liu, Xu Zheng, Jun Wu, Zunming Wang, Yi Qiu
Summary: Most previous studies on the biodynamics of the seated human body focused on vertical vibration in the sagittal plane. However, this study used combined tri-axial translational vibration excitation to investigate the biodynamics in both sagittal and coronal planes. They developed an analytical model to represent the biodynamic responses of the seated human body to this type of vibration.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Engineering, Industrial
Mael Amari, Nellie Perrin
Summary: Mobile machinery operators are exposed to whole-body vibrations and unfavourable body posture, which may have adverse effects on the spine. This study provides measurements of apparent mass and seat-to-head transmissibility in different postures, aiming to understand the effects of vibration on the spine.
Article
Engineering, Mechanical
Junsun Yoo, Seonbin Lim, Wheejae Kim, Dongwook Kim, Dongju Yoon, No-Cheol Park
Summary: This paper presents a method to evaluate the level of vibrotactile sensation perceived by drivers due to vehicle accelerator pedal vibration and be able to predict riding comfort. Equivalent comfort contours for foot-transmitted vibrations are derived, and weighted vibrations representing the vibrotactile sensation level perceived by drivers from the vehicle accelerator pedal are produced by applying the weighting filters to measured vibration data.
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Kongshu Deng, Yicheng Ding, Lu Zeng, Zhurong Yin, Hailiang Wu, Dilei Qian
Summary: This study aims to determine the structural parameters of the equivalent vertical stiffness design of a modular deformable wheel by establishing a gas stiffness model, which provides theoretical basis for meeting ride comfort requirements and selecting this type of wheel. The obtained wheel structure parameters and mechanical parameters will provide effective theoretical compliance for the use and promotion of this wheel in complex geological environments.
INTERNATIONAL JOURNAL OF AUTOMOTIVE TECHNOLOGY
(2021)
Article
Engineering, Industrial
Zhen Zhou, Michael J. Griffin
Article
Engineering, Industrial
Khairil Anas Md Rezali, Michael J. Griffin
Article
Engineering, Industrial
Zhen Zhou, Michael J. Griffin
Article
Engineering, Civil
Weidong Gong, Michael J. Griffin
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART F-JOURNAL OF RAIL AND RAPID TRANSIT
(2018)
Article
Public, Environmental & Occupational Health
Ying Ye, Michael J. Griffin
INTERNATIONAL ARCHIVES OF OCCUPATIONAL AND ENVIRONMENTAL HEALTH
(2017)
Article
Public, Environmental & Occupational Health
Ying Ye, Michael J. Griffin
INTERNATIONAL ARCHIVES OF OCCUPATIONAL AND ENVIRONMENTAL HEALTH
(2018)
Article
Biophysics
Chi Liu, Yi Qiu, Michael J. Griffin
JOURNAL OF BIOMECHANICS
(2017)
Article
Engineering, Industrial
Khairil Anas Md Rezali, Michael J. Griffin
Article
Engineering, Industrial
Giulia Patelli, Miyuki Morioka, Michael J. Griffin
Article
Engineering, Industrial
Chi Liu, Michael J. Griffin
INTERNATIONAL JOURNAL OF INDUSTRIAL ERGONOMICS
(2018)
Article
Engineering, Industrial
Giulia Patelli, Michael J. Griffin
APPLIED ERGONOMICS
(2019)
Article
Engineering, Industrial
James J. Arnold, Michael J. Griffin
Article
Engineering, Industrial
Guangtai Zheng, Yi Qiu, Michael J. Griffin
INTERNATIONAL JOURNAL OF INDUSTRIAL ERGONOMICS
(2019)
Article
Engineering, Biomedical
Hatice Mujde Ayik, Michael J. Griffin
JOURNAL OF APPLIED BIOMECHANICS
(2019)
Article
Engineering, Civil
Chi Liu, David Thompson, Michael J. Griffin, Mani Entezami
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART F-JOURNAL OF RAIL AND RAPID TRANSIT
(2020)
Article
Acoustics
Sandip Chajjed, Mohammad Khalil, Dominique Poirel, Chris Pettit, Abhijit Sarkar
Summary: This paper reports the generalization of the Bayesian formulation of the flutter margin method, which improves the predictive performance by incorporating the joint prior of aeroelastic modal parameters. The improved algorithm reduces uncertainties in predicting flutter speed and can cut cost by reducing the number of flight tests.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Pascal Zeise, Bernhard Schweizer
Summary: Air ring bearings are an improved version of classical air bearings, providing better damping behavior and allowing operation above the linear threshold speed of instability. However, there is a risk of dangerous vibrations in certain rotor systems, which can be addressed by considering ring tilting effects.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Zbynek Sika, Jan Krivosej, Tomas Vyhlidal
Summary: This paper presents a novel design of a compact six degrees of freedom active vibration absorber with six identical eigenfrequencies. The objective is to completely suppress the vibration of a machine structure with six motion components. By utilizing a Stewart platform structure equipped with six active legs, a spatial unifrequency absorber with six identical eigenfrequencies is achieved. The design is optimized using a correction feedback and active delayed resonator feedback.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Kai Li, Yufeng Liu, Yuntong Dai, Yong Yu
Summary: This paper presents a novel light-powered self-oscillating liquid crystal elastomer (LCE) bow that can self-oscillate continuously and periodically under steady illumination. The dynamics of the LCE bow are theoretically investigated and numerical calculations predict its motion regimes. The suggested LCE bow offers potential advantages in terms of simple structure, customizable size, flexible regulation, and easy assembly.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Carmelo Rosario Vindigni, Giuseppe Mantegna, Calogero Orlando, Andrea Alaimo
Summary: In this study, a simple adaptive flutter suppression system is designed to increase the operative speed range of a wing-aileron aeroelastic plant. The system achieves almost strictly passivity by using a parallel feed-forward compensator implementation and the controller parameters are optimized using a population decline swarm optimization algorithm. Numerical simulations prove the effectiveness of the proposed simple adaptive flutter suppression architecture in different flight scenarios.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Nicco Ulbricht, Alain Boldini, Peng Zhang, Maurizio Porfiri
Summary: The quantification of fluid-structure interactions in marine structures is crucial for their design and optimization. In this study, an analytical solution for the free vibration of a bidirectional composite in contact with a fluid is proposed. By imposing continuity conditions and boundary conditions, the coupled fluid-structure problem is solved and applied to sandwich structures in naval construction, offering insights into the effects of water on mode shapes and through-the-thickness profiles of displacement and stress.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Shahram Hadian Jazi, Mostafa Hadian, Keivan Torabi
Summary: Non-uniformity and damage are the main focus in studying vibrations of beam elements. An exact closed-form explicit solution for the transverse displacement of a nonuniform multi-cracked beam is introduced using generalized functions and distributional derivative concepts. By introducing non-dimensional parameters, the motion equation and its closed-form solution are obtained based on four fundamental functions. The impact of crack count, location, intensity, and boundary conditions on natural frequency and mode shape is evaluated through numerical study.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Eugenio Tramacere, Marius Pakstys, Renato Galluzzi, Nicola Amati, Andrea Tonoli, Torbjoern A. Lembke
Summary: This paper proposes the experimental stabilization of electrodynamic maglev systems by means of passive components, providing key technological support for the Hyperloop concept of high-speed and sustainable transportation.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Pengfei Deng, Xing Tan, He Li
Summary: In this paper, the authors improve the surface morphology method and study the bit-rock interaction model between the rock and the PDC bit, taking into account the impact of blade shape and cutter arrangement. They establish a dynamic model for a deep drilling system equipped with an arbitrary shape PDC bit and propose a stability prediction method. The results show that the shape of the blades and arrangement of the cutters on the PDC bit significantly affect the nonlinear vibration of the drilling system.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Salvador Rodriguez-Blanco, Javier Gonzalez-Monge, Carlos Martel
Summary: In modern LPT designs, the simultaneous presence of forced response and flutter in different operation regimes is unavoidable. Recent evidence suggests that the traditional linear superposition method may be overly conservative. This study examines the flutter and forced response interaction in a realistic low pressure turbine rotor and confirms that the actual response is much smaller than that predicted by linear superposition.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Kabilan Baskaran, Nur Syafiqah Jamaluddin, Alper Celik, Djamel Rezgui, Mahdi Azarpeyvand
Summary: This study investigates the impact of the number of blades on the aeroacoustic characteristics and aerodynamic performance of propellers used in urban air mobility vehicles. The results show that different blade numbers exhibit distinct noise levels, providing valuable insights for further research on propeller noise and aerodynamic performance.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Yongbo Peng, Peifang Sun
Summary: This study focuses on the reliability-based design optimization (RBDO) of the tuned mass-damper-inerter (TMDI) system under non-stationary excitations. The performance of the optimized TMDI system is evaluated using probability density evolution analysis. The results demonstrate the technical advantages of TMDI, including high vibration mitigation performance, considerable mass reduction, and less stroke demand.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Guanfu Lin, Zhong-Rong Lu, Jike Liu, Li Wang
Summary: Vision-based measurement is an emerging method that enables full-field measurement with non-contact and high spatial resolution capabilities. This paper presents a single-camera method for measuring out-of-plane vibration of plate structures using motion-parametric homography to capture image variation and displacement response.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Bronislaw Czaplewski, Mateusz Bocian, John H. G. Macdonald
Summary: Despite two decades of study, there is currently no model that can quantitatively explain pedestrian-generated lateral forces. This research proposes a foot placement control law based on empirical data to calibrate and generalize the rigid-leg inverted pendulum model (IPM) for predicting lateral structural stability.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Justine Carpentier, Jean-Hugh Thomas, Charles Pezerat
Summary: This paper proposes an improved method for the identification of vibration sources on a car window using the corrected force analysis technique. By redefining inverse methods in polar coordinates, more accurate results can be obtained.
JOURNAL OF SOUND AND VIBRATION
(2024)