Past, present and future of nonlinear system identification in structural dynamics

G Kerschen, K Worden, AF Vakakis… - Mechanical systems and …, 2006 - Elsevier
This survey paper contains a review of the past and recent developments in system
identification of nonlinear dynamical structures. The objective is to present some of the …

Flexible polyurethane foam modelling and identification of viscoelastic parameters for automotive seating applications

R Deng, P Davies, AK Bajaj - Journal of Sound and Vibration, 2003 - Elsevier
A hereditary model and a fractional derivative model for the dynamic properties of flexible
polyurethane foams used in automotive seat cushions are presented. Non-linear elastic and …

The transmission of vertical vibration through seats: Influence of the characteristics of the human body

MGR Toward, MJ Griffin - Journal of Sound and Vibration, 2011 - Elsevier
The transmission of vibration through a seat depends on the impedance of the seat and the
apparent mass of the seat occupant. This study was designed to determine how factors …

[HTML][HTML] A dynamic poroelastic model for auxetic polyurethane foams involving viscoelasticity and pneumatic dam** effects in the linear regime

Q Zhang, X Yu, F Scarpa, D Barton, Y Zhu… - … Systems and Signal …, 2022 - Elsevier
This work proposes a new dynamic poroelastic model to describe the vibration
transmissibility of auxetic polyurethane (PU) foams. The model includes the pneumatic …

Railways Passengers Comfort Evaluation through Motion Parameters: A Systematic Review

P Silva, D Ribeiro, J Mendes, EAR Seabra… - Machines, 2023 - mdpi.com
Railways are one of the most widely used mass transportation systems. Its superior
transportation capacity, low environmental impact, high safety, and comfort have been …

Directional and sectional ride comfort estimation using an integrated human biomechanical-seat foam model

N Mohajer, H Abdi, S Nahavandi, K Nelson - Journal of Sound and …, 2017 - Elsevier
In the methodology of objective measurement of ride comfort, application of a Human
Biomechanical Model (HBM) is valuable for Whole Body Vibration (WBV) analysis. In this …

Nonlinear multi-body dynamic modeling of seat–occupant system with polyurethane seat and H-point prediction

RK Ippili, P Davies, AK Bajaj, L Hagenmeyer - International Journal of …, 2008 - Elsevier
Hip joint location (H-point) is an important design specification used by car seat
manufacturers. Since most modern car seats are full-foam, the H-point location is primarily …

Experimental and theoretical study on a building structure controlled by multi-dimensional earthquake isolation and mitigation devices

ZD Xu, PP Gai, HY Zhao, XH Huang, LY Lu - Nonlinear Dynamics, 2017 - Springer
Multi-dimensional earthquake isolation and mitigation device (MEIMD) is a newly developed
structural vibration control device. First, the horizontal and vertical property tests are …

Identification of nonlinear and viscoelastic properties of flexible polyurethane foam

R Singh, P Davies, AK Bajaj - Nonlinear Dynamics, 2003 - Springer
Abstract Analysis of the steady-state response of a polyurethane foam and masssystem to
harmonic excitation is presented. The foam's uni-directionaldynamic behavior is modeled by …

Study of a novel nonlinear viscoelastic bio-inspired multi-dimensional vibration isolation device

ZH He, ZD Xu, JY Xue, XJ **g, YR Dong… - International Journal of …, 2022 - World Scientific
This study proposes a novel viscoelastic bio-inspired multi-dimensional vibration isolation
device (VBM-VI). The viscoelastic (VE) damper and the limb-like-structure (LLS) are first …