Results 71 to 80 of about 22,087 (289)

Definition of a linear equivalent model for a non-linear system with impacts [PDF]

open access: yes, 2012
Modal characteristics of non-linear system are typically studied through response to harmonic excitation and using various definitions of non-linear modes. However, few results are available for systems under broadband excitation.
BALMES, Etienne   +2 more
core  

Advanced Design for Weakly Coupled Resonators by Automatic Active Optimization

open access: yesAdvanced Materials Technologies, EarlyView.
An Automatic Active Optimization (AAO) strategy integrates machine learning predictors and genetic algorithms in a closed‐loop workflow. By iteratively expanding its dataset with new discoveries, AAO overcomes the limits of conventional methods. This approach finds superior microstructural designs beyond the initial sample space. We demonstrate this on
Wei Yue   +8 more
wiley   +1 more source

Modal Coefficients Identification Using Wavelet Transform [PDF]

open access: yesInternational Journal of Advanced Design and Manufacturing Technology, 2011
Identification of damping parameter is usually more complicated and unreliable comparing to mass or stiffness identification in structural dynamics. There are many factors such as intermolecular friction, Coulomb friction and Viscous damping affecting ...
Hasan Jalali, Fardin Parvizi
doaj  

A study of joint damping in metal plates

open access: yes, 2006
For satellite applications the determination of the correct dynamic behaviour and in particular the structural damping is important to assess the vibration environment for the spacecraft subsystems and ultimately their capability to withstand the launch ...
Walker, S.J.I.   +2 more
core  

Micropillar‐Engineered Hybrid Adhesive Patch for Surface‐Conformable and Directional Adhesion

open access: yesAdvanced Materials Technologies, EarlyView.
This work presents a surface‐conformable hybrid adhesive integrating height‐optimized hexagonal micropillars with open‐rectangular cuts. The micropillars enhance rough‐surface contact and microscale crack arrest, while the cuts guide and reverse interfacial cracks for strong and directional adhesion. The multiscale architecture achieves robust pull‐off
Seongjin Park   +4 more
wiley   +1 more source

An investigation into the design for vibration damping of extended length tool holders [PDF]

open access: yes
This thesis presents a theoretical and experimental investigation into the design of extended length tool holders, with specific emphasis on vibration damping and the attenuation of chatter in boring bars.
Shirvani, Ayoub
core  

Modelling rocking response via equivalent viscous damping [PDF]

open access: yes, 2019
The assessment of the out-of-plane response of masonry structures has been largely investigated in literature assuming that walls respond as rigid or semi-rigid bodies, and relevant equations of motion of single-degree-of-freedom and multi-degree of ...
Penna A.   +3 more
core   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

open access: yesAdvanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu   +8 more
wiley   +1 more source

Structural damping estimation using a simple equation based on the equivalent viscous damping concept

open access: yesProcedia Engineering, 2017
Abstract Earlier research papers by the authors have presented a simple equation, derived using the equivalent viscous damping concept, to characterize the amplitude-dependency of modal damping. While initially intended for damping estimation on account of stick-slip surfaces acting on main structural systems of buildings within the linear range, the
Ronwaldo Emmanuel R. Aquino   +1 more
openaire   +1 more source

Implementation of Direc Displacement Based Design for Pile and Drilled Shaft Bents

open access: yes, 2006
The work in this thesis attempts to implement the Direct Displacement Based Design (DDBD) method to the seismic design of long reinforced concrete pile and drilled shaft bents embedded in soft soils.
Suarez, Vinicio
core  

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