Results 41 to 50 of about 4,853 (302)

Influence of Geometric Design on Mechanical Performance of Auxetic Metastructure

open access: yesAdvanced Engineering Materials, EarlyView.
Strategic geometric reinforcement transforms auxetic performance. This study evaluates 3D‐printed arrowhead metastructures, revealing that a modified design with local ring reinforcement suppresses premature failure to achieve superior energy absorption and structural efficiency.
Muhammad Gulzari   +3 more
wiley   +1 more source

Optimal layout of unconstrained damping material on a thin panel by using topology optimization

open access: yesNihon Kikai Gakkai ronbunshu, 2014
Damping material is usually applied on the steel panel of a vehicle to reduce vibration level. On the other hand, the weight reduction is also required to improve fuel consumption.
Takashi YAMAMOTO   +3 more
doaj   +1 more source

Influence of Internal Rubber Damper on Cable External Viscous Damper Effectiveness

open access: yesEng, 2022
In practice, the internal rubber dampers are widely installed inside the cable guide pipe between the external viscous damper and the cable anchorage. In order to study the effect of the internal damper on the performance of the external viscous damper ...
Changzhao Li   +5 more
doaj   +1 more source

Experimental and Numerical Modal Analysis of Composite Sandwich Structures Using Surfboards as Model Systems

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents an experimental and numerical modal investigation of composite sandwich structures using surfboards as model systems. By comparing different core materials and reinforcement strategies, the study demonstrates how local stiffeners influence vibrational response and introduce characteristic modal features, highlighting modal ...
Brett Connellan   +4 more
wiley   +1 more source

Vibration Reduction Analysis of Bearing Seat Damping Structure of Helicopter Main Reducer Casing

open access: yesJixie chuandong, 2021
Aiming at the vibration and noise problem of a helicopter main reduction casing,the dynamics simulation analysis of the main reduction transmission system model is performed to solve the dynamic meshing impact force generated by the spiral bevel gear ...
Hao Gao   +3 more
doaj  

Triple Junctions as Dislocation‐Like Defects: The Role of Grain Boundary Crystallography Revealed by Experiment and Atomistic Simulation

open access: yesAdvanced Engineering Materials, EarlyView.
Grain boundary triple junctions are an essential ingredient of the microstructure of polycrystalline materials. In this study, a triple junction is observed using atomic‐resolution scanning transmission electron microscopy and characterized. Computer simulations reveal that the junction has a dislocation character that is determined by the joining ...
Tobias Brink   +4 more
wiley   +1 more source

Instantaneous Modal Parameter Identification of Linear Time-Varying Systems Based on Chirplet Adaptive Decomposition

open access: yesShock and Vibration, 2019
Instantaneous modal parameter identification of time-varying dynamic systems is a useful but challenging task, especially in the identification of damping ratio.
Jie Zhang, Zhiyu Shi
doaj   +1 more source

Estimation of frictional damping of bolted plate structures by dynamic contact analysis

open access: yesNihon Kikai Gakkai ronbunshu, 2021
In mechanical structures where the components are joined by bolts, the vibration damping depends mainly on energy dissipation due to friction at the contact surfaces.
Sotaro TAJIRI   +2 more
doaj   +1 more source

Biomimetic Nanovaccine Integrating Dendritic Cell Exosomes with Tumor Cell Membranes for Sustained Prophylaxis Against Glioblastoma

open access: yesAdvanced Functional Materials, EarlyView.
We have developed DEX/GM, an all‐natural, personalizable hybrid vaccine designed by coating dendritic cell‐derived exosomes (DEX) onto tumor cell membranes (GM) for sustained prophylaxis against glioblastoma (GBM). ABSTRACT Glioblastoma (GBM), one of the most aggressive and lethal brain tumors, remains incurable with a poor clinical prognosis.
Shanshan Li   +6 more
wiley   +1 more source

Refined Study on Free Vibration of a Cable with an Inertial Mass Damper

open access: yesApplied Sciences, 2019
To accurately predict the optimum supplemental modal damping ratio of the cable and the corresponding size of the inertial mass damper (IMD), combined effects of the cable sag, the cable flexural rigidity, and the boundary conditions on the control ...
Zhihao Wang   +4 more
doaj   +1 more source

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