Results 1 to 10 of about 27,948 (115)

Bounding of earthquake response via critical double impulse for efficient optimal design of viscous dampers for elastic‐plastic moment frames

Japan Architectural Review, 2022
An input velocity adjustment method of the critical double impulse (DI) is presented for efficient design of viscous dampers for elastic‐plastic moment frames.
Hiroki Akehashi, Izuru Takewaki
doaj   +2 more sources

Robust Optimal Damper Placement of Nonlinear Oil Dampers With Uncertainty Using Critical Double Impulse

Frontiers in Built Environment, 2021
A new robust method for optimal damper placement is presented for building structures under the critical double impulse. Oil dampers are treated here as representative supplemental dampers to control the seismic response of high-rise buildings.
Kohei Fujita, Ryota Wataya, Izuru Takewaki   +2 more
doaj   +3 more sources

Simultaneous Optimization of Elastic-Plastic Building Structures and Viscous Dampers Under Critical Double Impulse

Frontiers in Built Environment, 2020
A new method for simultaneous optimal design of main building structures and viscous dampers is proposed for elastic-plastic multi-degree-of-freedom (MDOF) building structures subjected to the critical double impulse which is regarded as a representative
Hiroki Akehashi, Izuru Takewaki
doaj   +3 more sources

The Sequence (S) index as a marker of diminished step-to-step transition efficiency in older adults [PDF]

Frontiers in Human Neuroscience
IntroductionAge-related declines in walking efficiency are often attributed to musculoskeletal and neuromuscular changes, yet the mechanisms underlying these inefficiencies remain poorly understood.
Elham Alijanpour, Ashwini Kulkarni, Peter G. Adamczyk, Daniel M. Russell   +3 more
doaj   +2 more sources

Critical earthquake response of a SDOF elastic‐perfectly plastic model with viscous damping under double impulse as a substitute for near‐fault ground motion

Japan Architectural Review, 2018
The double‐impulse input is introduced as a substitute for the fling‐step near‐fault ground motion, and a closed‐form solution for the approximate elastic‐plastic response of a structure with viscous damping under the “critical double impulse” is derived.
Kotaro Kojima, Yoshito Saotome, Izuru Takewaki   +2 more
doaj   +2 more sources

Optimal Seismic Design of Stiffness and Gap of Hysteretic-Viscous Hybrid Damper System in Nonlinear Building Frames for Simultaneous Reduction of Interstory Drift and Acceleration

Frontiers in Built Environment, 2021
The viscous-hysteretic hybrid (HVH) damper system recently introduced by one of the authors has a clear property that, when the hysteretic dampers with gap mechanism become active (stiffness element starts working), the acceleration of building frames ...
Soichiro Ishida, Izuru Takewaki
doaj   +1 more source

Research on the Inducing Mechanism of Customers’ Impulsive Buying in “Double 11” Shopping Carnival [PDF]

SHS Web of Conferences, 2022
In recent years, impulse buying is increasingly common in China. Online impulse buying (OIB) has drawn increasing scholarly attention across disciplines.
Zuo Weiwei, Lian Zhihua
doaj   +1 more source

Critical Response of High-Rise Buildings With Deformation-Concentration Seismic Control System Under Double and Multi Impulses Representing Pulse-Type and Long-Duration Ground Motions

Frontiers in Built Environment, 2021
The critical responses are investigated for a high-rise building with a deformation-concentration seismic control system under double and multi impulses representing pulse-type and long-duration ground motions, respectively.
Akira Kawai, Tatsuhiko Maeda, Tatsuhiko Maeda, Izuru Takewaki   +3 more
doaj   +1 more source

A Simple Critical Response Evaluation Method for Base-Isolation Building-Connection Hybrid System Under Double Impulse as Representative of Near-Fault Ground Motion

Frontiers in Built Environment, 2021
We revisit a unique building system including a base-isolation, building-connection hybrid control system. The base-isolation system withstands pulse-type earthquake ground motions effectively and the building-connection system resists long-duration ...
Tomoya Nakamura, Kohei Fujita, Izuru Takewaki   +2 more
doaj   +1 more source

Smart Seismic Control System for High-Rise Buildings Using Large-Stroke Viscous Dampers Through Connection to Strong-Back Core Frame

Frontiers in Built Environment, 2020
An innovative structural control system is proposed for high-rise buildings. A damping layer is provided between a stiff upper core frame suspended from the top of the main building and a stiff lower core frame connected to the building foundation.
Akira Kawai, Tatsuhiko Maeda, Tatsuhiko Maeda, Izuru Takewaki   +3 more
doaj   +1 more source