Results 11 to 20 of about 36,129 (257)

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   +1 more source

Reaching the Yield Point of a Glass During X-Ray Irradiation

Physical Review X, 2023
A solid loaded beyond the yield stress loses its elastic properties and becomes plastic. From a microscopic point of view, this limit corresponds to the condition where plastic regions become so densely packed that they give rise to system-spanning ...
Alessandro Martinelli, Federico Caporaletti, Francesco Dallari, Michael Sprung, Fabian Westermeier, Giacomo Baldi, Giulio Monaco   +6 more
doaj   +1 more source

High resolution incremental stress testing of crushable granular materials [PDF]

E3S Web of Conferences, 2019
The incremental behaviour of crushable sands is investigated by means of a Discrete Element Method (DEM) based analogue. The DEM sample is subjected to a comprehensive set of small stress perturbations in the triaxial plane in order to identify the basic
Ciantia Matteo, Arroyo Marcos, Gens Antonio   +2 more
doaj   +1 more source

Critical Steady-State Response of Single-Degree-of-Freedom Bilinear Hysteretic System under Multi Impulse as Substitute of Long-Duration Ground Motion

Frontiers in Built Environment, 2017
A set of multiple impulses is introduced as a substitute of many-cycle harmonic waves which represent the long-duration earthquake ground motion. A closed-form expression is derived of the elastic–plastic response of a single-degree-of-freedom structure ...
Kotaro Kojima, Izuru Takewaki
doaj   +1 more source

Dynamic Response Analysis of Elastic-plastic Structures with Component Mode Synthesis

MATEC Web of Conferences, 2017
This paper evaluates the validity of component mode synthesis (CMS) technique for dynamic response of elastic-plastic structures. A method incorporating elastic-plastic material behaviour and the fixed interface mode synthesis technology is presented. To
Qian Peng-bo
doaj   +1 more source

Closed-form critical earthquake response of elastic-plastic structures on compliant ground under near-fault ground motions

Frontiers in Built Environment, 2016
The double impulse is introduced as a substitute of the fling-step near-fault ground motion. A closed-form solution of the elastic-plastic response of a structure on compliant (flexible) ground by the ‘critical double impulse’ is derived for the first ...
Kotaro eKojima, Izuru eTakewaki
doaj   +1 more source

Comprehensive Review of Optimal and Smart Design of Nonlinear Building Structures With and Without Passive Dampers Subjected to Earthquake Loading

Frontiers in Built Environment, 2021
The optimal and smart design of nonlinear building structures with and without passive dampers subjected to earthquake loading is of great concern in the structural design of building structures.
Izuru Takewaki, Hiroki Akehashi
doaj   +1 more source

Elastic-Plastic Response Charts for Nuclear Overpressures [PDF]

, 1984
Abstract : The single-degree-of-freedom equation of motion for an elastic- plastic system with forcing functions that are representative of nuclear weapon simulations is nondimensionalized and solved. Numerical solutions are calculated by the Newmark Beta method, and response charts incorporating nondimensionalized structural and loading parameters for
S. A. Kiger, L. K. Guice
openaire   +1 more source

Critical Earthquake Response of 2DOF Elastic-Perfectly Plastic Model Under Multiple Impulse as Substitute for Long-Duration Earthquake Ground Motions

Frontiers in Built Environment, 2019
An equi-spaced consecutive impulse input is treated as a simplified representative for a long-duration earthquake ground motion. The key property of such input can be captured approximately by using harmonic waves.
Yoshito Saotome, Kotaro Kojima, Izuru Takewaki   +2 more
doaj   +1 more source

Bending deformation driven by molecular rotation

Physical Review Research, 2023
In recent years, certain molecular crystals have been reported to possess surprising flexibility by undergoing significant elastic or plastic deformation in response to mechanical loads. However, despite this experimental evidence, there currently exists
Pedro A. Santos-Florez, Shinnosuke Hattori, Qiang Zhu   +2 more
doaj   +1 more source