Results 31 to 40 of about 1,082 (176)

A Cyclic Constitutive Model Based on Fractional Derivative for Rate-Dependent Ratcheting of EA4T Axle Steel

Fractal and Fractional
Within the framework of elastoplastic theory, this study develops and improves a fractional cyclic constitutive model capable of describing rate-dependent ratcheting behavior by defining the ratcheting parameter as a function of the cumulative plastic ...
Xuehong Ren, Chenzhuo Qu, Jiujian Wang, Wenjie Zhao, Shaopu Yang, Yongqiang Liu   +5 more
doaj   +1 more source

Evolution of Physical Intelligence Across Scales

Advanced Intelligent Discovery, EarlyView.
By following the evolution of physical intelligence across scales, this article shows how intelligence arises from materials, structures, physical interactions, and collectives. It establishes physical intelligence as the evolutionary foundation upon which embodied intelligence is built.
Ke Liu, Tianyun Huang, Aming Li, Pengyu Lv, Tingting Qin, Wenhui Chen, Hui Wei, Huiling Duan   +7 more
wiley   +1 more source

Experiment Study on the Growth of Strain by Thermal Ratchet Mechanism

Bulletin of JSME, 1975
There are many cases that a permanent deformations called plastic flow take place in the materials of severely heated parts of thermal engined and etc. caused by the ratcheting superposition of thermal and mechanical stress. In this paper, the ratcheting is first classified in various types of thermal load, and then, those elongation rates are ...
ISSHIKI, Naotsugu, FUJII, Iwane, UMEZU, Kenji, MORIOKA, Akihiro   +3 more
openaire   +2 more sources

Evaluation of Sensitivity and Calibration of the Chaboche Kinematic Hardening Model Parameters for Numerical Ratcheting Simulation

Applied Sciences, 2019
Ratcheting failure of materials and structures subjected to low cycle fatigue in the presence of significant mean stress is of great interest to researchers.
Navid Moslemi, Mohsen Gol Zardian, Amran Ayob, Norizah Redzuan, Sehun Rhee   +4 more
doaj   +1 more source

Photoreversible Polyurea Actuators With Spatiotemporal Control and Adaptive Mechanics

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A light–thermal responsive polyurea network incorporating reversibly dimerizable anthracene units enables spatiotemporal modulation of cross‐linking density and nearly 400‐fold stiffness tuning. Integrating programmable anisotropy, photopatterning, self‐healing, and photowelding within a single framework, this bioinspired “one network–multifunction ...
Zhiwen Song, Wang Li, Xinru Guo, Rui Pu, Wenxin Wang, Yujun Cheng, Liang Shen, Fei Gao   +7 more
wiley   +1 more source

Absence seizures: Update on signaling mechanisms and networks

Epilepsia Open, EarlyView.
Abstract Absence seizures (AS) are a hallmark of genetic generalized epilepsies (GGE), characterized by brief episodes of impaired consciousness accompanied by electroencephalographic spike‐and‐wave discharges (SWDs). Traditionally attributed to cortico‐thalamo‐cortical (CTC) dysrhythmia, emerging evidence suggests a more intricate pathophysiological ...
Ozlem Akman, Filiz Onat
wiley   +1 more source

Strain ratcheting mechanisms in the backfill of integral bridges

Canadian Geotechnical Journal
Integral bridges use a jointless and bearingless design to minimise long-term maintenance. Interaction between the abutments and backfill due to thermal movements of the deck causes an accumulation of strain and an associated increase in earth pressure over time, with the mechanisms underlying this increase not being well understood.
Douglas G. Morley, Gopal S.P. Madabhushi, Dennis Sakufiwa   +2 more
openaire   +2 more sources

Climate Driven Water Table Changes and Their Influence on Liquefaction Response of Integral Bridges

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Integral abutment bridges (IABs) eliminate bearings and joints but transfer seismic demand directly into the surrounding soil, making their response highly sensitive to groundwater conditions and soil–structure interaction. This study presents a 60 g centrifuge testing programme on single‐span IABs designed to isolate the influence of water ...
Yazan B. Asia, Gopal S. P. Madabhushi
wiley   +1 more source

In-plane anisotropy in deformation micro-mechanism of commercially pure titanium during monotonic tension and cyclic loading

Fracture and Structural Integrity, 2019
In the present investigation in-plane anisotropy in tensile and ratcheting behavior of cold rolled and annealed commercially pure titanium plate has been studied.
Atasi Ghosh
doaj   +3 more sources

A Cyclic Plasticity Model with Martensite Transformation for S30408 and Its Finite Element Implementation

Applied Sciences, 2020
The ability of the constitutive model to simulate the ratcheting behavior of metastable austenitic stainless steel S30408 is significant to ensure the safety of the liquefied natural gas (LNG) semi-trailer tanks in the lightweight process of the inner ...
Yanan Chen, Xiaohui Chen, Bingjun Gao, Xu Chen, Kai Zhang, Chulin Yu   +5 more
doaj   +1 more source