Results 21 to 30 of about 19,020 (254)

Depth-dependent ratcheting strains of young and adult articular cartilages by experiments and predictions

BioMedical Engineering OnLine, 2019
Background Ratcheting strain is produced due to the repeated accumulation of compressive strain in cartilage and may be a precursor to osteoarthritis.
Li-Lan Gao, Xiang-Long Lin, Dong-Dong Liu, Ling Chen, Chun-Qiu Zhang, Hong Gao   +5 more
doaj   +1 more source

The numerical and experimental analysis of ratcheting behavior for 304 steel sheets under cyclic axial loading

Advances in Mechanical Engineering, 2023
The present study examines the effect of the thickness, cutouts numbers, and different cutouts shapes on the ratcheting behavior of 304 steel sheets under cyclic axial loading.
Ali Shahrjerdi, Ali SafariFard
doaj   +1 more source

The Bree problem with different yield stresses on-load and off-load and application to creep ratcheting [PDF]

, 2014
The ratchet boundaries and ratchet strains are derived for the Bree problem and an elastic perfectly plastic material with different yield stresses on-load and off-load.
Bradford, R.A.W., Chen, Haofeng, Ure, James   +2 more
core   +1 more source

Characterization of the material response in the granular ratcheting [PDF]

, 2005
The existence of a very special ratcheting regime has recently been reported in a granular packing subjected to cyclic loading \cite{alonso04}. In this state, the system accumulates a small permanent deformation after each cycle.
A. Niemunis, C. S. Desai, C. Thornton, D. Kolymbas, F. Alonso-Marroquín, G. L. England, G. Royer-Carfagni, H. J. Herrmann, I. Vardoulakis, J. Burland, J. J. Allen, J. J. Moreau, J. Uzan, L. Brendel, M. Huang, M. Oda, M. P. Allen, P. A. Cundall, R. G. Hicks, R. García-Rojo, S. Werkmeister, S. Zapperi, W. A. Tam, Y. Mroz   +23 more
core   +2 more sources

Ratcheting occurrence conditions of piping under sinusoidal excitations

Mechanical Engineering Journal, 2020
Ratcheting is one of the dominant failure modes under excessive earthquakes and may cause extreme failures of structures (e.g., collapse). We focused on clarifying the ratcheting mechanism of piping under sinusoidal excitations.
Jinqi LYU, Masakazu ICHIMIYA, Ryunosuke SASAKI, Naoto KASAHARA   +3 more
doaj   +1 more source

Ratcheting Behavior of Intervertebral Discs Under Cyclic Compression: Experiment and Prediction

Orthopaedic Surgery, 2019
Objective To evaluate the ratcheting behavior of intervertebral discs (IVD) by experiments and theoretical study. Method The lumbar spines of sheep were obtained at a local slaughterhouse, and the IVD was processed with upper and lower vertebral bodies ...
Chun‐qiu Zhang, Tao Zhang, Lilan Gao, Cheng‐fei Du, Qing Liu, Hai‐ying Liu, Xin Wang   +6 more
doaj   +1 more source

Experimental and Numerical Evaluation of Residual Displacement and Ductility in Ratcheting and Shakedown of an Aluminum Beam

Applied Sciences, 2020
Safety assessment of structures can be obtained employing limit design to overcome uncertainties concerning actual response due to inelastic constitutive behavior and more generally to non-linear structural response and loads’ random variability.
Simone Palladino, Luca Esposito, Paolo Ferla, Elena Totaro, Renato Zona, Vincenzo Minutolo   +5 more
doaj   +1 more source

Research on thermomechanical fatigue life prediction of regenerative cooling thrust chamber

Xibei Gongye Daxue Xuebao, 2022
The ratcheting effect of the liner wall structure in the thrust chamber of liquid rocket engine under cyclic load is studied, and its service life is predicted.
HUANG Junfeng, HE Erming, YI Jinxiang, DU Dahua, WANG Hongjian   +4 more
doaj   +1 more source

Ratchet Cellular Automata [PDF]

Physical Review Letters, 2003
In this work we propose a ratchet effect which provides a general means of performing clocked logic operations on discrete particles, such as single electrons or vortices. The states are propagated through the device by the use of an applied AC drive. We numerically demonstrate that a complete logic architecture is realizable using this ratchet.
Hastings, M. B., Reichhardt, C. J. Olson, Reichhardt, C.   +2 more
openaire   +3 more sources

A new crystal plasticity modeling of uniaxial ratcheting behavior for face-centered cubic 6061 aluminum alloy

Materials Research Express, 2020
The uniaxial ratcheting behavior of face-centered cubic 6061 aluminum alloy is investigated theoretically based on the crystal plasticity theory. In this model, a simplified flow rule is adopted for convenient engineering application, and the classical ...
Yawei Dong, Xu He, Zhiyong Zhang
doaj   +1 more source