Results 31 to 40 of about 526 (174)

Shakedown analysis of red mudstone fill material with different water contents

Journal of Rock Mechanics and Geotechnical Engineering
Understanding the shakedown behavior of fill material is paramount to estimate the deformation stability of railway subgrade. Especially for red mudstone fill material (RMF), the noticeable overestimation of bearing capacity would be encountered if the ...
Kang Chen, Rui Zhang, Xianfeng Liu, Huan Wang, Rui Li   +4 more
doaj   +1 more source

Fatigue Crack Modeling of Railheads Using a Nonlinear Cohesive Zone Model

Fatigue &Fracture of Engineering Materials &Structures, EarlyView.
ABSTRACT Subsurface fatigue crack growth within railheads can be deleterious leading to catastrophic failures in rails. This study aims to model the fatigue crack growth originating at the subsurface level within railheads. Towards that end, a finite element modeling approach is utilized wherein complex crack growth is explicitly modeled using a ...
Santosh Reddy Kommidi, Hesam Mortazavi, Yong‐Rak Kim, David H. Allen   +3 more
wiley   +1 more source

Elastic shakedown analysis of axisymmetric nozzles

, 2003
An investigation of the shakedown behavior of axisymmetric nozzles under internal pressure is presented. The analysis is based on elastic-plastic finite element analysis and Melan's lower bound shakedown theorem.
Muscat, Martin, Mackenzie, D.
core   +1 more source

Study on a unified criterion for preventing plastic strain accumulation due to long distance travel of temperature distribution

Mechanical Engineering Journal, 2017
The prevention of excessive deformation by thermal ratcheting is important in the design of high-temperature components of fast breeder reactors (FBR). In an experimental study that simulated a fast breeder reactor vessel near the coolant surface, it was
Satoshi OKAJIMA, Takashi WAKAI, Nobuchika KAWASAKI   +2 more
doaj   +1 more source

Tracking Active Site Formation during Oxidative Activation of Copper-Exchanged Zeolites for Methane-to-Methanol Conversion. [PDF]

Adv Sci (Weinh)
The oxidative generation of Cu(II) active sites in Cu‐exchanged zeolites for the CH4‐to‐CH3OH conversion has been studied. Complementary in situ/operando spectroscopic techniques highlight that the formation rate and the stability of different Cu(II) species are governed by their structure and the zeolite topology.
Brenig A, Fischer JWA, Klose D, Jeschke G, van Bokhoven JA, Sushkevich VL.   +5 more
europepmc   +2 more sources

Self‐Expanding Cardiovascular Stents: Potentials and Challenges of Shape Memory Biomaterials

Journal of Biomedical Materials Research Part B: Applied Biomaterials, Volume 114, Issue 6, June 2026.
ABSTRACT Cardiovascular diseases affect a large portion of the global population and remain leading causes of morbidity and mortality. Endovascular stenting, a minimally invasive procedure, enables the insertion and deployment of stents to restore arterial patency without open surgery.
Luci R. Duncan, Josiah S. Owusu‐Danquah   +1 more
wiley   +1 more source

Deformation behavior of K0-consolidated soft clay under traffic load-induced stress paths

Yantu gongcheng xuebao, 2017
Under traffic loads, the magnitudes and directions of the principal stresses applied in the soil elements of soft subgrade change simultaneously. Namely, as the shear stress changes in amplitudes, the principal stress axes continuously rotate.
WU Ting-yu 1, GUO Lin 2,3, CAI Yuan-qiang 1, WANG Jun 2, 3
doaj   +1 more source

Pose‐Independent Soft Haptic Ring for Joint‐Centered Directional Guidance via Multichannel Shape Memory Alloy Actuators

Small Structures, Volume 7, Issue 5, May 2026.
The Pose‐Independent Haptic Ring (PIHR) delivers four‐directional, joint‐referenced haptic cues using a compact multichannel serpentine SMA array embedded in a soft elastomer. By mapping circumferential normal indentation to a metacarpophalangeal (MCP)‐centered spherical coordinate system, the PIHR preserves consistent spatial meaning under arbitrary ...
Hyunsoo Kim, Jaewoo Roh, Hunpyo Ju, Wonhee Ji, Manmatha Mahato, Hyunjoon Yoo, Il‐Kwon Oh   +6 more
wiley   +1 more source

Electrocatalytic Reduction of CO2 to Ethylene: Catalyst Design and Synchrotron‐Based Characterizations

Advanced Functional Materials, Volume 36, Issue 35, 30 April 2026.
This review evaluates strategies for electrochemical CO2 reduction to ethylene, focusing on copper‐based catalyst design and microenvironment modulation to achieve industrial‐grade performance. By leveraging operando synchrotron‐based characterizations, we provide a multiscale understanding of dynamic structural transformations and key reaction ...
Meng Zhang, Zuolong Chen, Yimin A. Wu
wiley   +1 more source

Simulation‐Based Assessment of Second‐Order Residual Stress Fields on the Fatigue Performance of Silicon‐Strengthened Ferritic Ductile Irons

Advanced Engineering Materials, Volume 28, Issue 6, 18 March 2026.
This work presents a simulation‐based framework based on representative volume elements (RVEs) that explicitly incorporates process‐induced second‐order residual stresses into the fatigue strength assessment of ductile cast iron (DCI). For the first time, this approach enables a direct evaluation of the influence of second‐order residual stress fields ...
Lutz Horbach, Xuemei Lyu, Jiali Zhang, Felix Weber, Christoph Broeckmann   +4 more
wiley   +1 more source