Results 11 to 20 of about 1,359 (225)

On the shakedown analysis of welded pipes [PDF]

International Journal of Pressure Vessels and Piping, 2011
This paper presents the shakedown analysis of welded pipes subjected to a constant internal pressure and a varying thermal load. The Linear Matching Method (LMM) is applied to investigate the upper and lower bound shakedown limits of the pipes. Individual effects of i) geometry of weld metal, ii) ratio of inner radius to wall thickness and iii) all ...
Li, Tianbai, Chen, Haofeng, Chen, Weihang, Ure, James   +3 more
openaire   +4 more sources

Shakedown Analysis of a Composite Cylinder With a Cross-Hole [PDF]

Journal of Pressure Vessel Technology, 2011
In this study, both the lower and upper bound shakedown limits of a closed-end composite cylinder with or without a cross-hole subject to constant internal pressure and a cyclic thermal gradient are calculated by the linear matching method. Convergence for the upper and lower bound shakedown limits of the composite cylinders is sought and shakedown ...
Chen, Haofeng, Chen, Weihang, Li, Tianbai, Ure, James Michael   +3 more
openaire   +4 more sources

Shakedown Analysis of Layered Continuum [PDF]

Research, Development and Practice in Structural Engineering and Construction, 2012
Failure of structures associated with repeated moving surface loads are typically caused by gradual deterioration rather than sudden collapse. This type of failure behavior is mostly due to the accumulation of plastic strains under repeated loadings. They are different from the solution of most stability problems under simple loading programs.
Shiau, Jim, Jim Shiau
openaire   +3 more sources

Plane strain shakedown analysis [PDF]

, 2009
The finite element method is coupled with linear programming to determine shakedown load factors for elastic perfectly plastic embankment subjected to repeated loading using the static shakedown theorem.
ABOUSTAIT, Baher
openaire   +2 more sources

Atomic Precision CoCu Heterodimers with Pseudo-D_3h Symmetry Enable Tandem Nitrate Reduction. [PDF]

Adv Sci (Weinh)
The Co─Cu heterodimer anchored on nitrogen‐doped graphene oxide substrate facilitates electrochemical nitrate reduction in alkaline medium. Co site promotes water dissociation to supply a proton, while Cu sites enhance nitrate adsorption and activation.
Rajan APS, Theerthagiri J, Junmon P, Limphirat W, Yodsin N, Choi MY.   +5 more
europepmc   +2 more sources

Atomic Level Fabrication of Oxychloride Interface for High-Rate and High-Voltage Lithium-Ion Batteries. [PDF]

Angew Chem Int Ed Engl
Synthesis of a lithium‐ion conductive aluminum‐based oxychloride (LAOC) thin film is realized by a facile atomic‐level chemical fabrication method. LAOC coating enables lithium cobalt oxide (LCO) cathode superior cycling performance at high rates and elevated voltages, owing to the fast interfacial ionic transport and excellent interfacial stability ...
Sun Y, Ma J, Yao X, Ren H, Zhang W, Feng L, Hu H, Lin X, Gao Y, Guan Y, Wang C, Sun X.   +11 more
europepmc   +3 more sources

Pyrolysis-Free Formed Cooperative Coupling Pt-Co Dual-Functional Sites for Saline Electrolysis with High Adaptability. [PDF]

Adv Sci (Weinh)
Through a mild pyrolysis‐free route, cooperative coupling of single cobalt atoms (CoSA) and fully exposed platinum nanoclusters (PtNC) is assembled. As expected, the as‐prepared catalysts PtNC/CPF‐Co exhibit dual‐functional performance and high adaptability, demonstrating low overpotentials of 44 mV for HER and 340 mV for OER at 10 mA cm−2 in saline ...
Yan J, Li WY, Wang ZD, Qin JH, Peng P, Zang SQ.   +5 more
europepmc   +2 more sources

O₂-Accessible Fe-N₄ Active Site Density Boosts Efficient Oxygen Reduction to Fuel-Cell Level. [PDF]

Adv Mater
This study investigates the role of hierarchical nanostructure design in optimizing oxygen mass transport for the oxygen reduction. Using atomically dispersed Fe–N–C catalysts with solid, yolk‐shell, and hollow structures, it demonstrates that the yolk‐shell architecture provides superior O2 accessibility to active Fe–N4 sites.
Zhang T, Liang C, Sun S, Xi S, Zhuang Z, Yuan J, Guo ZX, Liu J.   +7 more
europepmc   +2 more sources

Verification of the linear matching method for limit and shakedown analysis by comparison with experiments [PDF]

, 2013
The Linear Matching Method (LMM), a direct numerical method for determining shakedown and ratchet limits of components, has seen significant development in recent years. Previous verifications of these developments against cyclic nonlinear finite element
Tipping, David, James Ure, Haofeng Chen, Chen, Haofeng, Ure, James, David Tipping   +5 more
core   +1 more source

^*OH Adsorption-Mediated Electrochemical Oxidation of 5-Hydroxymethylfurfural to Selective 2,5-Furandicarboxylic Acid at pH 12. [PDF]

Adv Sci (Weinh)
Under the weakly alkaline condition, at pH 12, the *OH adsorption–mediated mechanism of direct aldehyde oxidation is demonstrated to complete HMF oxidation to FDCA, obtaining >95% selectivity and yield. In OH−‐deficient media, high FDCA selectivity is achieved on the CuO/NiOOH interface, a synergistic active site, where Cu enhances *OH utilization, and
Lee E, Hwang J, Yoo S, Choi J, An HJ, Han SH, Kim T, Han JW, Hwang YJ.   +8 more
europepmc   +2 more sources