Results 71 to 80 of about 140,635 (310)
Resonant Enhancement of Turbulent Energy Dissipation [PDF]
Physical Review Letters, 2010 We periodically modulate a turbulent wind-tunnel flow with an active grid. We find a resonant enhancement of the mean turbulent dissipation rate at a modulation frequency which equals the large-eddy turnover rate. Thus, we find the best frequency to inject energy into a turbulent flow. The resonant response is characterized by the emergence of vortical
Cekli, E.H. +2 more
openaire +3 more sources
Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading
Advanced Engineering Materials, EarlyView.The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley +1 more source
ENERGY DISSIPATION CHARACTERISTICS OF NON-LINEAR NORMAL VIBRATION CONTACT INTERFACE
Jixie qiangdu, 2022 The energy dissipation characteristics of the non-linear normal vibration contact system of the interface have important theoretical and engineering significance for describing the dynamic mechanism of the interface.Based on Hertz contact theory, the ...
ZHANG MingSong +4 more
doaj
Dissipation mechanisms identification of soft hollow particle-dampers in honeycomb structures for micro-vibrations environment [PDF]
, 2009 Particle dampers are enclosures partially filled with metallic or glass small spheres, attached to the vibrating structure. This paper deals with replacing hard classical particles by soft hollow ones to maximize damping and mass ratio. Hence, one aspect
Heurteau, Jean-Pierre +5 more
core
, 2023 In the process of high flow rate fracture and high gas production, the sealing performance of the premium connection decreases due to the dynamic load and vibration of downhole tubing strings, which may cause accidents.
Yang Yu +4 more
core +1 more source
LIV. On the dissipation of energy [PDF]
The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, 1879 (1879). LIV. On the dissipation of energy. The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science: Vol. 7, No. 44, pp. 344-348.
openaire +2 more sources
Karl Popper and the Mechanisms of Hydrogen Embrittlement
Advanced Engineering Materials, EarlyView.Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley +1 more source
Theoretical Analysis Model of a New Post-Tensioned, Unbonded, Prestressed Beam–Column Connection
BuildingsTo investigate the mechanical properties of a new post-tensioned, unbonded, prestressed beam–column connection—including its hysteresis behavior and energy dissipation capacity—a theoretical analysis was conducted.
Hu Qi +3 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.A two‐dimensional multiscale finite element analysis framework was established for the first‐generation MoSiBTiC alloy, and the mechanical and fracture‐related parameters of the constituent phases were calibrated through experiments and simulations. The framework provides a basis for analyzing crack propagation behavior in its complex microstructure ...
Junfeng Du +4 more
wiley +1 more source
Energy Dissipation in Stepped Spillways with Different Horizontal Face Angles
, 2019 Energy dissipation is one of the most important factors in choosing stepped spillways. However, very few studies have investigated energy dissipation with different horizontal face angles.
Chunhang Xie +6 more
core +1 more source