Results 1 to 10 of about 423 (159)
FM-DBEM Simulation of 3D Microvoid and Microcrack Graphite Models [PDF]
Science and Technology of Nuclear Installations, 2017 The graphite is porous medium, and the geometry and size distribution of its structural deficiencies such as microcracks and microvoids at different oxidation degrees have a great influence on the overall performance.
Houdi Lu +5 more
doaj +3 more sources
Residual strength evaluation by DBEM for a cracked lap joint [PDF]
Fracture and Structural Integrity, 2015 The present work summarizes a numerical procedure aimed at the evaluation of the residual strength of a cracked lap joint, based on the competing failure mechanisms regulated by the R-curve analysis and plastic collapse.
R. Citarella
doaj +6 more sources
DBEM solutions to modified Helmholtz problems for FGMs of space–time-dependent properties
Results in PhysicsA combined Laplace transform (LT) and domain-boundary element method (DBEM) are utilized to obtain numerical solutions for a spatio-temporal coefficient modified Helmholtz-type equation with arbitrary initial conditions and source terms, addressing ...
Mohammad Ivan Azis
doaj +2 more sources
Drag-Based Model (DBM) Tools for Forecast of Coronal Mass Ejection Arrival Time and Speed
Frontiers in Astronomy and Space Sciences, 2021 Forecasting the arrival time of coronal mass ejections (CMEs) and their associated shocks is one of the key aspects of space weather research. One of the commonly used models is the analytical drag-based model (DBM) for heliospheric propagation of CMEs ...
Mateja Dumbović +7 more
doaj +1 more source
Acoustic scattering characteristics of underwater multicell cavity corner reflectors [PDF]
Zhihui kongzhi yu fangzhenUnderwater multicell single-layer thin metal plate corner reflectors can’t form a relatively stable TS in a large space because of its strong frequency characteristics.
WANG Jieya, LUO Yi, CHU Zichao, WANG Xiaowei
doaj +1 more source
Applied SciencesThis study seeks to optimize the shape of a wave absorber with an inclined porous plate using an artificial neural network (ANN) model to improve the operating efficiency and experimental accuracy of a square wave basin.
Senthil Kumar Natarajan +2 more
doaj +1 more source
Multi-axial fatigue numerical crack propagation in cruciform specimens
Fracture and Structural Integrity, 2019 Two cracks, initiated from the opposite tips of a central notch inclined by 45°, were considered in cruciform specimens made of Ti6246. A static load was applied to a cruciform arm while a cyclic load was applied along the other arm.
Venanzio Giannella, Michele Perrella
doaj
Bayesian-Informed Fatigue Life Prediction for Shallow Shell Structures
Fatigue of Aircraft StructuresThis study introduces a Bayesian-informed framework for fatigue life prediction in shallow shell structures. The methodology focuses on inferring the Equivalent Initial Flaw Size Distribution (EIFSD), a critical parameter for structural durability ...
Zhuang Mengke +3 more
doaj +1 more source
Vibro-Acoustic Coupling Characteristics Underwater of Disc-Shaped Double-Layer Shell with Stiffeners
Journal of Marine Science and EngineeringA disc-shaped double-layer shell structure reinforced by stiffeners is introduced for underwater gliders. Based on the finite element method integrated with automatic matching layer (FEM/AML) technology and the direct boundary element method (DBEM), the ...
Yue Zhang, Zhaocheng Sun, Tongshun Yu
doaj +1 more source
FEM amd BEM computing costs for acoustical problems
Archives of Acoustics, 2014 FEM and BEM computing costs are compared for acoustical problems. The cost analysis was carried out for bounded areas of simple shapes for objects with acoustical losses (e.g. with sound absorbing materials).
R. BOLEJKO, A. DOBRUCKI
doaj