Results 11 to 20 of about 423 (159)

DBEM crack propagation for nonlinear fracture problems [PDF]

Fracture and Structural Integrity, 2015
A three-dimensional crack propagation simulation is performed by the Dual Boundary Element Method (DBEM). The Stress Intensity Factors (SIFs) along the front of a semi elliptical crack, initiated from the external surface of a hollow axle, are calculated
R. Citarella, V. Giannella, M. Lepore
doaj   +10 more sources

Multiple crack propagation by DBEM in a riveted butt-joint: a simplified bidimensional approach [PDF]

Fracture and Structural Integrity, 2016
A Multi-Site Damage (MSD) crack growth simulation is presented, carried out by means of Dual Boundary Element Method (DBEM), in a two-dimensional analysis of a cracked butt-joint made of aluminium 2024 T3.
R. Citarella
doaj   +7 more sources

Coupled FEM-DBEM method to assess crack growth in magnet system of Wendelstein 7-X [PDF]

Fracture and Structural Integrity, 2013
The fivefold symmetric modular stellarator Wendelstein 7-X (W7-X) is currently under construction in Greifswald, Germany. The superconducting coils of the magnet system are bolted onto a central support ring and interconnected with five so-called lateral
R. Citarella, M. Lepore, Joris Fellinger, Victor Bykov, Felix Schauer   +4 more
doaj   +5 more sources

Enhanced FEM-DBEM approach for fatigue crack-growth simulation [PDF]

, 2018
2016 ...
Giannella, Venanzio
openaire   +4 more sources

Multiple crack propagation by DBEM in a riveted lap-joint

AIMS Materials Science, 2016
The fatigue behavior of a riveted lap joint is analyzed with the Dual Boundary Element Method (DBEM). A Multiple Site Damage (MSD) scenario is obtained from the simultaneous initiation, from the most loaded holes, and propagation of different cracks.
CITARELLA, Roberto Guglielmo, LEPORE, MARCELLO ANTONIO, PERRELLA, MICHELE, CALI', Calogero   +3 more
openaire   +5 more sources

Fatigue Crack Growth by FEM-DBEM Approach in a Steam Turbine Blade [PDF]

Industrial Engineering and Management, 2015
This study is concerned with the integrity assessment of cracked steam turbine rotor components, made of steel X20Cr13, that operate under cyclic loading. Damage accumulation and growth occurred on the leading edge of turbine blade starting from part-through surface flaws.
CITARELLA, Roberto Guglielmo, LEPORE, MARCELLO ANTONIO, Shlyannikov, V, Yarullin, R.   +3 more
openaire   +2 more sources

DBEM and FEM Analysis of an Extrusion Press Fatigue Failure

, 2010
1 Introduction This paper illustrates an application of the Dual Boundary Element Method (DBEM) [1, 2], as implemented in a commercial code [3], to the simulation of a fatigue crack propagation phenomenon affecting the main cylinder of an extrusion press for aluminum sections (Figs. 1, 2, 3 and 4).
CITARELLA, Roberto Guglielmo, CITARELLA, Roberto Guglielmo, CRICRI', Gabriele, CRICRI', Gabriele, LEPORE, MARCELLO ANTONIO, LEPORE, MARCELLO ANTONIO, PERRELLA, MICHELE, PERRELLA, MICHELE   +7 more
core   +5 more sources

Analysis of Solids with Numerous Microcracks Using the Fast Multipole DBEM

Computers, Materials & Continua, 2006
The fast multipole method (FMM) is applied to the dual boundary element method (DBEM) for the analysis of finite solids with large numbers of microcracks. The application of FMM significantly enhances the run-time and memory storage efficiency. Combining multipole expansions with local expansions, computational complexity and memory requirement are ...
P. B. Wang, Z. H. Yao, T. Lei
openaire   +3 more sources

Multiple Models of European Marine Fish Stocks: Regional Winners and Losers in a Future Climate. [PDF]

Glob Chang Biol
Using state‐of‐the art models we projected changes for 17 key commercial fish species in the Northeast Atlantic under two climate scenario. Carrying the analysis at the species level and regional scale rather than the usual total biomass approach, we identify “winners and losers” for fish and regional fisheries, highlighting the need for novel approach
Sailley SF, Catalan IA, Batsleer J, Bossier S, Damalas D, Hansen C, Huret M, Engelhard G, Hammon K, Kay S, Maynou F, Nielsen JR, Ospina-Álvarez A, Pinnegar J, Poos JJ, Sgardeli V, Peck MA.   +16 more
europepmc   +2 more sources

Top-Down and Bottom-Up Processes Jointly Explain Mesopredator Movement and Foraging Ecology. [PDF]

Ecol Lett
This study integrates top‐down (polar bear habitat selection) and bottom‐up (fish distribution) processes to test how mesopredators (ringed seals) balance risk–reward tradeoffs in habitat selection. Ringed seals reduced their space use and foraging time in response to predation risk, yet accepted higher risk when prey diversity was elevated ...
Florko KRN, Ross TR, Ferguson SH, Northrup JM, Obbard ME, Thiemann GW, Yurkowski DJ, Auger-Méthé M.   +7 more
europepmc   +2 more sources