Electrical machines commonly consist of moving and stationary parts. The field simulation of such devices can be very demanding if the underlying numerical scheme is solely based on a domain discretization, such as in case of the Finite Element Method (FEM). Here, a coupling scheme based on FEM together with Boundary Element Methods (BEM) is presented that neither hinges on re-meshing technique...

time-of-flight diffraction method (tofd) is an amplitude-independent sizing method which is based on the measurement of time-of-flight of defect tip diffracted waves. although tofd can measure through-wall length of defect accurately, this method is not capable of measuring horizontal defect size. in this paper, a new tofd method for evaluating horizontal planar defects is presented. the finite...

Article history: Received: 14.7.2015. Received in revised form: 17.10.2015. Accepted: 19.10.2015. The fatigue performance of steel truss integral joint is analyzed based on multi-scale FEM. Numerical results are verified with experimental ones. The fatigue performance of steel truss integral joint is analyzed using a sea-crossing suspension bridge as its background. The 1:2 scale model fatigue ...

BACKGROUND Patency of failed axillofemoral (ax-fem) grafts following thrombectomy is so poor, aortofemoral grafts are recommended as treatment for ax-fem graft thrombosis. In patients who are not candidates for aortic grafting, repeat ax-fem grafting is an alternative to thrombectomy. This report compares our experience treating ax-fem graft thrombosis with replacement or revision vs thrombecto...

deep drawing of cylindrical shapes with high limiting drawing ratio (ldr) values is relatively difficult. annealing is a further operation, which in turn adds costs and consumes significantly time to the forming process. in the present work, cylindrical cups from brass sheet were made with only limited anneal during few steps, but having ldr of 9 that is about 2 times higher than previous works...

Flexible pavement structure design is a complex task because of the variability input parameters and failure mechanisms. Therefore, aim this study to develop implement simplified Mechanistic-Empirical (M-E) method based on 1993 American Association State Highway Transportation Officials (AASHTO), National Cooperative Research Program (NCHRP) 9-22, NCHRP 1-37A 1-40D projects. This methodology im...

Title of Dissertation CHARACTERIZATION OF THE ROLE OF THE FEM GENES IN THE SEX DETERMINATION PATHWAY OF CAENORHABDITIS BRIGGSAE Robin Cook Hill, Doctor of Philosophy, 2008 Directed by: Professor Eric Haag Department of Biology In the genus Caenorhabditis, self-fertile hermaphrodites in C.elegans and C.briggsae evolved from females by developing the ability to generate a limited number of self s...

BACKGROUND The finite element method (FEM) is a powerful mathematical tool to simulate and visualize the mechanical deformation of tissues and organs during medical examinations or interventions. It is yet a challenge to build up an FEM mesh directly from a volumetric image partially because the regions (or structures) of interest (ROIs) may be irregular and fuzzy. METHODS A software package,...

the quasi-static problem is discussed. The equations of incremental theory plasticity are used to describe fast deformation. numerical simulation method implemented based on use Arbitrary Lagrange-Euler (ALE) approach, in which sequence boundary value problems current configuration solid solved using Finite Element Method. An axisymmetric finite element a triangular cross-section was for modeli...

This paper investigates the effect of metallic sheaths on losses and temperature of medium voltage power cables. Two grounding methods of sheaths, including both ends bonding and single point bonding that causes different situations on cable ampacity, are considered. Electrical losses of cables that are main sources of heat are calculated in both conductor and metallic sheath of the cables. She...