1,721,412 research outputs found
On the efficiency of new and old strategies for solving contact problems
No full textThe most recent progresses in the field of numerical treatment of contact problems permit to obtain high eficiency with a close correlation to the microscopical characteristics of the contact surfaces. In this paper a modification of standard strategies to satisfy contact constraintsispresented which yields a non-linear, srnaooth change of contact stiffness around the solution. Thus the adopted approach leads to an iterative method which does not depict numerical instabilities within the solution search process. This fact permits to achieve a better convergence rate with respect to standard methods
sj-jpg-4-jbf-10.1177_22808000221142679 – Supplemental material for In vivo investigation of open-pored magnesium scaffolds LAE442 with different coatings in an open wedge defect
No full textSupplemental material, sj-jpg-4-jbf-10.1177_22808000221142679 for In vivo investigation of open-pored magnesium scaffolds LAE442 with different coatings in an open wedge defect by Marlene Schmidt, Anja-Christina Waselau, Franziska Feichtner, Stefan Julmi, Christian Klose, Hans Jürgen Maier, Peter Wriggers and Andrea Meyer-Lindenberg in Journal of Applied Biomaterials & Functional Materials</p
sj-jpg-3-jbf-10.1177_22808000221142679 – Supplemental material for In vivo investigation of open-pored magnesium scaffolds LAE442 with different coatings in an open wedge defect
No full textSupplemental material, sj-jpg-3-jbf-10.1177_22808000221142679 for In vivo investigation of open-pored magnesium scaffolds LAE442 with different coatings in an open wedge defect by Marlene Schmidt, Anja-Christina Waselau, Franziska Feichtner, Stefan Julmi, Christian Klose, Hans Jürgen Maier, Peter Wriggers and Andrea Meyer-Lindenberg in Journal of Applied Biomaterials & Functional Materials</p
sj-jpg-1-jbf-10.1177_22808000221142679 – Supplemental material for In vivo investigation of open-pored magnesium scaffolds LAE442 with different coatings in an open wedge defect
No full textSupplemental material, sj-jpg-1-jbf-10.1177_22808000221142679 for In vivo investigation of open-pored magnesium scaffolds LAE442 with different coatings in an open wedge defect by Marlene Schmidt, Anja-Christina Waselau, Franziska Feichtner, Stefan Julmi, Christian Klose, Hans Jürgen Maier, Peter Wriggers and Andrea Meyer-Lindenberg in Journal of Applied Biomaterials & Functional Materials</p
sj-jpg-5-jbf-10.1177_22808000221142679 – Supplemental material for In vivo investigation of open-pored magnesium scaffolds LAE442 with different coatings in an open wedge defect
No full textSupplemental material, sj-jpg-5-jbf-10.1177_22808000221142679 for In vivo investigation of open-pored magnesium scaffolds LAE442 with different coatings in an open wedge defect by Marlene Schmidt, Anja-Christina Waselau, Franziska Feichtner, Stefan Julmi, Christian Klose, Hans Jürgen Maier, Peter Wriggers and Andrea Meyer-Lindenberg in Journal of Applied Biomaterials & Functional Materials</p
sj-jpg-2-jbf-10.1177_22808000221142679 – Supplemental material for In vivo investigation of open-pored magnesium scaffolds LAE442 with different coatings in an open wedge defect
No full textSupplemental material, sj-jpg-2-jbf-10.1177_22808000221142679 for In vivo investigation of open-pored magnesium scaffolds LAE442 with different coatings in an open wedge defect by Marlene Schmidt, Anja-Christina Waselau, Franziska Feichtner, Stefan Julmi, Christian Klose, Hans Jürgen Maier, Peter Wriggers and Andrea Meyer-Lindenberg in Journal of Applied Biomaterials & Functional Materials</p
Fatigue strength assessment of HP stiffener joints with fillet-welded attachments using the peak stress method
No full textThe Peak Stress Method (PSM) is a simplified, finite element-based technique to
readily estimate the Notch Stress Intensity Factors (NSIFs) at the tip of sharp-V-shaped
notches. More precisely, it was shown that the maximum principal stress evaluated at the Vnotch
tip by means of a rather coarse finite element analysis is proportional to the mode I
NSIF, as far as mode II and mode III stresses are negligible. When fatigue strength
assessment of fillet welded joints is performed according to the NSIF approach, the weld toe
profile is modeled as a sharp V-notch having the toe radius equal to zero (the worst case
hypothesis) and the peak stress can be used as design stress combined with a properly
calibrated design scatter band. Due to its computational simplicity, the PSM appears rather
useful for the everyday design practice of the shipbuilding industry. In the present paper the
PSM is briefly described and applied to assess the fatigue strength of joints between HP
stiffeners with fillet-welded cover plates adopted by the shipbuilding industry, for which full
scale fatigue test data are available. By applying the PSM, good agreement between
theoretical and experimental fatigue lives is obtained despite the complex geometry and the
different loading conditions of the tests
Unsteady FSI simulations of downwind sails
No full textA numerical model for the simulation of the fluid-structure interaction (FSI) between the wind and the sails of a sailing boat is presented. This problem is characterized by an extremely light structure (in particular when downwind sails, spinnaker or gennaker, are considered) experiencing large displacements under the action of a complex (turbulent and separated) flow field. The model is based on a strongly coupled segregated FSI approach which guarantees adequate stability properties for the FSI problem at hand. A Dirichlet-Neumann coupling algorithm is adopted with a finite-volume Reynolds Averaged Navier-Stokes (RANS) flow solver interacting with a finite-element shell structural solver. Numerical results of unsteady FSI simulations are presented and discussed
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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