scholarly journals Advancement of elemental analytical model in LEAP-III code for tube failure propagation

2020 ◽  
Vol 7 (3) ◽  
pp. 19-00548-19-00548
Author(s):  
Akihiro UCHIBORI ◽  
Hideki YANAGISAWA ◽  
Takashi TAKATA ◽  
Jiazhi LI ◽  
Sunghyon JANG
Keyword(s):  
Analytical Model ◽  
Failure Propagation ◽  
Tube Failure

Study of Pullout Performance of Self-Tapping Screws for Human Bone

2011 ◽  
Author(s):  
Zhijun Wu ◽  
Sayed A. Nassar ◽  
Xianjie Yang
Keyword(s):  
Finite Element ◽  
Stress Distribution ◽  
Analytical Model ◽  
Material Properties ◽  
Pedicle Screws ◽  
Pullout Strength ◽  
Bone Material ◽  
Synthetic Bone ◽  
Failure Propagation ◽  
Device Applications

The study investigates the pullout strength of self-tapping pedicle screws using analytical, finite element, and experimental methodologies with focus on medical device applications. The stress distribution and failure propagation around implant threads in the synthetic bone during the pullout process, as well as the pullout strength of pedicle screws, are explored. Based on the FEA results, an analytical model for the pullout strength of the pedicle screw is constructed in terms of the synthetic bone material properties, screw size, and implant depth. The characteristics of pullout behavior of self-tapping pedicle screws are discussed. Both the analytical model and finite element results are validated using experimental techniques.

Multiphysics Analysis System for Tube Failure Accident in Steam Generator of Sodium-Cooled Fast Reactor

2013 ◽  
Author(s):  
Akihiro Uchibori ◽  
Shin Kikuchi ◽  
Akikazu Kurihara ◽  
Hirotsugu Hamada ◽  
Hiroyuki Ohshima
Keyword(s):  
Heat Transfer ◽  
Steam Generator ◽  
Chemical Reaction ◽  
Numerical Models ◽  
Stress Evaluation ◽  
Transfer Tube ◽  
Failure Propagation ◽  
Computer Codes ◽  
Analysis System ◽  
Tube Failure

Multiphysics analysis system was newly developed to evaluate possibility of failure propagation occurrence under heat transfer tube failure accident in a steam generator of sodium-cooled fast reactors. The analysis system consists of the computer codes, SERAPHIM, TACT, RELAP5, which are based on the mechanistic numerical models. The SERAPHIM code calculates the multicomponent multiphase flow involving sodium-water chemical reaction. In this study, numerical models for the chemical reaction about production of a sodium monoxide and its transport process were constructed to enable evaluation of a wastage environment. The TACT code was developed to calculate heat transfer from the reacting jet to the adjacent tube and to predict the tube failure occurrence. The TACT code was integrated by the numerical models of the fluid-structure thermal coupling, the temperature and stress evaluation, the wastage evaluation and the failure judgment. The RELAP5 code evaluates thermal hydraulic behavior of water inside the tube. The original heat transfer correlations were corrected for the rapidly heated tube in the present work.

scholarly journals Development of numerical analysis code LEAP-III for tube failure propagation

2020 ◽  
Vol 86 (883) ◽  
pp. 19-00353-19-00353
Author(s):  
Akihiro UCHIBORI ◽  
Hideki YANAGISAWA ◽  
Takashi TAKATA ◽  
Hiroyuki OHSHIMA
Keyword(s):  
Numerical Analysis ◽  
Failure Propagation ◽  
Tube Failure

Development of Numerical Analysis Code LEAP-III for Tube Failure Propagation

2019 ◽  
Vol 2019.24 (0) ◽  
pp. B122
Author(s):  
Akihiro UCHIBORI ◽  
Hideki YANAGISAWA ◽  
Takashi TAKATA ◽  
Hiroyuki OHSHIMA
Keyword(s):  
Numerical Analysis ◽  
Failure Propagation ◽  
Tube Failure

Improvement of steam generator tube failure propagation analysis code LEAP for evaluation of overheating rupture

2018 ◽  
Vol 56 (2) ◽  
pp. 201-209
Author(s):  
Akihiro Uchibori ◽  
Hideki Yanagisawa ◽  
Takashi Takata ◽  
Akikazu Kurihara ◽  
Hirotsugu Hamada ◽  
...  
Keyword(s):  
Steam Generator ◽  
Steam Generator Tube ◽  
Propagation Analysis ◽  
Failure Propagation ◽  
Tube Failure

ADVANCEMENT OF ELEMENTAL ANALYSIS MODEL IN LEAP-III CODE FOR TUBE FAILURE PROPAGATION

2019 ◽  
Vol 2019.27 (0) ◽  
pp. 2136
Author(s):  
Akihiro Uchibor ◽  
Hideki Yanagisawa ◽  
Takashi Takata ◽  
Jiazhi Li ◽  
Sunghyon Jang
Keyword(s):  
Elemental Analysis ◽  
Analysis Model ◽  
Failure Propagation ◽  
Tube Failure

ANALYTICAL MODEL OF SUPEREXCHANGE

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-911-C8-912
Author(s):  
Yu. V. Rakitin ◽  
V. T. Kalinnikov
Keyword(s):  
Analytical Model
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