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論文
弾性波伝播 3 次元有限要素解析における要素分割選定方法の一提案
著者:
石田 仁志,Hitoshi ISHIDA,飯井 俊行,Toshiyuki MESHII
発刊日:
公開日:
キーワードタグ:
This study proposes an element size selection method for 3D finite element elastic waves propagation analysis, under the condition time increment has been already selected. The method was named as Impact-Meshing method, according to the key idea to select an appropriate mesh by monitoring strain energy due to impact loading (static analysis), instead of the actual excitation (time series analysis). Because our method does not require time series analysis for mesh size selection, the total CPU time was...
英字タイトル:
A proposal for Element Size Selection Method for 3-D Finite Element Elastic Waves Propagation Analysis
論文
放射線取り扱い施設における重度被ばく者の線量評価システム
著者:
高橋 史明,Fumiaki TAKAHASHI,重森 祐志,Yuuji SHIGEMORI,関 暁之,Akiyuki SEKI
発刊日:
公開日:
キーワードタグ:
Failure of safety management system can bring about a heavily exposed person in maintenance of a radiation facility, though such a case is very rare. A method using radiation transport code has advantages in an assessment of dose distribution inside a human body. Complicated procedures, however, are needed to prepare an input-file and to derive radiation dose based upon descriptions of an output-file in a numerical analysis using a radiation transport code. Thus, a system was developed to set up nece...
英字タイトル:
Dose Assessment System for a Heavily Exposed Person in Radiation Facility
論文
鉛直分岐を有する配管網内検査ロボットの開発
著者:
久保 宏道,Koudou KUBO,長屋 幸助,Kosuke NAGAYA,吉野 智彦,Tomohiko YOSHINO,星 敬之,Takayuki HOSHI,村上 岩範,Iwanori MURAKAMI
発刊日:
公開日:
キーワードタグ:
A new robot is presented which is able to climb on a perpendicular piping with branches and moves on the ceiling in the piping. The robot is a crawler type whose crawler has made of magnetic tips. The magnetic tips of the robot adhere to the piping made of iron due to magnetic forces. When the adhesive force is larger than the gravity force of the robot, a connection between the robot and the ceiling can be maintained. That is, the inspection robot in piping can move freely in solid piping of all shap...
英字タイトル:
Inspection Robot Climbing Vertical Cross Piping
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