Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
; Ishikawa, Masayuki*; kasahara, Naoto; *;
PNC TN9460 92-002, 25 Pages, 1992/03
For the purpose of advancement of evaluation methods in design code and of design evaluation based on advanced design code, we analyze stress-strain behaviors of structures by FINAS computer code and process analyzed results. Present program which deal with post-tape of FINAS can not perform special evaluation to examine structural design methods. Therefore, we developed stress-strain calculation program "RANGE" which can process post-tapes of FINAS. This report descrive functions and arrangements etc. of "RANGE" program. The main functions of "RANGE" are as follows. (1)extrapolation of stress and strain to surface (2)normalization and linearization of stress and strain (3)estimation of stress and strain range (decision of extreme stress/strain) (4)calculation of equivalent stress-strain (5)estimation of strain concentration factor (6)estimation of elastic follow-up parameters By using above functions, we can easily examine elastic, inelastic and thermal stress analysis results and attempt efficient works of advancement.
Kasahara, Naoto; ; Ishikawa, Masayuki*
PNC TN9410 89-075, 85 Pages, 1989/05
The weldments make reduction or strength on structures with those structural discontinuities and metallurgical ones. An analytical study on structural discontinuity effects is made for the development of the evaluation methods on weldments. This research is devided into two items. The one is survey about actual wwldment of the junction between STST sodium loop and the specimen where sodium leaked. The other is finite element analyses or various structural discontinuities of weldments subjected to mechanical and thermal loads. A su㎜ary of the results is shown below. The fundamental factor of the STST sodium reekage was round to be stress concentration at the weldment through the former survey. Stress concentration factors of circumferential weldments were clarified that those ractors under thermal loads were no more than ones of bending loads, and the factors in the case of bending were lower than ones under membrane loads. Rearranging these results, general stress concentration factors at circumferential weldments are proposed.
