| 種別 | Paper |
| 主題 | METHOD TO EVALUATE TRANSITION OF STRAIN SOFTENING IN COMPACT TENSION TEST OF CONCRETE |
| 副題 | |
| 筆頭著者 | Noriaki NOMURA |
| 連名者1 | Masanori IZUMI |
| 連名者2 | Hirozo MIHASHI |
| 連名者3 | |
| 連名者4 | |
| 連名者5 | |
| キーワード | |
| 巻 | 10 |
| 号 | 2 |
| 先頭ページ | 855 |
| 末尾ページ | 858 |
| 年度 | 1988 |
| 要旨 | INTRODUCTION Strain softening plays a strong role in a numerical analysis of the material breakdown process caused by cracking behavior of a concrete structure. The shape of strain softening diagram greatly influences the whole behavior of structure as expressed by a complete, load-displacement curve. Roelfstra and Wittmann have developed the method to estimate the parameters of bilinear Strain softening diagram by means of least square approximation of an experimental load-displacement and calculated one. We have made fundamental discussion on this powerful method with potential abilities and represented the revised technique of the parameter estimation. This paper describes an advanced method to estimate parameters varying in the ligament of a compact tension (CT) test specimen. CONCLUDING REMARKS The present method can evaluate the varying parameters of strain softening diagram for the idealized example of load- displacement curve. Although an actual experimental data containing occasionally local irregularity can affect the convergence of solution and the stability in the least square calculation, the method is applicable in principal to the concerned with the micro crack process of concrete material. |
| PDFファイル名 | 010-01-1152.pdf |