التفاصيل البيبلوغرافية
| العنوان: |
Bond-slip analysis via a cohesive-zone model simulating damage, friction and interlocking. |
| المؤلفون: |
Serpieri, R., Varricchio, L., Sacco, E., Alfano, G. |
| المصدر: |
Fracture & Structural Integrity / Frattura ed Integrità Strutturale; 2014, Vol. 8, p284-292, 9p |
| مصطلحات موضوعية: |
COHESIVE strength (Mechanics), SIMULATION methods & models, FRICTION, DEFORMATIONS (Mechanics), ADHESION |
| مستخلص: |
A recently proposed cohesive-zone model which effectively combines damage, friction and mechanical interlocking has been revisited and further validated by numerically simulating the pull-out test, from a concrete block, of a ribbed steel bar in the post-yield deformation range. The simulated response is in good agreement with experimental measurements of the bond slip characteristics in the post-yield range of deformed bars reported in the literature. This study highlights the main features of the model: with physically justified and relatively simple arguments, and within the sound framework of thermodynamics with internal variables, the model effectively separates the three main sources of energy dissipation, i.e. loss of adhesion, friction along flat interfaces and mechanical interlocking. This study provides further evidence that the proposed approach allows easier and physically clearer procedures for the determination of the model parameters of such three elementary mechanical behaviours, and makes possible their interpretation and measurement as separate material property, as a viable alternative to lumping these parameters into single values of the fracture energy. In particular, the proposed approach allows to consider a single value of the adhesion energy for modes I and II. [ABSTRACT FROM AUTHOR] |
|
Copyright of Fracture & Structural Integrity / Frattura ed Integrità Strutturale is the property of Gruppo Italiano Frattura and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Full Text Finder