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Explanation of size effect in concrete fracture using non-uniform energy distribution

หน่วยงาน Central Queensland University, Australia

รายละเอียด

ชื่อเรื่อง : Explanation of size effect in concrete fracture using non-uniform energy distribution
นักวิจัย : Duan, Kai. , Hu, Xiaozhi. , Wittmann, F.H. (Folker H.)
คำค้น : Fracture mechanics. , Building materials. , Engineering. , Concrete. , Strategic basic research. , 861001 Cement and Concrete Materials. , 090503 Construction Materials. , 091308 Solid Mechanics. , 091599 Interdisciplinary Engineering not elsewhere classified.
หน่วยงาน : Central Queensland University, Australia
ผู้ร่วมงาน : -
ปีพิมพ์ : 2545
อ้างอิง : http://hdl.cqu.edu.au/10018/40313 , cqu:5150
ที่มา : Duan, K, Hu, X-Z & Wittmann, FH 2002, 'Explanation of size effect in concrete fracture using non-uniform energy distribution',Materials and Structures, vol. 35, pp. 326-331.http://dx.doi.org/10.1007/BF02483151 (viewed 28/1/10)
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Materials and structures. Netherlands. : Springer Netherlands, 2002. Vol. 35, (July 2002), p. 326-331 6 pages Refereed 1359-5997 1871-6873 (online) , ACQUIRE [electronic resource] : Central Queensland University Institutional Repository.
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

A local fracture energy model originally proposed to explain the influence of fracture process zone (FPZ) on fracture energy of cementitious materials is further developed in this study. By assuming a bilinear distribution for the fracture energy distribution, the ligament-dependentfracture energy Gf is obtained. The analytical expression of Gf contains two important parameters: the intrinsic size-independent fracture energy Gf and a reference ligament size at which determines the inte section of the twolinear fracture energy functions. It is shown that the ligament-dependent Gf approaches the size-independent GF asymptotically. As a result, Gf can be determined from the ligament-dependent Gf results. It is also found that while the reference ligament size aI* is influenced by the specimen geometry, size and loading conditions, thederived fracture energy Gf is virtually constant. The present local fracture energy distribution model is also discussed and compared with the original local fracture energy model.

บรรณานุกรม :
Duan, Kai. , Hu, Xiaozhi. , Wittmann, F.H. (Folker H.) . (2545). Explanation of size effect in concrete fracture using non-uniform energy distribution.
    กรุงเทพมหานคร : Central Queensland University, Australia.
Duan, Kai. , Hu, Xiaozhi. , Wittmann, F.H. (Folker H.) . 2545. "Explanation of size effect in concrete fracture using non-uniform energy distribution".
    กรุงเทพมหานคร : Central Queensland University, Australia.
Duan, Kai. , Hu, Xiaozhi. , Wittmann, F.H. (Folker H.) . "Explanation of size effect in concrete fracture using non-uniform energy distribution."
    กรุงเทพมหานคร : Central Queensland University, Australia, 2545. Print.
Duan, Kai. , Hu, Xiaozhi. , Wittmann, F.H. (Folker H.) . Explanation of size effect in concrete fracture using non-uniform energy distribution. กรุงเทพมหานคร : Central Queensland University, Australia; 2545.