Effect of specimen size on the dissipated energy density in compression

被引：15

作者：

Ferro, Giuseppe ^{[1
]}

Carpinteri, Alberto ^{[1
]}

机构：

[1] Politecn Torino, Dept Struct Engn & Geotech, I-10129 Turin, Italy

来源：

JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME | 2008年 / 75卷 / 04期

关键词：

compression test; concrete; dissipated energy density; size effects; microstructural disorder; fractals;

D O I：

10.1115/1.2910899

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The size effects in compression on drilled cylindrical concrete specimens obtained from a unique concrete block over a large scale range (1:19) are analyzed. The experimental results show scale effects on dissipated energy density rather than on the compressive strength. A theoretical explanation for such a phenomenon is presented, assuming a noninteger physical dimension of the subdomain where dissipation occurs. A comparison between experimental and theoretical values is discussed and a renormalization procedure to obtain a scale-independent constitutive law is presented.

引用

页码：0410031 / 0410038

页数：8

共 45 条

[1] THE FAILURE OF BRITTLE SOLIDS CONTAINING SMALL CRACKS UNDER COMPRESSIVE STRESS STATES [J].

ASHBY, MF ;

HALLAM, SD .

ACTA METALLURGICA, 1986, 34 (03) :497-510

[2]

Bazant ZP, 1997, J ENG MECH, V123, P162

[3]

BAZANT ZP, 1984, J ENG MECH-ASCE, V110, P518

[4] NOTCH SENSITIVITY IN FRACTURE TESTING OF AGGREGATIVE MATERIALS [J].

CARPINTERI, A .

ENGINEERING FRACTURE MECHANICS, 1982, 16 (04) :467-481

[5] FRACTAL NATURE OF MATERIAL MICROSTRUCTURE AND SIZE EFFECTS ON APPARENT MECHANICAL-PROPERTIES [J].

CARPINTERI, A .

MECHANICS OF MATERIALS, 1994, 18 (02) :89-101

[6] SIZE EFFECTS ON TENSILE FRACTURE PROPERTIES - A UNIFIED EXPLANATION-BASED ON DISORDER AND FRACTALITY OF CONCRETE MICROSTRUCTURE [J].

CARPINTERI, A ;

FERRO, G .

MATERIALS AND STRUCTURES, 1994, 27 (174) :563-571

[7] MULTIFRACTAL NATURE OF CONCRETE FRACTURE SURFACES AND SIZE EFFECTS ON NOMINAL FRACTURE ENERGY [J].

CARPINTERI, A ;

CHIAIA, B .

MATERIALS AND STRUCTURES, 1995, 28 (182) :435-443

[8] SCALING LAWS AND RENORMALIZATION-GROUPS FOR STRENGTH AND TOUGHNESS OF DISORDERED MATERIALS [J].

CARPINTERI, A .

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 1994, 31 (03) :291-302

[9] A fractal comminution approach to evaluate the drilling energy dissipation [J].

Carpinteri, A ;

Pugno, N .

INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS, 2002, 26 (05) :499-513

[10] A multifractal comminution approach for drilling scaling laws [J].

Carpinteri, A ;

Pugno, N .

POWDER TECHNOLOGY, 2003, 131 (01) :93-98

← 1 2 3 4 5 →