Evaluation of Elasto-Plastic Fracture Parameters for Concrete Based on Poly-Linear Approximation Analysis of Tension Softening Diagram

Kitsutaka, Yoshinori

doi:10.3130/aijs.60.17_1

Cited by 3 publications

(5 citation statements)

References 5 publications

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“…To overcome some of the above problems, different approaches have been adopted. Kitsutaka (1995 and1997) used an stepped analysis in combination with a poly-linear -w relationship, which is an interesting approach, as the shape of the -w relationship is not fixed. Uchida et al (1995) utilised the stepped analysis technique to determine poly-linear -w relationships for various kinds of concrete.…”

Section: Tinmentioning

confidence: 99%

Fracture Properties of FRC Determined through Inverse Analysis of Wedge Splitting and Three-Point Bending Tests

Löfgren

Stang

Olesen

2005

ACT

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Fracture properties of five different steel fibre-reinforced concretes have been determined, using the wedge splitting test method (WST) and three-point bending tests (3PBT). Furthermore, for the WST method, two different specimen sizes have been investigated. Through inverse analyses, stress-crack opening ( -w) relationships have been determined for each mix and test method. Results from this investigation demonstrate the applicability of the WST method, show that inverse analysis can be used to determine stress-crack opening relationships, and the result demonstrate the effect of increased fibre content and the w/b-ratio. The major factor contributing to the differences in the determined stress-crack opening relationships is believed to be related to the variation in the number of fibres across the fracture plane. However, taking this into consideration, the inverse analyses indicate no systematic differences in the determined parameters between two WST specimen sizes, while the 3PBT seems to give slightly higher post-cracking stresses.

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Section: Tinmentioning

confidence: 99%

Fracture Properties of FRC Determined through Inverse Analysis of Wedge Splitting and Three-Point Bending Tests

Löfgren

Stang

Olesen

2005

ACT

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“…• Limited number of input parameters -in contrast to other methods [10,11,36], neither tensile strength nor fracture energy have to be specified as an input for the proposed method.…”

Section: Discussionmentioning

confidence: 99%

“…The incremental inverse analysis [10,11] provides a unique solution for a given discretization of the experimental data, as the slope of the TS relation is related to the slope of the load-deflection curve by a closed-form expression [10]. The main disadvantage of this method consists in the fact that the TS relation is identified based on the local cohesive behaviour of a small part of the fracture surface just ahead of the notch (the notch-tip element).…”

Section: Introductionmentioning

confidence: 99%

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Inverse analysis of traction-separation relationship based on sequentially linear approach

Vorel

Kabele

2019

Computers & Structures

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Traction-separation relationship is an important material characteristic describing the fracture behaviour of quasi-brittle solids. A new numerical scheme for identification of the traction-separation relation by inverse analysis of data obtained from various types of fracture tests is proposed. Due to employing the concept of sequentially linear analysis, the method exhibits a superior numerical stability and versatility. The applicability and effectiveness of the proposed method is demonstrated on examples involving identification of the traction-separation relationship using experimental data from various test configurations.

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“…For most of the inverse analyses, the shape of the TSC was found to be linear [27], bilinear [28,29], trilinear or exponential. Other studies have performed trials without using a prescribed shape for the TSC, to construct a polylinear softening model [16,30,31]. Although optimisation algorithms were utilised in the numerical analysis, ill-conditioned problems were still critical in the inverse analysis.…”

Section: Introductionmentioning

confidence: 99%

Tension softening curves of plain concrete

Chen

2013

Construction and Building Materials

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The tension softening curves (TSCs) of plain concrete with compressive strengths varying between 40 and 90 MPa were estimated by performing three-point bending tests on pre-notched beams. Crack evolution and full-field deformation in the beams were measured using the electronic speckle pattern interferometry technique. The crack characteristics, including the crack opening displacement profiles, the width of the fracture process zone and the length of the crack, were evaluated. By using a newly developed incremental displacement collocation method, the TSCs of plain concrete were determined. To facilitate the use of TSCs by commercial finite element packages, the estimated TSCs were simplified to bilinear and exponential curves, and the related parameters were determined.

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Evaluation of Elasto-Plastic Fracture Parameters for Concrete Based on Poly-Linear Approximation Analysis of Tension Softening Diagram

Cited by 3 publications

References 5 publications

Fracture Properties of FRC Determined through Inverse Analysis of Wedge Splitting and Three-Point Bending Tests

Fracture Properties of FRC Determined through Inverse Analysis of Wedge Splitting and Three-Point Bending Tests

Inverse analysis of traction-separation relationship based on sequentially linear approach

Tension softening curves of plain concrete

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