A Version of the Failure Criterion Modification for Plane Concrete

2017 ◽  
Vol 755 ◽  
pp. 300-321 ◽  
Author(s):  
Volodymyr I. Korsun ◽  
Yu.Yu. Kalmykov ◽  
S.Yu. Makarenko
Keyword(s):  
Comparative Analysis ◽  
Solid Mechanics ◽  
Concrete Strength ◽  
Failure Criteria ◽  
Analytic Description ◽  
Deformable Solid ◽  
Theoretical Approaches ◽  
Concrete Failure ◽  
Stress States ◽  
Multiaxial Loadings

The paper is about the generally accepted in the deformable solid mechanics principles of constructing limiting surfaces of concrete strength in the principal stress space. The background and theoretical approaches taken by different researchers to describe the functions of deviatoric and meridional curves as the basic elements which determine the surface configuration of concrete strength were analyzed.There was carried out a comparative analysis of different authors’ suggestions on an analytic description of concrete strength for different stress states and a comparison of the developed criteria and the results of short-term tests of plane concrete under multiaxial loadings. Comparing the methods taken for developing the interpolation functions of deviatoric and meridional curves, it was inferred that the application of different approaches to the development of concrete failure criteria is effective. Keeping in mind the results of the comparative analysis of the prerequisites taken to develop the above failure criteria and the requirements of a better approximation of the experimental data, there are made new suggestions to describe concrete strength for the general case of stress state.

Review of Strength and Failure Criteria for Concrete After Freeze-Thaw Damage

2012 ◽  
Vol 253-255 ◽  
pp. 456-461
Author(s):  
Yan Fu Qin ◽  
Bin Tian ◽  
Gang Xu ◽  
Xiao Chun Lu
Keyword(s):  
Normal State ◽  
Concrete Strength ◽  
Failure Criteria ◽  
Concrete Durability ◽  
Freezing And Thawing ◽  
Normal Concrete ◽  
Strength Criteria ◽  
Freeze Thaw ◽  
Ordinary Concrete ◽  
Concrete Failure

Frost resistance research is one of the important subject of concrete durability, however strength criteria is an important part of the study of mechanical behavior of concrete. So far, about concrete failure criteria are almost for normal concrete, which the domestic and overseas scholars have comparative detailed research in every respect to it, and to freeze-thaw damage of concrete but few research. Based on the summary of the existing ordinary concrete strength and failure criteria in normal state and after freeze-thaw damage，this paper have a brief comment of failure criteria on concrete after freeze-thaw damage. For later research about concrete strength and failure criteria under freezing and thawing cycle provide the reference.

scholarly journals YOUTH PARTIES IN EU COUNTRIES

2021 ◽  
Vol 3 (50) ◽  
Author(s):  
Luidmyla Ivanivna Huk ◽  
Marta Oleksandrivna Grabchak
Keyword(s):  
Comparative Analysis ◽  
Political Party ◽  
Eu Countries ◽  
Theoretical Approaches ◽  
The Eu

The article attempts to conduct a comparative analysis of youth parties in the EU. Investigate theoretical approaches to understanding the concept of "political party" - as well as to highlight the main features and characteristics of youth parties.

scholarly journals Bearing Capacity Analysis and Zoning of Kathmandu for Shallow Foundations

2018 ◽  
Vol 4 ◽  
pp. 111-117
Author(s):  
Ram Krishna Danai ◽  
Indra Prasad Acharya
Keyword(s):  
Bearing Capacity ◽  
Numerical Models ◽  
Failure Criteria ◽  
Unit Weight ◽  
Soil Parameters ◽  
Primary Concern ◽  
Borehole Data ◽  
Element Analysis ◽  
Theoretical Approaches ◽  
Coulomb Failure

The bearing capacity of foundation is the primary concern in the field of geotechnical engineering. In this study numerical models are developed for each of the secondary borehole data collected around Kathmandu valley. Finite element analysis (i.e. PLAXIS 2D) is carried out using Mohr-coulomb failure criteria to represent two dimensional soil models. Foundation is aimed to model as square footing and prescribed settlement of 10% of footing width is provided to obtain corresponding bearing capacity. In plaxis, effective stress is considered as an ultimate bearing capacity. Drained behavior with axisymmetical models have been considered for soil model in plaxis software. Various soil parameters like C (Cohesion), γ (unit weight), Φ (Frictional angle), ν (Poison ratio), E (Elasticity) for each 1.5m and 3m depths have been considered in models and in theoretical approaches.

Research Status of Concrete Strength Theory Based on Stress and Strain

2014 ◽  
Vol 670-671 ◽  
pp. 445-448
Author(s):  
Guo Jun Liu
Keyword(s):  
Failure Criterion ◽  
Concrete Strength ◽  
Failure Criteria ◽  
Practical Significance ◽  
Engineering Structures ◽  
Research Status ◽  
Advantages And Disadvantages ◽  
Strength Failure ◽  
Micro Cracks ◽  
Strain Space

In the civil engineering structures, when concrete structure withstand external loads, internal defects such as micro-cracks gradually developed, eventually will lead to the destruction of the concrete. Currently, there are two types of strength failure criterion of concrete, strength failure criterion based on stress-space and strength failure criterion based on strain-space, both of which have advantages and disadvantages, this paper introduces the research status of the two strength failure criteria of concrete, and the problems need further study in the future. It plays a strong practical significance in scientific research.

A Negative Theory of Justice

Theoria ◽  
2020 ◽  
Vol 67 (164) ◽  
pp. 86-117
Author(s):  
Leonard Mazzone
Keyword(s):  
Comparative Analysis ◽  
Power Relations ◽  
Theoretical Perspective ◽  
Three Dimensional ◽  
Theoretical Framework ◽  
Philosophical Theory ◽  
Theory Of Justice ◽  
Theoretical Approaches ◽  
Immanent Critique

This article outlines the chief challenges concerning the philosophical theories of emancipation and clarifies the solutions provided by a so-called negative theory of justice. Besides highlighting the classic questions that every philosophical theory of emancipation is expected to answer, the article aims to highlight the link between this theoretical framework and an immanent critique of conditions of domination. Moreover, it sheds light on the main differences between this theoretical perspective and Honneth’s theory of recognition, Fraser’s three-dimensional conception of justice, and the critique of power relations recently advanced by Rainer Forst. The comparative analysis of these theoretical approaches will make it possible to highlight and appreciate the main merits of a so-called negative theory of justice that combines a multidimensional diagnosis of existing asymmetries of power with an immanent critique of their justifications.

Structural Assessment of Main Steam Line and Containment Building Under Steam Explosion Conditions

2015 ◽  
Author(s):  
Seung-Huyn Kim ◽  
Yoon-Suk Chang ◽  
Sungchu Song ◽  
Yong-Jin Cho
Keyword(s):  
Steam Explosion ◽  
Failure Criteria ◽  
Steam Line ◽  
Dynamic Loads ◽  
Steam Generators ◽  
Structural Assessment ◽  
Concrete Failure ◽  
Nuclear Component ◽  
Main Steam Line ◽  
Main Steam

The steam explosion is a fuel-coolant interaction process where the heat transfer from the melt to water is quite intense and rapid. This phenomenon may threat integrity of nuclear components and structures. For instance, the dynamic loads on the reactor cavity and the reactor lower plenum could potentially lead to failure of the main steam lines connected to the steam generators. In addition, since the main steam line extends to the containment wall, failure of the containment building may occur. The object of present study is to examine characteristics of Main Steam Line (MSL) and containment building under the steam explosion conditions. In this context, the corresponding FE models were generated and previously determined displacements of penetration piping were used as loading conditions. Subsequent FE analyses were conducted for the main steam line and containment building to calculate stresses and crack evaluations. Finally, structural assessment of nuclear component and structure combined with concrete failure criteria was performed and their results were discussed.

Method activation end date in the past. direction:re

Auditor ◽  
2015 ◽  
Vol 1 (8) ◽  
pp. 55-59
Author(s):  
Гаджиева ◽  
P. Gadzhieva
Keyword(s):  
Comparative Analysis ◽  
The Past ◽  
Theoretical Approaches

The article presents a comparative analysis of the classical theoretical approaches to the interpretation of the concept of financial results. The author offers his vision of the economic content of the concept to the changed market conditions in the environment.

A Teaching Note on Failure Criteria and Failure Surfaces for Ductile and Brittle Materials

1994 ◽  
Vol 22 (1) ◽  
pp. 1-13 ◽  
Author(s):  
G. S. Schajer
Keyword(s):  
Isotropic Material ◽  
Three Dimensional ◽  
Brittle Materials ◽  
Failure Criteria ◽  
Material Failure ◽  
Stress Space ◽  
Ductile Materials ◽  
Basic Concepts ◽  
Multiaxial Loadings

This note discusses some basic concepts underlying isotropic material failure criteria under multiaxial loadings. It also describes the shapes and features of the associated failure surfaces in three-dimensional stress space. Failure criteria for ductile materials are first reviewed. They are then generalized so that they may also be applied to brittle materials. The relationships among the various failure criteria, the shapes and characteristics of the associated failure surfaces, and the special features of physically acceptable isotropic failure criteria are then considered.

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