Browsing Ústav stavební mechaniky by Title
Now showing items 1-20 of 79
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Analysis of accuracy of Williams series approximation of stress field in cracked body – influence of area of interest around crack-tip on multi-parameter regression performance
(Gruppo Italiano Frattura, 2017-01-01)A study on the accuracy of an approximation of the stress field in a cracked body is presented. Crack-tip stress tensor is expressed using the linear elastic fracture mechanics (LEFM) theory in this work, more precisely ... -
Assessment of crack stability in a quasi-brittle particle composite
(Elsevier, 2017-01-01)Fracture behaviour of a crack in a particle (silicate based) composite is studied. The crack propagation depends not only on mutual elastic mismatch of matrix and aggregate but also the influence of the interfacial transition ... -
Assessment of the transportation route of oversize and excessive loads in relation to the load-bearing capacity of existing bridges.
(IOP Publishing, 2017-09-15)Transportation routes of oversize and excessive loads are currently planned in relation to ensure the transit of a vehicle through critical points on the road. Critical points are level-intersection of roads, bridges etc. ... -
Boundary Layer Effect on Behavior of Discrete Models
(MDPI, 2017-02-10)The paper studies systems of rigid bodies with randomly generated geometry interconnected by normal and tangential bonds. The stiffness of these bonds determines the macroscopic elastic modulus while the macroscopic ... -
Cement based composites for thin building elements: Fracture and fatigue parameters
(Elsevier, 2010-06-06)For application in civil engineering structures and also for strengthening existing structures cement-based composites are one of the most frequently used materials. Although many studies have been conducted on the mechanical ... -
Comparison of fatigue crack propagation behaviour in two steel grades S235, S355 and a steel from old crane way
(EDP Sciences, 2020-03-05)Utilization of various steel grades in civil engineering allows designing bridges, bridge elements or simple structures according to their fracture mechanical properties. The service intervals of structures, which are going ... -
Comparison of Fracture Resistance of the Normal and High Strength Concrete Evaluated by Brazilian Disc Test
(MPDI, 2018-05-19)Nowadays, high performance concrete is used more frequently because of the many advantages compared to traditional concrete. The higher mechanical properties (e.g., compressive strength, flexural strength, and Young’s ... -
A comparison of spectral values obtained in bridge structures via radar interferometry and numerical calculations
(EDP Sciences, 2017-05-24)Radar interferometry measurements were used to determine the dynamic response of two bridges. The dynamic excitation was performed via trucks crossing the road bumps placed upon each structure. From the relevant records ... -
Complex multilevel fracture tests of concrete: basic mechanical fracture parameters of standard size specimens.
(EDP Sciences, 2020-10-05)The aim of the current research is to develop a complex multilevel approach for experimental–computational determination of mechanical fracture parameters of concrete as a typical quasi-brittle material. This includes ... -
Components of the Fracture Response of Alkali-Activated Slag Composites with Steel Microfibers
(MDPI, 2019-05-16)Knowledge of the mechanical and primarily fracture parameters of composites with a brittle matrix is essential for the quantification of their resistance to crack initiation and growth, and also for the specification of ... -
Crack propagation in a brittle DCB specimen assessed by means of the Williams’ power expansion
(Gruppo Italiano Frattura, 2019-04-01)A double cantilever beam geometry has been chosen in order to investigate the importance of the higher-order terms of the Williams’ power expansion for the crack path estimation. The crack propagation has been tested ... -
Decision Making Methods and Applications in Civil Engineering
(Hindawi, 2015-08-28)Articles published in this special issue prove that useful information for making construction related decisions can be obtained by methods which do not belong to a formal DM, for instance, sensitivity analysis, stochastic ... -
Determining fracture energy parameters of concrete from the modified compact tension test
(Gruppo Italiano Frattura, 2014-09-01)The modified compact tension (MCT) test, though not yet recognized as a valid test for determining fracture energy of concrete, is believed to represent a plausible and suitable alternative versus other well established ... -
Development of shrinkage and fracture parameters in selected fine-grained cement-based composites
(EDP Sciences – Web of Conferences, 2017-05-24)The paper summarizes results of a pilot study aimed at the evaluation of an experimental investigation focused on determination of the material characteristics development of selected fine-grained cement-based composites ... -
Dynamics of Collapse of a High Building
(David Publishing, 2012-06-25)This paper is a contribution to the discussion about the fall of the New York World Trade Center (WTC) towers in 2001. The differential equation of the collapse of a high building is derived by taking into account many ... -
Effect of curing environment on length changes of alkali-activated slag/cement kiln by-pass dust mixtures
(IOP Publishing, 2019-08-14)This paper investigates the combination of commonly used blast furnace slag (BFS) and quite non-traditional cement kiln by-pass dust (BD) for the preparation of alkali-activated binder. More specifically, the possibilities ... -
Effect of steel fibres dosage in alkali-activated slag mortars on acoustic emission obtained during three-point bending tests
(EDP Sciences – Web of Conferences, 2017-05-24)The acoustic emission phenomenon is directly associated with nucleation of cracks in structural materials during loading. This paper analyses acoustic emission signals captured during three-point bending fracture tests of ... -
Elastic Lateral-Torsional Buckling of Simply Supported Hot-Rolled Steel I-Beams with Random Imperfections
(2013-05-16)The paper deals with the problem of lateral beam buckling of simply supported hot-rolled I-beams under major axis bending. The bending stability problem is analysed by consideration the minor axis bending and torsion ... -
Estimation of the crack propagation direction in a mixed-mode geometry via multi-parameter fracture criteria
(Gruppo Italiano Frattura, 2015-08-15)The presented work introduces a numerical parametric study on the crack propagation direction under mixed-mode conditions (mode I + II). It is conducted for the geometry of an eccentric asymmetric four-point bending of a ... -
Evaluation of fracture response of Silesian granite specimens via Effective Crack Model Approach and finite element analysis
(Elsevier, 2020-02-19)The paper is focused on the advanced evaluation of fracture tests of selected rock specimens. Assessment of fracture response of chevron notch cylindrical specimens of Silesian granite subjected to three-point bending test ...