scholarly journals Experimental determination of GFRC tensile parameters from three-point bending tests using an analytical damage model

2019 ◽  
Vol 223 ◽  
pp. 477-490 ◽  
Author(s):  
Marwa Loukil ◽  
Wiem Ben Hassine ◽  
Oualid Limam ◽  
Panagiotis Kotronis
Keyword(s):  
Experimental Determination ◽  
Damage Model ◽  
Bending Tests ◽  
Three Point Bending

Fracture Toughness and Cracking Behaviour of SCC Compared to VC

2013 ◽  
Vol 577-578 ◽  
pp. 205-208
Author(s):  
Sara Korte ◽  
Veerle Boel ◽  
Wouter de Corte ◽  
Geert de Schutter
Keyword(s):  
Fracture Toughness ◽  
Fracture Process ◽  
Critical Value ◽  
Fracture Parameter ◽  
Self Compacting Concrete ◽  
Bending Tests ◽  
Three Point Bending ◽  
Notched Specimens ◽  
Subsequent Determination

Vibrated concrete (VC) and self-compacting concrete (SCC) have a substantially different composition, resulting in dissimilar mechanical properties regarding cracking behaviour. The critical value of the mode I stress-intensity factor KICis an appropriate fracture parameter for evaluating fracture toughness and can be obtained from three-point bending tests (3PBT) on small, notched specimens. Subsequent determination of the energy release rate thus allows to examine the crack propagation and fracture process of both concrete types. This paper describes the results of such 3PBTs on samples, made from VC and SCC. Evaluation of the cracking behaviour, derived from these results, reveals remarkable differences.

scholarly journals Numerical and Experimental Determination of Cut-edge after Blanking of Thin Steel Sheet of DP1000 within Use of Stress based Damage Model

2014 ◽  
Vol 81 ◽  
pp. 1096-1101 ◽  
Author(s):  
Bernd-Arno Behrens ◽  
Anas Bouguecha ◽  
Milan Vucetic ◽  
Richard Krimm ◽  
Tobias Hasselbusch ◽  
...  
Keyword(s):  
Experimental Determination ◽  
Steel Sheet ◽  
Damage Model ◽  
Cut Edge ◽  
Thin Steel Sheet ◽  
Thin Steel

Flexural Properties of Polyamides: Influence of Strain Rate, Friction and Moulding-Induced Anisotropy

2014 ◽  
Vol 601 ◽  
pp. 29-32
Author(s):  
Dan Andrei Serban ◽  
Tudor Voiconi ◽  
Liviu Marsavina ◽  
Vadim V. Silberschmidt
Keyword(s):  
Mechanical Properties ◽  
Strain Rate ◽  
Tensile Tests ◽  
Flexural Properties ◽  
Induced Anisotropy ◽  
Flexural Behaviour ◽  
Bending Tests ◽  
Three Point Bending ◽  
Cooling Conditions

In recent years, advances in material testing equipment caused the determination of mechanical properties by means of three-point bending tests to lose ground in detriment to more accurate tensile tests. However, if components undergo bending deformation in service, the identification of the materials flexural behaviour is essential. The investigated material is a thermoplastic polymer, test specimens being cut in prismatic shapes from injected sheets, which present a variation in properties due to cooling conditions. This paper presents results of three-point bending tests with emphasis on the influence of strain rate and anisotropy on flexural strength and chord modulus. Results show an increase in flexural properties with strain rate and a considerable influence of anisotropy on mechanical properties.

An Improved Procedure for the Determination of the Elastic Constants of Component-Lead-Board Assemblies

1991 ◽  
Vol 113 (4) ◽  
pp. 427-430 ◽  
Author(s):  
T. S. Chang ◽  
Edward B. Magrab
Keyword(s):  
Elastic Constants ◽  
Orthotropic Plate ◽  
Torsion Test ◽  
Least Square ◽  
Bending Test ◽  
Beam Model ◽  
Bending Tests ◽  
Three Point Bending ◽  
Least Square Procedure

An improved means of obtaining the elastic constants of component-lead-board assemblages from two three-point bending tests and one four-point torsion test is proposed. The suggested method models the three-point bending test as an orthotropic plate and uses the experimentally obtained bending and torsion results in a standard nonlinear least square procedure to determine the rigidities in the x and y directions and the Poisson’s ratios directly. Numerical simulation of the method indicates that the beam model overestimates the elastic modulii by 4 to 7 percent and the corresponding rigidities by 7 to 13 percent.

Computational and experimental determination of the parameters of the Cowper — Symonds hardening materials model for metal beams

2021 ◽  
Author(s):  
A.V. Shmelev ◽  
A.V. Amialiusik ◽  
V.I. Ivchenko ◽  
S.V. Hitrikov
Keyword(s):  
Experimental Determination ◽  
Material Model ◽  
Residual Deflection ◽  
Three Point Bending ◽  
Passenger Vehicles ◽  
The Difference ◽  
Scale Experiment ◽  
Experimental Values ◽  
Steel 20

The study introduces a method for the computational and experimental determination of the parameters of the Cowper — Symonds material model for steel beam structures under shock loads, the method being based on the finite element method. A full-scale experiment was carried out on a developed and manufactured installation that implements dynamic shock loading of metal beams according to the three-point bending scheme. The results of the practical approbation of the proposed method are presented on the example of determining the parameters of the Cowper — Symonds model for beams of steel 20. The difference between the calculated and experimental values of the residual deflection of the beam did not exceed 5%. Computer simulation of the experiment was carried out in the ANSYS LS-DYNA software package. The above methodological approaches are proposed to be used in the calculated assessment of the strength of the power structure of passenger vehicles for compliance with the requirements of UN Regulation No. 66.

Experimental determination of a state equation for dissipative granular gases

1999 ◽  
Vol 96 (6) ◽  
pp. 1111-1116 ◽  
Author(s):  
E. Falcon ◽  
S. Fauve ◽  
C. Laroche
Keyword(s):  
Experimental Determination ◽  
State Equation ◽  
Granular Gases
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