TITLE

On the strain rate limits in dynamic testing of concrete-like heterogeneous materials

AUTHOR(S)
Lu, Y.; Song, Z. H.
PUB. DATE
May 2012
SOURCE
EPJ Web of Conferences;2012, Issue 26, Special section p1
SOURCE TYPE
Conference Proceeding
DOC. TYPE
Article
ABSTRACT
The bulk dynamic behaviour of concrete in generally known to be strain rate dependent. However, explanation of the underlying mechanisms has been a subject of debate in the research community. Among other factors, the extent of validity of existing experimental data for concrete-like materials in the high strain rate regime is believed to have further complicated the situation. This paper is concerned about the strain rate limits for dynamic testing of concrete specimens in association with the size requirement for representation of the composite material. The strain rate limits as may be established by elastic theories are discussed firstly. Representative simulation results from numerical experiments using a mesoscale model are then described, and non-uniform distributions of stress and damage under excessively high strain rates are highlighted, and this leads to discussion on the correlation between the externally measured data and the real responses within the sample material. Both dynamic compression and dynamic splitting tension are considered.
ACCESSION #
85673226

 

Related Articles

  • Probabilistic estimation of the constitutive parameters of polymers. Foley, J. R.; Jordan, J. L.; Siviour, C. R. // EPJ Web of Conferences;2012, Issue 26, Special section p1 

    The Mulliken-Boyce constitutive model predicts the dynamic response of crystalline polymers as a function of strain rate and temperature. This paper describes the Mulliken-Boyce model-based estimation of the constitutive parameters in a Bayesian probabilistic framework. Experimental data from...

  • Research of stress and strain state of concrete high hollow vibro-pressed masonry. Sokolov, B. S.; Fatkhullin, L. R. // Vestnik Volgogradskogo Gosudarstvennogo Arhitekturno-Stroitelnog;2013 Part 2, Vol. 31 Issue 50, p399 

    Suggested is the condition for a new calculation methodology of masonry construction made of concrete high hollow masonry produced according to vibro-pressing technology that reflects the mechanism of concrete destruction under compression based on the theory of resistance of anisotropic...

  • Dynamic indentation on layered polypropylene foams. Maheo, L.; Viot, P. // EPJ Web of Conferences;2012, Issue 26, Special section p1 

    Foams, and particularly the polypropylene foam, are more and more often used in the area of injury protection and passive safety for its energy absorption capacity. This multi-scale material is constituted of mesoscopic beads with a large variability of the material properties. First, to study...

  • Multiaxial Fatigue Life Prediction for Steels Based on Some Simple Approximations. Li, Jing; Yao, Zhi-feng; Zhang, Zhong-ping // Journal of Materials Engineering & Performance;Jan2015, Vol. 24 Issue 1, p185 

    The Roessle-Fatemi's hardness method (HM) and Muralidharan-Manson's modified universal slopes method (MUSM) were employed to determine the uniaxial fatigue properties of steels from easily obtained tensile properties. Both methods give good life predictions, while the Roessle-Fatemi's HM is...

  • Low Cycle Fatigue Life Prediction Using Unified Mechanics Theory in Ti-6Al-4V Alloys. Bin Jamal M, Noushad; Kumar, Aman; Lakshmana Rao, Chebolu; Basaran, Cemal // Entropy;Jan2020, Vol. 22 Issue 1, p24 

    Fatigue in any material is a result of continuous irreversible degradation process. Traditionally, fatigue life is predicted by extrapolating experimentally curve fitted empirical models. In the current study, unified mechanics theory is used to predict life of Ti-6Al-4V under monotonic tensile,...

  • A mathematical model for the accumulation of fatigue in bars subjected to lateral vibrations. Cardei, Petru; Sfiru, Raluca; Muraru, Vergil // International Conference on Thermal Equipment, Renewable Energy ;2019, Vol. 112, p1 

    The article presents a mathematical model for the phenomenon of fatigue accumulation in the slender bar subjected to lateral bending. The model is based on the Euler-Bernoulli type bar, a bi-linear elastic-plastic model and, for simulation of fatigue, a system of equations describing the...

  • Chloride Ion Erosion in Concrete under Sustained Axial Pressure. Zongming Yang; Weihong Li; Yihan Wang // Key Engineering Materials;2016, Vol. 680, p402 

    Reinforcement corrosion is one of the leading factors influencing the durability of concrete structure. Erosion of chloride ions on the concrete structure is influenced by many factors. This article carried on an experimental study on the rules of chloride ion penetration under the sustained...

  • Improving machining accuracy of electrochemical machining blade by optimization of cathode feeding directions. Qu, N. S.; Xu, Z. Y. // International Journal of Advanced Manufacturing Technology;Sep2013, Vol. 68 Issue 5-8, p1565 

    Electrochemical machining (ECM) is well-established in certain areas, such as the aerospace, defence, and medical industries for machining complex parts. ECM is an effective way to produce compression blades. However, with advances in the development of aero engines, the accuracy of blades...

  • Analysis of Thermal Effect on Elastohydrodynamic Lubrication in Angular Contact Ball Bearing. Baoming Wang; Xialun Yun; Xingyao Liao; Xuesong Mei // Applied Mechanics & Materials;2014, Vol. 741, p443 

    Based on the theory of point contact thermal elastohydrodynamic lubrication(EHL), the mathematical models for the thermal EHL of high-speed angular contact ball bearing are established. Multi- grid method and multigrid integration method are respectively used to calculate out the film pressure...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics