Numerical quantification of factors influencing high-speed impact tests of concrete material
MetadataShow full item record
It is commonly agreed that a few factors associated with stress wave propagation will affect the obtained dynamic properties of concrete material from impact tests. Owing to the nature of dynamic loadings, especially those with high loading rates, it is very unlikely to neither completely eliminate these influences in physical testing nor quantify these influences from the laboratory testing data. This chapter presents progressive numerical studies that devote to quantifying the influences of various factors in impact tests on dynamic concrete material properties at high strain rates, in particular the lateral inertia and end friction confinement effect. Both the lateral inertia confinement and end friction are found to contribute to the Dynamic Increase Factor (DIF), and the contribution is strain rate and specimen size dependent. A method to remove these influences from the test data is proposed. Using mesoscale model, the influence of granite aggregates on concrete compressive strength at high strain rates is also examined.
Showing items related by title, author, creator and subject.
Numerical Evaluation of the Influence of Aggregates on Concrete Compressive Strength at High Strain RateHao, Y.; Hao, Hong (2011)The dynamic strength of concrete materials is usually obtained by conducting laboratory tests such as drop-weight test or split Hopkinson pressure bar (SHPB) test. It is widely accepted that the uniaxial compressive ...
Hao, Yifei; Hao, Hong; Li, Z. (2013)The compressive strength of concrete material increases with the strain rate. The dynamic compressive strength of concrete material is usually obtained by conducting laboratory tests such as split Hopkinson pressure bar ...
Hao, Y.; Hao, Hong (2016)Dynamic tensile strength is one of the key factors of concrete material that needs to be accurately defined in analysis of concrete structures subjected to high-rate loadings such as blast and impact. It is commonly agreed ...