Peak Load Response of a Concrete Beam in Mixed-Mode Fracture

Xiang Guo; Ray K.L. Su; Ben Young

doi:10.4028/www.scientific.net/AMM.853.272

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 853Peak Load Response of a Concrete Beam in...

Peak Load Response of a Concrete Beam in Mixed-Mode Fracture

Abstract:

A major difficulty in simulating load response of a concrete structure in mixed-mode fracture lies in the fact that crack path is not known a priori. Predicting both the crack path and the associated load response involves advanced simulation techniques and novel numerical methodologies. Here, an intrinsic cohesive crack model is employed to study mixed-mode fracture in a concrete beam. The present approach requires neither preliminary results from linear elastic fracture mechanics simulations nor a re-meshing procedure or special implementation to prevent crack locking. Simulations with regular meshes illustrate that this concise approach can provide a reasonable estimation of peak load of the pre-cracked concrete beams in mixed-mode fracture. This study shows that the energy ratio in the bilinear softening law has larger effects than the stress ratio.

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Periodical:

Applied Mechanics and Materials (Volume 853)

Pages:

272-275

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.853.272

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Online since:

September 2016

Authors:

Xiang Guo*, Ray K.L. Su, Ben Young

Keywords:

Cohesive Crack Model, Mixed-Mode Fracture, Peak Load

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References

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