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Distortion Strain Energy–Based Mohr-Coulomb Criterion for Concrete Failure
On the basis of comprehensive analysis of experimental phenomenon and micro/mesomechanism, it is found that concrete failure is controlled by normal stress on failure plane and distortion strain energy (DSE) of the concrete block. These factors are combined to develop a DSE-based Mohr-Coulomb (M-C) criterion for concrete failure, and the DSE-based M-C criterion is extended by considering the effect of normal stress on friction coefficient. The DSE-based M-C criterion can predict the failure of normal-strength concrete (NSC), high-strength concrete (HSC), and air-entrained concrete (AEC) under different loading conditions with high accuracy. The DSE-based M-C criterion is also applied to construct the failure locus of lightweight aggregate concrete (LAC). On the basis of the failure locus and experimental results of LAC, a cutoff is observed from the experimental results of LAC. Although the DSE-based M-C criterion cannot manifest the cutoff, good agreements are observed between the failure locus and experimental results when the experimental values are greater than the cutoff. Through average error (AE) analyses, it can be found that the DSE based M-C criterion has a minimum AE when compared with the Willam-Warnke criterion, He-Song criterion, and Songs criterion.
Distortion Strain Energy–Based Mohr-Coulomb Criterion for Concrete Failure
On the basis of comprehensive analysis of experimental phenomenon and micro/mesomechanism, it is found that concrete failure is controlled by normal stress on failure plane and distortion strain energy (DSE) of the concrete block. These factors are combined to develop a DSE-based Mohr-Coulomb (M-C) criterion for concrete failure, and the DSE-based M-C criterion is extended by considering the effect of normal stress on friction coefficient. The DSE-based M-C criterion can predict the failure of normal-strength concrete (NSC), high-strength concrete (HSC), and air-entrained concrete (AEC) under different loading conditions with high accuracy. The DSE-based M-C criterion is also applied to construct the failure locus of lightweight aggregate concrete (LAC). On the basis of the failure locus and experimental results of LAC, a cutoff is observed from the experimental results of LAC. Although the DSE-based M-C criterion cannot manifest the cutoff, good agreements are observed between the failure locus and experimental results when the experimental values are greater than the cutoff. Through average error (AE) analyses, it can be found that the DSE based M-C criterion has a minimum AE when compared with the Willam-Warnke criterion, He-Song criterion, and Songs criterion.
Distortion Strain Energy–Based Mohr-Coulomb Criterion for Concrete Failure
Liu, Xiaoyu (author) / Yang, Zheng (author)
2017-04-20
Article (Journal)
Electronic Resource
Unknown
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