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发表时间：2022-10-06

发表刊物：计算力学学报

所属单位：建设工程学部

卷号：26

期号：2

页面范围：172-179

ISSN号：1007-4708

摘要：On the basis of the principle of thermal conduct equation and the
   coupling of thermo-mechanical concept, and considering the
   characteristic of damage evolution law at mesoscopic level of brittle
   materials, we proposed a numerical model to simulate the coupling of
   thermo-mechanical behaviour and the damage evolution. For the remarkable
   feature of concrete-like materials, I. E. Nonhomogeneity at mesoscopic,
   statistical method is employed to describe the relationship of
   mechanical response between mesoscopic level and macroscope level. It
   indicates that the temperature distribution and stresses fields are
   remarkably influenced by the heterogeneous of materials. The numerically
   simulated results are verified by the theoretical and experimental data.
   The comparison of the failure processes at steady state and transient
   state thermal conduction of the same sample indicate that the failure
   zone of steady state thermal conduction is large than that of transient
   state. The results reveal that the thermal cracking by considering the
   transient thermal conduction is more precise and reliable than that of
   steady state.

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