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Coupled Thermo-Mechanical Peridynamics Simulation for Analyzing Failure of ECC Under High-Temperature Loads

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Coupled Thermo-Mechanical Peridynamics Simulation for Analyzing Failure of ECC Under High-Temperature Loads
In this paper,the degradation of mechanical properties of engineering cementitious composites(ECCs)at elevated temperatures and the failure of fiber are considered.A failure model under coupled thermo-mechanical loads for ECC is developed based on bond-based peridynamics.A semi-discrete model is constructed to describe fiber-matrix interactions and simulate thermal failure in ECC.The peridynamic differential operator(PDDO)is utilized for non-local modeling of thermal fluid flow and heat transfer.A multi-rate explicit time integration method is adopted to address thermo-mechanical coupling over different time scales.Model validation is achieved through simulating transient heat transfer in a homogeneous plate,with results aligning with analytical solutions.The damage behavior of a heated ECC plate in a borehole and under a fire scenario is analyzed,providing insights for enhancing fire resistance and high-temperature performance of ECC materials and structures.

Bond-based peridynamicsEngineering cementitious compositesPeridynamic differential operatorThermo-mechanical couplingMaterial damage

Xihong Zhang、Keyan Li、Jiyu Tang、Zhanqi Cheng

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School of Civil Engineering,Zhengzhou University,Zhengzhou 450001,China

Yellow River Lab,Zhengzhou University,Zhengzhou 450001,China

Bond-based peridynamics Engineering cementitious composites Peridynamic differential operator Thermo-mechanical coupling Material damage

2024

10.1007/s10338-024-00502-7

固体力学学报(英文版)
中国力学学会

固体力学学报(英文版)

EI
影响因子：0.214
ISSN：0894-9166
年,卷(期)：2024.37(6)