Abstract
To explore the damage progression of meso concrete materials under diverse stress conditions, simulations of different specimens subjected to various loading scenarios were conducted using ANSYS software. Concrete’s uniaxial stress–strain relationship was modeled based on the principle of minimum energy dissipation, expressed as a function incorporating a damage variable. This function allows for the determination of the strength characteristics under both uniaxial tension and compression. Decay of the elastic modulus throughout the damage process was simulated using a bifold damage evolution model, and an incremental approach was employed to calculate the damage area of the concrete. To further explore the relationship between damage area and stress state, energy considerations were introduced, assuming the concrete’s damage progression follows a linear elastic model. The results indicate that the specimen’s stress state has a significant impact on both the damage area and strength. Additionally, crack initiation and propagation occurred in a systematic manner, with cracks clearly forming around the aggregate, the failure area of specimens varies with different stress state.
Published Version
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