Surface-to-Surface 접촉 모델을 적용한 콘크리트 쪼갬인장강도 시험 모델링

초록

A numerical study was conducted to assess the suitability of a surface-to-surface contact model for modeling a concrete material test. Three splitting tensile strength tests were simulated using the commercial finite element analysis program ABAQUS, where its surface-to-surface model was applied to the interaction between the loading plate and the concrete cylinder. Initially, flat-flat and flat-circle contact tests were performed in a 3D environment to confirm the functionality of the surface-to-surface contact model. Then, a 3D finite element analysis of a splitting tensile strength test was performed using 2 mm-sized elements. However, reducing the element size led to a significant increase in analysis time. Consequently, subsequent analyses were conducted using a 0.5 mm element size with a 2D finite element model. With this approach, as the element size decreased, the numerical results closely aligned with the experimental splitting strengths, confirming the effectiveness of the proposed modeling approach.

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