Numerical study of crack initiation from a notch in a Brazilian disk under compression
Source abstract
Abstract
This study presents a numerical simulation using ANSYS APDL to analyze mixed-mode (I+II) crack propagation in a brittle material (PMMA) using the Brazilian disk test, examining the critical influence of notch radius (0.5 to 6 mm) and loading orientation on structural resistance. Based on linear elastic fracture mechanics and the local two-parameter K-T approach, the results demonstrate that notch geometry and material type directly modulate specimen lifetime. The application of the volumetric method (based on effective distance and effective stress) enables the precise determination of crack initiation. The results particularly highlight the major role of the T-stress constraint parameter on the stress intensity factor, emphasizing that mastering these variables is fundamental for safety and design in aerospace and energy sectors, where mixed-mode fracture remains an open and strategic research domain.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Fatigue and fracture mechanics · Numerical methods in engineering · Mechanical Behavior of Composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (25)
Show source-provided references
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