Λεπτομέρειες βιβλιογραφικής εγγραφής
| Τίτλος: |
Open-source C++ user subroutines for extensible and robust cohesive-zone-model fracture analysis in Abaqus. |
| Συγγραφείς: |
Lu, Xin1 (AUTHOR) xinlu@g.ecc.u-tokyo.ac.jp, Higuchi, Ryo1 (AUTHOR), Yokozeki, Tomohiro1 (AUTHOR) |
| Πηγή: |
Advances in Engineering Software (1992). May2026, Vol. 216, pN.PAG-N.PAG. 1p. |
| Θεματικοί όροι: |
*Subroutines (Computer programs), *C++, *Fracture mechanics, *Open source software, *Finite element method |
| Περίληψη: |
We introduce open-source C++ subroutines — implemented as user element (UEL) and user material (UMAT) in Abaqus finite element (FE) software — for fracture analysis based on the cohesive zone model. Implemented in an object-oriented, modular architecture, the proposed framework leverages modern C++ features to enhance extensibility and functionality for general FE simulations. The Abaqus built-in cohesive element is susceptible to numerical instability; we introduce pragmatic modifications to the standard formulation — a total-secant scheme, strength retrieval, and brittle-failure enforcement — to improve numerical robustness and mitigate potential convergence issues. Model development, implementation details, and source code (https://github.com/dpluxin) are provided, together with guidance for integrating additional interfaces and third-party libraries. Validation against benchmark studies, including double cantilever beam (DCB), end-notched flexure (ENF), and mixed-mode bending (MMB) tests, demonstrates the accuracy and robustness of the presented scheme. • Open-source C++ subroutines for Abaqus: modular, object-oriented CZM implementation. • Extensible architecture for easy addition of new element types, material models, and third-party libraries. • Total-secant Newton–Raphson with failure-onset strategies for enhanced numerical robustness. • Validated by benchmark fracture tests—improved initiation/propagation predictions and FE stability. [ABSTRACT FROM AUTHOR] |
| Βάση Δεδομένων: |
Academic Search Index |