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논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2013.12
- 수록면
- 1,399 - 1,404 (6page)
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초록· 키워드
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The peridynamics theory of solid mechanics has been proposed as a suitable framework for material failure and damage simulation. As a nonlocal model, based upon integro-differential equations, peridynamics is computationally expensive. Concurrent multiscale methods are thus of interest for efficient and accurate implementations of peridynamics. In this method, peridynamic models are restricted to regions where discontinuities are present, while employing classical local models in domains characterized by smooth displacements. We derive a blending scheme to concurrently couple bond-based peridynamic models and the Navier equation of classical elasticity. We demonstrate analytically and numerically that the blended model does not exhibit ghost forces and is also patch-test consistent. Numerical results for point loads and static fracture demonstrate the accuracy and efficiency of the blended model proposed, suggesting an alternative framework for cases where peridynamic models are too expensive, while classical local models are not accurate enough.
목차
Abstract
1. 서론
2. 페리다이나믹 이론
3. 블랜딩 기반 페리다이나믹-탄성체 모델 연성
4. 이산화된 2차원 모델 방정식
5. 수치예제
6. 결론
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