Modeling of Dislocation : Grain Boundary Interactions in Gradient Crystal Plasticity Theories

• Tác giả: Hannes Erdle
• Ngôn ngữ: eng
• ISBN-13: 978-3731511960
• Thông tin xuất bản: Karlsruhe : KIT Scientific Publishing, 2022
• Mô tả vật lý: 1 electronic resource (186 p.)
• Bộ sưu tập: Tài liệu truy cập mở
• ID: 270101
• Chủ đề: 1. Erweiterte Kontinuumstheorie; 2. Gradienten-Kristallplastizität; 3. Kontinuumsversetzungstheorie; 4. Korngrenzmodellierung; 5. Mechanical engineering & materials

Tóm tắt

A physically-based dislocation theory of plasticity is derived within an extended continuum mechanical context. Thermodynamically consistent flow rules at the grain boundaries are derived. With an analytical solution of a three-phase periodic laminate, dislocation pile-up at grain boundaries and dislocation transmission through the grain boundaries are investigated. For the finite element implementations, numerically efficient approaches are introduced based on accumulated field variables.