Single-crystal gradient plasticity with an accumulated plastic slip: Theory and applications

• Tác giả: Eric Bayerschen
• Ngôn ngữ: eng
• ISBN-13: 978-3731506065
• Thông tin xuất bản: Karlsruhe : KIT Scientific Publishing, 2017
• Mô tả vật lý: 1 electronic resource (XII, 250 p. p.)
• Bộ sưu tập: Tài liệu truy cập mở
• ID: 227451

Tóm tắt

In experiments on metallic microwires, size effects occur as a result of the interaction of dislocations with, e.g., grain boundaries. In continuum theories this behavior can be approximated using gradient plasticity. A numerically efficient geometrically linear gradient plasticity theory is developed considering the grain boundaries and implemented with finite elements. Simulations are performed for several metals in comparison to experiments and discrete dislocation dynamics simulations.