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Strain Gradient Plasticity-Based Modeling of Damage and Fracture

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Strain Gradient Plasticity-Based Modeling of Damage and Fracture/ by Emilio Martínez Pañeda.
作者:	Martínez Pañeda, Emilio.
面頁冊數:	XVII, 159 p. 66 illus., 47 illus. in color.online resource. :
Contained By:	Springer Nature eBook
標題:	Mechanics. -
電子資源:	https://doi.org/10.1007/978-3-319-63384-8
ISBN:	9783319633848

Strain Gradient Plasticity-Based Modeling of Damage and Fracture
Martínez Pañeda, Emilio.

Strain Gradient Plasticity-Based Modeling of Damage and Fracture[electronic resource] /by Emilio Martínez Pañeda. - 1st ed. 2018. - XVII, 159 p. 66 illus., 47 illus. in color.online resource. - Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5053. - Springer Theses, Recognizing Outstanding Ph.D. Research,.

Part.-Introduction -- Numerical framework -- Gradient plasticity formulations -- Numerical implementation -- Part ii -- Results -- Mechanism based crack tip characterization -- On fracture infinite strain gradient plasticity -- The role of energetic and dissipative length parameters -- Hydrogen diffusion towards the fracture process zone -- SGP-Based modelling of heac -- Conclusions.-Bibliography.

This book provides a comprehensive introduction to numerical modeling of size effects in metal plasticity. The main classes of strain gradient plasticity formulations are described and efficiently implemented in the context of the finite element method. A robust numerical framework is presented and employed to investigate the role of strain gradients on structural integrity assessment. The results obtained reveal the need of incorporating the influence on geometrically necessary dislocations in the modeling of various damage mechanisms. Large gradients of plastic strain increase dislocation density, promoting strain hardening and elevating crack tip stresses. This stress elevation is quantified under both infinitesimal and finite deformation theories, rationalizing the experimental observation of cleavage fracture in the presence of significant plastic flow. Gradient-enhanced modeling of crack growth resistance, hydrogen diffusion and environmentally assisted cracking highlighted the relevance of an appropriate characterization of the mechanical response at the small scales involved in crack tip deformation. Particularly promising predictions are attained in the field of hydrogen embrittlement. The research has been conducted at the Universities of Cambridge, Oviedo, Luxembourg, and the Technical University of Denmark, in a collaborative effort to understand, model and optimize the mechanical response of engineering materials. .

ISBN: 9783319633848

Standard No.: 10.1007/978-3-319-63384-8doiSubjects--Topical Terms:

527684
Mechanics.

LC Class. No.: TA349-359

Dewey Class. No.: 531

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