Dynamic damage evolution of solids in compression: Microcracking, plastic flow, and brittle-ductile transition

Journal Article · Fri Jul 01 00:00:00 EDT 1994 · Journal of Engineering Materials and Technology; (United States)

DOI:https://doi.org/10.1115/1.2904289· OSTI ID:6989292

Deng, H; Nemat-Nasser, S ^[1]

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1. Univ. of California, San Diego, La Jolla, CA (United States). Center of Excellence for Advanced Materials

Dynamic compressive damage evolution in solids, associated with brittle microcracking and ductile plastic flow, is modeled through plastic flow and tensile microcracking, which are induced by the deformation of preexisting microflaws at grain boundaries, slip bands, and microcavities. The micromechanical aspect of this model is discussed in terms of the dominance of microcracking or plastic flow, and possible transition from microcracking to plastic flow is investigated. The effect of lateral confinement on the dynamic damage evolution is investigated, emphasizing the brittle-ductile transition.

• OSTI ID: 6989292
• Journal Information: Journal of Engineering Materials and Technology; (United States), Vol. 116:3; ISSN 0094-4289
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
MATERIALS
BRITTLE-DUCTILE TRANSITIONS
DAMAGE
COMPRESSION STRENGTH
CRACK PROPAGATION
MATHEMATICAL MODELS
PLASTICITY
TENSILE PROPERTIES
MECHANICAL PROPERTIES
360103* - Metals & Alloys- Mechanical Properties
360203 - Ceramics
Cermets
& Refractories- Mechanical Properties
360603 - Materials- Properties