Research on Several Fracture Forms and Controlling Parameters of Ductile Materials

Zhi Hui Li; Jun Ping Shi; An Min Tang

doi:10.4028/www.scientific.net/AMR.374-377.770

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Comprehensive Evaluation for Tao Huaxi Ecological Water System Project in Lanzhou
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Study on Discharge and Diffusion of Raised Dust during Subgrade Construction in the Yellow River Flood Area
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Analysis of Damping Characteristics for Sandwich Beams with a Polyurea Viscoelastic Layer
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Research on Several Fracture Forms and Controlling Parameters of Ductile Materials
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Study on the Structural Properties of Steel Reinforced CRC Beam-Cracking Resistance
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Studies on the Carbonation Restraint Capability of Dam Concrete with High Fly Ash Content
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Utilization of Phosphogypsum as Raw Material for Manufacturing of Non-Fired Load-Bearing Wall Bricks
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Research on Coal Gangue Being Backfill Material in Taiyuan Region
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 374-377Research on Several Fracture Forms and Controlling...

Research on Several Fracture Forms and Controlling Parameters of Ductile Materials

Abstract:

The experimental procedures of mixed mode fracture of several ductile materials are investigated. The position and direction of crack initiation are determined according to a new method. The variations of fracture caused by different physical mechanisms are analyzed. Through studying the changing regularity of different fracture mechanisms, it is believed that the main ways of the fracture in ductile materials can be divided into three groups. They are traction fracture and two different types of shear fracture. Void nucleation, expansion and coalescing are the dominant mechanism of traction fracture. The formation and development of localized shear bands are the dominant mechanism of the two different types of shear fracture. Localized large plastic deformation will cause damage within the material. The fundamental factor, which causes the occurrence of fracture in the material, is a certain stress parameter at the dangerous point has reached the critical fracture value of the material. Based on those phenomena listed above, several fracture controlling parameters for different fracture forms have been discussed, and several new parameters, which affect various fracture forms, have been proposed.