Work

A new uncoupled ductile fracture model considering the transition of fracture mechanism

Year: 2025

Type: article

Abstract: As stress triaxiality increases, the dominant ductile fracture mechanism transitions from shear-dominated behavior to void spherical expansion and necking coalescence. To consider this phenomenon, a new uncoupled ductile fracture model based on the micromechanisms of void nucleation, growth, and coalescence is proposed. The model adopts a piecewise function modeling strategy to account for the transition of fracture mechanism. Through a detailed analysis of the model variables, the physical significance of each parameter are clarified. Moreover, six different materials and two classic fracture models are used for verification of the prediction accuracy of the model, highlighting its advantages and material applicability.

Source: Engineering Fracture Mechanics

DOI: 10.1016/j.engfracmech.2025.111045

Authors: Yuze Song, Yuhao Guo, Yun Teng, Gang Liu

Institution: Dalian University of Technology

Language: English

Topic: Metal Forming Simulation Techniques

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,120

Funder: National Natural Science Foundation of China