Work

Mechanical interpretation and generalization of the modified Mohr–Coulomb model for ductile fracture prediction

Year: 2025

Type: article

Abstract: Objectives This work aims to revisit the physical interpretation of the Modified Mohr–Coulomb (MMC) model for ductile fracture prediction. Methods The MMC model is analyzed from a mechanical perspective by decomposing its terms into the contributions of hydrostatic stress, maximum shear stress, and deformation mode. Results It is shown that the MMC model characterizes the combined effects of stress triaxiality and Lode parameter on damage evolution, and a generalized fracture criterion with physically motivated weighting functions is proposed. Conclusion The clarified interpretation and generalized formulation provide a physically transparent framework for ductile fracture prediction in metal forming processes.

Source: Composite Design and Manufacturing

DOI: 10.1093/cdm/wqaf013

Authors: Jiawen Yu, Xiaoguang Fan, Yi Yao, Zhijun Wang, Mei Zhan

Institutions: Northwestern Polytechnical University, State Key Laboratory of Solidification Processing

Language: English

Topic: Metal Forming Simulation Techniques

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funders: National Natural Science Foundation of China, Shanghai Jiao Tong University

Awards: G4482763400, G6796752693