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Forming limit prediction of advanced high-strength steels (AHSS) using an enhanced ductile damage model

Year: 2025

Type: article

Abstract: This paper presents prediction of forming limits of Advanced High-Strength Steels (AHSS) DP980 by adopting an enhanced ductile damage model to consider sheet metal anisotropy. The micro-void growth-based original damage model is transformed from principal stress space (σ1, σ2, σ3) into the equivalent stress, Lode parameter, and stress triaxiality space (σe, Lp, η). The proposed ductile fracture prediction model is then implemented and integrated with a finite element (FE) software package to conduct the deep drawing numerical simulations. The Nakajima-type specimens are adopted to predict the limiting principal plastic strains ranging from uniaxial tensile through plane-strain to biaxial tensile loading states. The forming limit diagram (FLD) of DP980 steel is established in accordance with the ISO 12004-2-2008 standard.

Source: Vietnam Journal of Mechanics

DOI: 10.15625/0866-7136/22179

Author: Nguyen H. Hao

Institutions: Ho Chi Minh City University of Transport, University of Transport and Communications

Language: English

Topic: Metal Forming Simulation Techniques

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funder: Trường Đại học Giao thông vận tải

OpenAlex ID: W4408954394

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