Prediction of forming limit diagrams for AL6111-T4 under non-proportional loading

• Published in: International journal of mechanical sciences Vol. 43; no. 2; pp. 471 - 486
• Main Authors: Chow, C.L., Yu, L.G., Tai, W.H., Demeri, M.Y.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.02.2001; Elsevier
• Subjects: AL 6111-T4; Applied sciences; Damage Mechanics; Exact sciences and technology; Forming; Forming limit diagrams; Fracture mechanics (crack, fatigue, damage...); Fracture mechanics, fatigue and cracks; Fundamental areas of phenomenology (including applications); Inelasticity (thermoplasticity, viscoplasticity...); Metals. Metallurgy; Non-proportional loading; Physics; Press forming of metal foils and wires; Production techniques; Solid mechanics; Structural and continuum mechanics; Viscoelasticity, plasticity, viscoplasticity; Non-proportional loading; Damage Mechanics; AL 6111-T4; Forming limit diagrams; Aluminium base alloys; Necking; Forming limit curve; Forming; Formability; Experimental study; Modeling; Non proportional load; Stress path; Inelasticity; Anisotropy; Sheet metal; Localization; Damaging
• ISSN: 0020-7403; 1879-2162
• DOI: 10.1016/S0020-7403(99)00123-X

In this paper, an anisotropic damage model for predicting FLDs is extended to predict the sheet metal formability under non-proportional loading involving changing directions of principal strain plane and damage plane. The material chosen for the prediction of FLDs is AL6111-T4 aluminum alloy. A satisfactory agreement between the model predictions and test results has been achieved.