Modeling of Bending and Bend-Stretching of Laminated Aluminum Sheets

Bending and subsequent stretching of sheet materials is typical of many sheet forming operations. Bending and bend-stretching characteristics and limit strain of monolithic AA2024 and laminated tri-layer Alclad 2024 aluminum sheet materials are studied by modeling and experimentation. A computationally efficient analytical model based on advanced bending theory is developed for the laminated sheet materials and utilized to predict the bending …