Viscoplastic Constitutive Modeling of Anisotropic Damage Under Nonproportional Loading  

Oleh:

Chu, Edmund ; Chow, C. L. ; Yang, X. J.

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Engineering Materials and Technology vol. 123 no. 4 (2001), page 403-408.
Topik: LOADING; viscoplastic; constitutive modeling; anisotropic damage; non proportional loading

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ87.2 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

Lihat Detail Induk

Isi artikel

Based on the theory of damage mechanics, a viscoplastic constitutive modeling of anisotropic damage for the prediction of forming limit curve (FLC) is developed. The model takes into account the effect of rotation of principal damage coordinates on the deformation and damage behaviours. With the aid of the damage viscoplastic potential, the damage evolution equations are established. Based on a proposed damage criterion for localized necking, the model is employed to predict the FLC of aluminum 6111 - T4 sheet alloy. The predicted results agree well with those determined experimentally.

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