Unique rotation tensor formulation to predict three-dimensional deformation behaviour of aluminum alloy AA7010

Mohd Nor , Mohd Khir (2016) Unique rotation tensor formulation to predict three-dimensional deformation behaviour of aluminum alloy AA7010. International Journal of Mechanical & Mechatronics Engineering IJMME-IJENS, 16 (04).

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Abstract

The formulation of unique orthogonal rotation tensor R for rate dependant constitutive model of orthotropic materials is thoroughly discussed in this work. The implementation of this orthogonal rotation tensor is performed by referring to three theorems; the deformation gradient is invertible, the plastic stretch is symmetric and positive definite, and finally the rotation tensor R is assumed orthogonal hence, R^(-1)=R^(T). The accuracy and stability of this tensor to define an isoclinic configuration for three-dimensional deformation behaviour of aluminum alloy AA7010 is then demonstrated using Taylor Cylinder Impact test. As adopted in the previous publication, subroutine chkrot93 is used to check the accuracy of the proposed formulation to calculate a proper rotation tensor R. The results proved the accuracy of the proposed rotation tensor and its algorithm to calculate a proper rotation tensor and provide a good agreement with respect to the deformation behaviour of material under consideration.

Item Type:Article
Uncontrolled Keywords:orthogonal rotation tensor; orthotropic materials; three dimensional stress state deformation behaviour
Subjects:T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Divisions:Faculty of Mechanical and Manufacturing Engineering > Department of Mechanical Engineering Technology
ID Code:8430
Deposited By:Mr. Mohammad Shaifulrip Ithnin
Deposited On:25 Apr 2017 15:52
Last Modified:25 Apr 2017 15:52

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