By Dunwen Zuo, Hun Guo, Hongli Xu, Chun Su, Chunjie Liu
Ebook annotation no longer on hand for this title.
Title: Frontier in practical production Technologies
Author: Zuo, Dunwen (EDT)/ Guo, Hun (EDT)/ Xu, Hongli (EDT)/ Su, Chun (EDT)/ Liu, Chunjie (EDT)
Publisher: Trans Tech Pubn
Publication Date: 2010/10/19
Number of Pages: 327
Binding variety: PAPERBACK
Library of Congress:
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Extra info for Frontier in Functional Manufacturing Technologies: Selected, Peer Reviewed Papers from the 2nd International Conference on Functional Manufacturing ... Harbin, Hei
According to the diffusion kinetics, the driving force for the IMC formation is dependent on the activity of its constituent elements [16−18]. For Cu-Sn IMC, the formation of driving force, that is, the Gibbs free energy, is dependent on the activity of Cu and Sn at the interface in solder alloy system. Lowering the activity and reducing the diffusion of Cu and Sn will be an effective method to depress the growth of the Cu-Sn IMC interface. There is a larger possibility for Er and Sn elements to form a compound and then the activity of Sn will be lowered.
Most FEA software, including ANSYS, does not provide single side constraint. In this paper contact analysis has been used for the solution of single-side constraint in order to simulate the real fixture more authentically. The worktable is considered as a rigid body in the FEA model, so the part can not move towards it. Discretization and Exertion of Residual Stress. To apply residual stress in the finite element model, Firstly, we should discrete the curve of residual stress, and discrete points is consistent with the model layer.
The material of the part is aero-aluminum alloy 7050T7451. The alloy is assumed to be an elastic-plastic material. Its physical specifications are listed in Table 1. 33 Tensile strength σ b (MPa) 530 Thin-walled machining deformation caused by the existence of the initial residual stresses is very complex. So it is necessary to make clear the effect of the initial residual stress on the machining deformation in order to find the deformation rule of thin-walled parts. And the residual stress distribution in specimen of 7050T7451 aluminum alloy plate is measured by using the modified removal method.
Frontier in Functional Manufacturing Technologies: Selected, Peer Reviewed Papers from the 2nd International Conference on Functional Manufacturing ... Harbin, Hei by Dunwen Zuo, Hun Guo, Hongli Xu, Chun Su, Chunjie Liu