Residual Stresses Measurement Base on Three Reference Points Theory Using Contour Method

Abstract:

The objective of this work is to measure the residual stress normal to the cut plane which has a large size using contour method. Translations and rotations are applied to the second point cloud to assure the continuity of the contour. There is still the same work on the opposing cut plane, align and combine the two contour datasets, perform the interpolation and then integrate with a finite element modelling package to apply many thousands of different boundary conditions. The finite element result shows a good continuity indicating the success of transformation means applied on the point cloud. The result gets the stress distribution normal to the cut plane. Beam forming is simulated to study the residual stress distribution of the stretch-wrap bend forming, the residual stress from contour method and forming simulation present the same trend.

• Periodical: Materials Science Forum (Volumes 800-801)
• Pages: 726-730
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.800-801.726
• Online since: July 2014
• Authors: Kai Qin Yu*, Yin Fei Yang, Liang Li, Ning He, Bo Chen, Xue Feng Zhang
• Keywords: Contour Method, Finite Element, Point Cloud, Residual Stress, Transformation

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