Abstract
Layer removal method is an experiment method which is used to calculate the average stress indirectly by deformation of the specimen. However, in the experiment, some certain predeformation can be caused after each clamping, which can affect the accuracy of the test data, and make the deformation data larger. Based on the comparison of the simulation calculation, this paper builds an amended function by fitting the deformation error, which solves the deviation caused by larger deformation on stress calculation while the specimen is milled by layer, that is to say, the stress calculation model can be compensated by this function. This method can make the experimental calculation model more accurate.
Highlights
Improvement to Stress Calculation Model of LRM in Thick plate1. School of Mechanical and Electrical Engineering, Central South University of Forestry and Technology, Changsha 410083, China
Layer removal method is a more traditional mechanical testing method
Daniel James Greving put forward an improved algorithm (MLRM) for hot coating material in the paper[1], which was to assume that stripped layer stress was a constant based on the principle of superposition. He solved the corresponding stress of the deformation layer by layer, and made the successive residual stress distribution come to be matching results by dispersing it to each strain interval
Summary
1. School of Mechanical and Electrical Engineering, Central South University of Forestry and Technology, Changsha 410083, China. 3.School of Mechanical and Electronic Engineering, Central South University, Changsha, China. Abstract:Layer removal method is an experiment method which is used to calculate the average stress indirectly by deformation of the specimen. In experiments, some certain predeformation can be caused after each clamping, which can affect the accuracy of the test data, and make the deformation data larger. Based on the comparison of the simulation calculation, this paper builds an amended function by fitting the deformation error, which solves the deviation caused by larger deformation on stress calculation while the specimen is milled by layer, that is to say, the stress calculation model can be compensated by this function This method can make the experimental calculation model more accurate
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