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The modeling of the multi-pass thick tube roll forming process with rigid plastic finite element method and the edge shape prediction of an initial strip with second-degree polynomial regression method are presented in this paper.
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One of the most important parameters of this process is the initial strip width.
Accurate prediction of the initial strip width is vital for producing sound pipes with desired dimensional and geometrical tolerances.
In order to obtain good quality of a welding zone, it is necessary to predict the edge shape of the initial strip.
Simulation results show that by increasing the initial strip width, more circumferential length reduction is induced to the deformed strip in the fin-pass stands.
Edge shapes of initial strip have been analyzed by the finite element method and designed by the regression method to satisfy the requirements at target fin pass.
When the initial strip was not available, the rhythm was identified from the emergency medical services report.
Begin gluing strips underneath your initial strip until you can no longer circle the helmet.
This ablation of material is found to be a slower form of mass loss than the initial stripping phase.
In this paper, an exact solution for the elastic instability of an infinite linear elastic strip with an initial curvature and loaded in pure in-plane shear is given.
Cells were seeded on custom-made plastic strips at an initial density of 40 000 cells/cm in complete medium and allowed to settle for 72 h before serum-deprivation in charcoal dextran stripped 2% FCS for 24 h prior to strain or treatment.
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