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A platform for research: civil engineering, architecture and urbanism
Axial compression of the empty capped-end frusta during the inversion progress
Highlights ► This paper studies inversion process of empty capped-end frusta. ► Inversion force and absorbed energy by the frusta are calculated, theoretically. ► Maximum inversion force of the empty frusta is predicted, theoretically. ► Comparison of theoretical and experimental results shows a good correlation.
Abstract This paper introduces a new theoretical model of plastic deformation during the inversion process on the capped-end frusta using a solid cylindrical punch. Based on the theoretical deformation model, the instantaneous axial load versus the displacement during the inversion process of the capped-end frusta is predicted. In the analytical model, the inversion process is divided into two different stages including plastic deformation of the frusta bottom and inversion of the frusta wall. Also, instantaneous absorbed energy versus the axial displacement and maximum inversion load during the process are estimated using the theoretical model. Some axial inversion experiments were carried out on capped-end conical tubes with different materials and geometrical dimensions to verify the present theory. A good agreement between the theoretical predictions and the experimental results affirms precision and accuracy of the new theoretical model and the analytical formulas.
Axial compression of the empty capped-end frusta during the inversion progress
Highlights ► This paper studies inversion process of empty capped-end frusta. ► Inversion force and absorbed energy by the frusta are calculated, theoretically. ► Maximum inversion force of the empty frusta is predicted, theoretically. ► Comparison of theoretical and experimental results shows a good correlation.
Abstract This paper introduces a new theoretical model of plastic deformation during the inversion process on the capped-end frusta using a solid cylindrical punch. Based on the theoretical deformation model, the instantaneous axial load versus the displacement during the inversion process of the capped-end frusta is predicted. In the analytical model, the inversion process is divided into two different stages including plastic deformation of the frusta bottom and inversion of the frusta wall. Also, instantaneous absorbed energy versus the axial displacement and maximum inversion load during the process are estimated using the theoretical model. Some axial inversion experiments were carried out on capped-end conical tubes with different materials and geometrical dimensions to verify the present theory. A good agreement between the theoretical predictions and the experimental results affirms precision and accuracy of the new theoretical model and the analytical formulas.
Axial compression of the empty capped-end frusta during the inversion progress
Niknejad, Abbas (author) / Tavassolimanesh, Ahmad (author)
2013-01-07
11 pages
Article (Journal)
Electronic Resource
English
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