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Keywords: bending
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Journal Articles
Article Type: Research-Article
J. Manuf. Sci. Eng. December 2018, 140(12): 121010.
Paper No: MANU-18-1183
Published Online: October 5, 2018
... been proposed for the air bending process, however, none of them has the capacity to deal with large radius bending. Large radius bending is characterized by a high ratio of the punch radius to the die opening and it is often applied for high-strength steels because of their limited bendability...
Journal Articles
Article Type: Research Papers
J. Manuf. Sci. Eng. December 2011, 133(6): 061027.
Published Online: December 27, 2011
.... Many times a secondary forming process, such as bending, is required when these materials are used. The intention of the work presented in this article has been to investigate how to automate the process of finding manufacturing limits of the rotary draw bending of aluminum profiles with focus...
Journal Articles
Article Type: Research Papers
J. Manuf. Sci. Eng. December 2011, 133(6): 061003.
Published Online: November 28, 2011
... parts must be numerically predicted, in order to find the optimal combination of outer structure and metal foam properties. While FEM simulation at large deformations of bending, crushing, etc. of thin sheets and tubes is state of the art, the accurate FEM simulation of the mechanical behavior of metal...
Journal Articles
Article Type: Research Papers
J. Manuf. Sci. Eng. August 2011, 133(4): 041008.
Published Online: August 11, 2011
... of deformation (e.g., compression, tension, and bending). When applied, the electricity lowers the required deformation forces, increases part displacement or elongation and can reduce or eliminate springback in formed parts. Within this study, the effects of EAM on the bending of 304 Stainless Steel sheet metal...
Journal Articles
Article Type: Technical Briefs
J. Manuf. Sci. Eng. August 2011, 133(4): 044502.
Published Online: August 11, 2011
... springs the analytical formulas are necessary. In this paper the analytical solution of the problem of elastic–plastic deformation of cylindrical bar under combined bending and torsion moments is found for a special nonlinear stress–strain law. The obtained solution allows the analysis of the active...
Journal Articles
Article Type: Research Papers
J. Manuf. Sci. Eng. June 2011, 133(3): 031014.
Published Online: June 15, 2011
...T. Hussain; Z. Yang; A. A. Popov; S. McWilliam For assembly of rotating machines, such as machining tools, industrial turbomachinery, or aircraft gas turbine engines, parts need to be assembled in order to avoid internal bending of the geometric axis of the rotor to meet functional and vibration...
Journal Articles
Article Type: Research Papers
J. Manuf. Sci. Eng. June 2011, 133(3): 031010.
Published Online: June 10, 2011
...H. Baseri; B. Rahmani; M. Bakhshi-Jooybari In this research, a simulated annealing algorithm was used to minimize the spring-back in V-die bending process. First, an adaptive neuro-fuzzy inference system (ANFIS) model was developed using the data generated based on experimental observations...
Journal Articles
Article Type: Research Papers
J. Manuf. Sci. Eng. December 2010, 132(6): 061001.
Published Online: October 15, 2010
... is composed of several steps mainly including the shock pressure prediction, the modal analysis, and the forming process calculation. System critical damping is introduced to prevent unnecessary long post-shock residual oscillations and to greatly decrease the solution time for simulation. The bending...
Journal Articles
Article Type: Research Papers
J. Manuf. Sci. Eng. August 2010, 132(4): 041017.
Published Online: August 6, 2010
... on various micro- and macro-drills. The model is then used to analyze the effect of geometric parameters on the dynamics of the drills. Geometry of ( a ) a macro-drill and ( b ) a micro-drill The convergence of the shank section (1D) solution: ( a ) the first bending-mode pair along...
Journal Articles
Article Type: Research Papers
J. Manuf. Sci. Eng. August 2010, 132(4): 041018.
Published Online: August 6, 2010
... and a small accelerometer was conducted on one of the macro-drills. In the validation study, five macro-drills and three micro-drills with different geometric parameters are used. It was concluded that the 3D-ST model can capture both bending and torsional-axial natural frequencies and mode shapes of macro...
Journal Articles
Article Type: Research Papers
J. Manuf. Sci. Eng. August 2010, 132(4): 041002.
Published Online: July 21, 2010
... the superelastic effect will be active. Specifically, this work addresses laser forming induced macroscopic bending deformations, postprocess residual stress distributions, and changes in microstructure. Like traditional ferrous alloys, the laser forming process may be used as a means for imparting desired...
Journal Articles
Article Type: Research Papers
J. Manuf. Sci. Eng. April 2010, 132(2): 021001.
Published Online: March 26, 2010
...C. Iacono; J. Sinke; R. Benedictus One of the most widely involved operations in sheet metal forming processes in aircraft industry is bending, particularly, air bending as a simple process. For this reason, the bendability of aluminum alloys is an important material property, which determines...
Journal Articles
Article Type: Research Papers
J. Manuf. Sci. Eng. February 2010, 132(1): 011018.
Published Online: February 12, 2010
...Sunal Ahmet Parasiz; Reid VanBenthysen; Brad L. Kinsey Sheet metal forming often consists of bending processes in which gradients of deformation exists through the thickness of the workpiece in a localized deformation area. In microscale bending, these deformation gradients become much steeper...
Journal Articles
Article Type: Research Papers
J. Manuf. Sci. Eng. February 2010, 132(1): 011013.
Published Online: January 27, 2010
...Dongjiang Wu; Guangyi Ma; Fangyong Niu; Dongming Guo The present work is a research on the laser forming process of borosilicate glass sheet. The laser forming mechanism was analyzed, and the temperature gradient mechanism was considered as the main forming mechanism of glass bending. According...
Journal Articles
Article Type: Research Papers
J. Manuf. Sci. Eng. October 2009, 131(5): 051009.
Published Online: September 23, 2009
...Guosong Lin; S. Jack Hu; Wayne Cai This paper presents a fundamental study for the characterization of formability in bending/hemming, or “bendability/hemmability,” of automotive aluminum alloys. Based on the strain/stress nature of the hemline (bent corner) surfaces, maximum surface strain...
Journal Articles
Article Type: Research Papers
J. Manuf. Sci. Eng. December 2008, 130(6): 061004.
Published Online: October 9, 2008
...- to macroscale) can result. In most instances, the resulting stresses are primarily mechanical in nature and arise from the bending and∕or twisting moments from the still attached scrap. Under these conditions, mixed-mode fracture is all but inevitable since the supporting section is continuously diminishing...
Journal Articles
Article Type: Research Papers
J. Manuf. Sci. Eng. February 2008, 130(1): 011013.
Published Online: February 15, 2008
... the tool path. The feed is adjusted by limiting feed-dependent peak outputs to a set of user-defined constraints. The constraints are the tool shank bending stress, tool deflection, maximum chip load (to avoid edge chipping), and the torque limit of the machine. The linear and angular feeds of the tool...
Journal Articles
Article Type: Technical Briefs
J. Manuf. Sci. Eng. October 2007, 129(5): 979–983.
Published Online: May 30, 2007
... category and has been implemented into a CAD platform as a dedicated module able to take into account manufacturing requirements related to tube bending, hydroforming, and cutting. The expert’s knowledge, in terms of set of rules and criteria, has been implemented by means of the automation tools...
Journal Articles
Article Type: Research Papers
J. Manuf. Sci. Eng. October 2007, 129(5): 868–873.
Published Online: January 31, 2007
.... The tests were performed at different operating conditions: scanning rate, laser spot orientation, and laser beam power. The experimental results revealed the great influence of the laser spot orientation on the total bending angle and the harmful effect of the surface melting during heating. Spot...
Journal Articles
Article Type: Technical Papers
J. Manuf. Sci. Eng. June 2007, 129(3): 592–600.
Published Online: November 30, 2006
...Shakeel Safdar; Lin Li; M. A. Sheikh; Zhu Liu Laser forming is a spring-back-free noncontact forming method that has received considerable attention in recent years. Compared to mechanical bending, no hard tooling, dies, or external force is used. Within laser forming, tube bending is an important...