Process Characterization of Sheet Metal Spinning by Means of Finite Elements

Author(s):  
Gerd Sebastiani ◽  
Alexander Brosius ◽  
Werner Homberg ◽  
Matthias Kleiner
2007 ◽  
Vol 344 ◽  
pp. 637-644 ◽  
Author(s):  
Gerd Sebastiani ◽  
Alexander Brosius ◽  
Werner Homberg ◽  
Matthias Kleiner

Sheet Metal Spinning is a flexible manufacturing process for axially-symmetric hollow components. While the process itself is already known for centuries, process planning is still based on undocumented expertise, thus requiring specialized craftsmen for new process layouts. Current process descriptions indicate a vast scope of different dynamic influences while the underlying mechanical model uses a simple static approach. Thus, a 3D Finite Element Model of the process has been set up at IUL in order to analyze the process in detail, providing online as well as cross sectional data of the specimen formed. Within the scope of this article, the results of the above mentioned Finite Element Analysis (FEA) are presented and discussed with respect to the qualitative stress distributions introduced in the existing theoretical models. Main emphasis of this paper is set on a discussion of the qualitative stress distribution, which is, to the current state, only known in theory.


Fuel ◽  
2021 ◽  
pp. 122670
Author(s):  
Yuebing Zhang ◽  
Quangui Li ◽  
Qianting Hu ◽  
Cheng Zhai ◽  
Mingyang Song ◽  
...  

2014 ◽  
Vol 39 (4) ◽  
pp. 28-41
Author(s):  
Mehmet Emin Şalgamcıoğlu ◽  
Alper Ünlü

This study compared the gentrification processes in Cihangir and Tarlabasi. The dynamics of the gentrification process in Cihangir is compared with the vastly different gentrification process in Tarlabasi. Interpretations of gentrification are also included in this paper. The study analyzed the dynamics of the gentrification process in Cihangir, Istanbul (Turkey) to determine the extent of change during the process. Characterization of the Cihangir neighborhood, which distinguishes Cihangir from other gentrified urban areas, is another aspect of this study. The transformation of Cihangir is currently underway; it involves the revolution and renovation of land and buildings, which is known as gentrification. The gentrification process in Cihangir is affected by socio-economic and socio-cultural transformations. This paper examines gentrification in the Cihangir neighborhood, which has occurred spontaneously and supports the perpetuation of social diversity, which occurs in many urban areas. Although Istanbul’s Tarlabasi region exhibits geophysical characteristics that resemble the geophysical characteristics of Cihangir, Tarlabasi is affected by a completely different gentrification process, which is known as planned gentrification. In the context of this study, scholars question whether gentrification is “erasing the social geography of urban land and unique architectural pattern,” or if gentrification represents “the upgrading and renaissance of the urban land.” (Smith, 1996)


2003 ◽  
Vol 15 (2) ◽  
pp. 22-27 ◽  
Author(s):  
David Geiger ◽  
Fredrik Mattsson ◽  
Dongkai Shangguan ◽  
MT Ong ◽  
Patrick Wong ◽  
...  

2000 ◽  
Author(s):  
Andreas Ciossek ◽  
Peter Lehmann ◽  
Stefan Patzelt ◽  
Gert Goch

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