Results 171 to 180 of about 365,605 (203)

Tube Hydroforming - State-of-the-Art and Future Trends

SAE Technical Paper Series, 1999
<div class="htmlview paragraph">With the availability of advanced machine designs and controls, tube hydroforming has become an economic alternative to various stamping processes. The technology is relatively new so that there is no large “knowledge base” to assist the product and process designers.
M Ahmetoglu, T Altan
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Wrinkling Study in Tube Hydroforming Process

Key Engineering Materials, 2011
Tube Hydroforming Process (THF) is heavily affected by the pressure-displacement diagram, and adjustment of the raw tube. Three common defects of the process are bursting, buckling and wrinkling. In this work, the leading conditions to wrinkling defect have been studied.
Khalil Khalili, S. Ehsan Eftekhari Shahri, Parviz Kahhal, M. Soheil Khalili   +3 more
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Virtual process development in tube hydroforming

Journal of Materials Processing Technology, 2004
Abstract In order to successfully develop a new tube hydroforming (THF) process, a system approach is recommended. Problems and improvements in each area of the THF technology and their interactions should be considered. In the product and process design phases, in order to reduce the cost of physical prototyping, virtual prototyping, i.e.
STRANO, MATTEO, SUWAT JIRATHEARANAT, SHIUANGUANG SHR, TAYLAN ALTAN   +3 more
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Analysis of Tube Expansion by Hydroforming

Transactions of the Korean Society of Mechanical Engineers A, 2002
Recently the hydroforming technology has drawn a lot of attention because of its capability to produce high quality and light weight parts. In the present study, the tube expansion - one of the simplest hydroforming processes, has been investigated in order to understand fundamental phenomena such as deformation characteristics and effect of process ...
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Tube size effect on hydroforming formability

Journal of Materials Processing Technology, 2005
Abstract The excessive thinning generated in hydroformed products using tubular blank is attributable to the contact friction force restraining the tube wall movement on the tool inner surface. Therefore, it is fundamental and significant to take tube diameter as large as possible prior to designing a promising loading path.
Sung-Jong Kang, Hyoung-Kwang Kim, Beom-Soo Kang   +2 more
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Finite element simulation of the tube hydroforming process—bending, preforming and hydroforming

Journal of Materials Processing Technology, 2002
Abstract This paper covers finite element simulations of the complete hydroforming process for the lower part of an A-pillar for a car. Simulations were carried out for the bending, preforming and hydroforming process using the MPP-version of the explicit code LS-DYNA.
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Hydroformed seam-welded aluminium tubes

ATZautotechnology, 2001
Modern cars consist of a steadily increasing variety of materials and semi-finished products. Traditionally used materials, such as steel sheet and cast iron, are being substituted more and more by other materials and advanced semis, e.g. welded tailored blanks or composite materials.
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Wrinkling and Necking Instabilities for Tube Hydroforming

International Journal of Forming Processes, 2002
Nefussi, Germaine, Combescure, Alain, Dahan, N.   +2 more
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Lubrication in tube hydroforming (THF)

Journal of Materials Processing Technology, 2004
Gracious Ngaile, Stefan Jaeger, Taylan Altan   +2 more
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Tube hydroforming: current research, applications and need for training

Journal of Materials Processing Technology, 2000
X J Li, T Altan
exaly