Internal pressure and counterpunch action design in Y-shaped tube hydroforming processes: A multi-objective optimisation approach

2009 ◽  
Vol 87 (9-10) ◽  
pp. 591-602 ◽  
Author(s):  
Giuseppe Ingarao ◽  
Rosa Di Lorenzo ◽  
Fabrizio Micari
Keyword(s):  
Internal Pressure ◽  
Tube Hydroforming ◽  
Multi Objective ◽  
Shaped Tube

Optimization of Internal Pressure Loading Path for Tube Hydroforming of T-Shaped Tube Based on Dynaform

2014 ◽  
Vol 800-801 ◽  
pp. 703-707
Author(s):  
Shi Gang Wang ◽  
Shun Chen ◽  
Dan Wang ◽  
Wen Cai Xie
Keyword(s):  
Internal Pressure ◽  
Tube Hydroforming ◽  
Simulation Software ◽  
Loading Path ◽  
Pressure Loading ◽  
Forming Process ◽  
Forming Quality ◽  
Shaped Tube ◽  
Similarities And Differences

Take the T-shaped tube as the research object, studied the principles and theory. The paper researched the influence of single liner internal pressure loading path and bilinear internal pressure loading path and the gradient of internal pressure loading path on the forming quality of T-shaped tube with the help of FEA and DYNAFORAM simulation software. The paper researched the each method of forming process, and the relation between wall thickness thinning/thickening and the loading path of internal pressure, compared the similarities and differences. The results show that the gradient of internal pressure loading path is the best way, and the internal pressure should be increased growth rate in the pre-formed, so that get a small thickness reduction part.

Improvement of Filling of Die Corners in Box-Shaped Tube Hydroforming by Control of Wrinkling

2007 ◽  
Vol 344 ◽  
pp. 461-467 ◽  
Author(s):  
M. Loh-Mousavi ◽  
Kenichiro Mori ◽  
K. Hayashi ◽  
M. Bakhshi
Keyword(s):  
Internal Pressure ◽  
Tube Hydroforming ◽  
Three Dimensional ◽  
Element Simulation ◽  
Shaped Tube ◽  
Dimensional Finite Element ◽  
Hydroforming Process ◽  
Simulation And Experiment ◽  
The Mean ◽  
Three Dimensional Finite Element

The filling of the die corner in hydroforming of a tube with a box die was improved by controlling wrinkling under oscillation of internal pressure. In this process, a small wrinkle occurs near the die corner in the former stage, and then the wrinkle is eliminated in the latter stage because the flat bulge appears in the former stage due to the oscillation of internal pressure. A hydroforming process of steel tubes with a box die was performed in both three dimensional finite element simulation and experiment. The filling of the die corner for the mean linear pressure was not sufficient due to large wrinkles appearing in the former stage, whereas bursting occurs for the peak linear pressure due to round bulging. On the other hand, the uniformity of wall thickness of the formed tube was improved by the pulsating pressure.

Corner Fill Modeling of Tube Hydroforming

2000 ◽  
Author(s):  
J. Y. Chen ◽  
Z. C. Xia ◽  
S. C. Tang
Keyword(s):  
Numerical Experiment ◽  
Internal Pressure ◽  
Process Design ◽  
Tube Hydroforming ◽  
Design Guidelines ◽  
Structural Components ◽  
Round Tube ◽  
Fundamental Understanding ◽  
Hydroforming Process ◽  
Square Box

Abstract Hydroforming process provides important advantages for automotive structural components over conventional stamp-and-weld parts, but it also brings unique challenges in process design. This paper attempts to obtain fundamental understanding of the process through corner fill modeling. A round tube is pressurized to expand into a square box with tight radius in the numerical experiment. Several parameters are identified and investigated during the process, namely, the internal pressure, end feed, and the lubricant. Their effects on the deformation profiles are presented, and their importance in process design is discussed. The established design guidelines from the study can be a valuable tool for hydroforming process engineers and part designers.

Improvement of Filling of Die Corners in Box-Shaped Tube Hydroforming by Control of Wrinkling

2007 ◽  
pp. 461-467 ◽  
Author(s):  
M. Loh-Mousavi ◽  
Kenichiro Mori ◽  
K. Hayashi ◽  
M. Bakhshi Jooybari
Keyword(s):  
Tube Hydroforming ◽  
Shaped Tube

Effect of internal pressure distribution on thickness uniformity of hydroforming Y-shaped tube

2011 ◽  
Vol 21 ◽  
pp. s423-s428 ◽  
Author(s):  
Jun-yang PENG ◽  
Wen-da ZHANG ◽  
Gang LIU ◽  
Shi-qiang ZHU ◽  
Shi-jian YUAN
Keyword(s):  
Internal Pressure ◽  
Pressure Distribution ◽  
Thickness Uniformity ◽  
Shaped Tube

Effect of the Load Path on Formability of T-Shaped Tube Hydroforming

2011 ◽  
Vol 101-102 ◽  
pp. 962-965 ◽  
Author(s):  
Wen Liu ◽  
Ji Qiang Li ◽  
Bin Bin Chen ◽  
Zhi Xin Jia
Keyword(s):  
Tube Hydroforming ◽  
Fem Simulation ◽  
Evaluation Index ◽  
Load Path ◽  
Line Load ◽  
Evaluation Indexes ◽  
Shaped Tube ◽  
Simulation Results

Based on the analysis of now available evaluation indexes to estimate the formability of T-shaped tube hydroforming, an aggregative indicator is proposed. The effect of load path on the formability of T-shaped tube is discussed by FEM simulation, and validity of the evaluation index and simulations are proved by experiment. Results show that with the broken line load path of 0-35-35-60, the value of aggregative indicator is the greatest and the formability is the best. The optional parameters are testified by experiment and the results are in agreement with the FEM simulation results.

Numerical Simulation and Optimization of a Tee Shaped Tube Hydroforming Process

2006 ◽  
Author(s):  
J. Crapps ◽  
H. Fang ◽  
M. F. Horstemeyer
Keyword(s):  
Multiobjective Optimization ◽  
Tube Hydroforming ◽  
Industrial Process ◽  
Material Model ◽  
Simulation And Optimization ◽  
History Effects ◽  
Shaped Tube ◽  
Hydroforming Process ◽  
Optimization Methodology ◽  
Using Data

We performed numerical simulations and multiobjective optimization of a hydroforming process for copper tees using the BCJ plasticity material model developed by Bammann et al., which accounts for material manufacturing and history effects. A finite element simulation of the hydroforming process was created using data from experiments and the industrial process. The process parameters and geometry factors were optimized using a multiobjective optimization methodology employing metamodeling and software developed at Mississippi State University’s Center for Advanced Vehicular Systems.

Tube Hydroforming Analysis Based on Ansys

2012 ◽  
Vol 232 ◽  
pp. 537-540
Author(s):  
Xiao Yu Yang
Keyword(s):  
Internal Pressure ◽  
Tube Hydroforming ◽  
Ansys Software ◽  
Paper Briefly ◽  
Hydroforming Process

This paper briefly introduces some problems of tube hydroforming process, at the same time, also uses Ansys software to simulate in tube hydroforming process. And draw an conclusion，To avoid defects in tube hydroforming process, the applied internal pressure must be high enough to suppress buckling but not too high to cause bursting.

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