Hydroforming-applications of coherent FE-simulations to the development of products and processes

“…Appropriate fundamentals to determine process controls were developed by plastomechanical approaches as well as by means of FE simulations, e.g. [9][10][11][12][13][14][15].…”

Section: Process Principle and Semifinished Productsmentioning

confidence: 99%

Research and advances in fundamentals and industrial applications of hydroforming

Hartl

2005

Journal of Materials Processing Technology

116

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“…The success of the hydroforming operations widely depends on the quality of pre-bent operations often applied prior to hydroforming. 7 Grantab 8 studied crashworthiness of hydroformed tube geometries and also performed the rotary-draw tube bending experiments and simulations. Sorine 9 also analyzed pre-forming and hydroforming operations performed on advanced high strength steel tubes using experimental and numerical methods.…”

Section: Introductionmentioning

confidence: 99%

Investigation and prediction of springback in rotary-draw tube bending process using finite element method

Sözen

Güler

Bekar

et al. 2012

Proceedings of the Institution of Mechanical Engineers, Part C:

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Rotary-draw tube bending operation is one of the most universal methods used for the tube forming processes. Similar to the other forming methods, some problems such as wall thinning, cross-section distortion, wrinkling, and springback can also be seen on the tubes formed by rotary-draw bending operations. Springback is a very common problem and its prediction plays a crucial role in increasing the efficiency of the tube bending operations and also to overcome the difficulties in the assembly processes. Tube diameter, wall thickness, bend radius, bend angle, and coefficient of friction can be considered as the most effective parameters that cause the variation of springback magnitude. In this study, not a simple one-at-a-time sensitivity analysis, but a thorough investigation of the springback phenomena involving interactions between the geometrical and mechanical parameters is done and surrogate models are developed via the data obtained from finite element analysis using a multi-purpose explicit and implicit finite element software LS-DYNA to analyze the non-linear response of structures. The constructed surrogate models can be utilized to perform fast prediction of springback for a given combination of parameters. Three different surrogate modeling techniques are exploited and it is found that the linear polynomial response surface approximations can provide acceptable accuracy. Finally, experiments are conducted to validate the accuracy of surrogate models. It is observed that the cross-validation error predictions are close to the errors observed in the experiments.

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Hydroforming-applications of coherent FE-simulations to the development of products and processes

Cited by 31 publications

References 2 publications

Formability extension of aerospace alloys for tube hydroforming applications

Formability extension of aerospace alloys for tube hydroforming applications

Research and advances in fundamentals and industrial applications of hydroforming

Investigation and prediction of springback in rotary-draw tube bending process using finite element method

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