Effect of Geometric Parameters on Formability and Strain Path During Tube Hydrforming Process

10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes

Omar, A.^1 ; Harisankar, K.R.^1 ; Tewari, Asim^2 ; Narasimhan, K.^1

Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, India^1

Department of Mechanical Engineering, Indian Institute of Technology Bombay, India^2

关键词: Constraint factor;    Finished products;    Finite element codes;    Forming limit diagrams;    Metal-forming process;    Strain paths;    Tube hydroforming process;    Varying thickness;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/734/3/032104/pdf
DOI  :  10.1088/1742-6596/734/3/032104

来源: IOP

【 摘 要 】

Forming limit diagram (FLD) is an important tool to measure the material's formability for metal forming processes. In order to successfully manufacture a component through tube hydroforming process it is very important to know the effect of material properties, process and geometrical parameters on the outcome of finished product. This can be obtained by running a finite element code which not only saves time and money but also gives a result with considerable accuracy. Therefore, in this paper the mutual effect of diameter as well as thickness has been studied. Firstly the finite element based prediction is carried out to assess the formability of seamless and welded tubes with varying thickness. Later on, effect of varying diameter and thickness on strain path is predicted using statistical based regression analysis. Finally, the mutual effect of varying material property alongwith varying thickness and diameter on constraint factor is studied.