Numerical Analysis of the Ball Forming Process in Copper Ball Bonding

1993 ◽  
Vol 5 (3) ◽  
pp. 50-52
Author(s):  
F. Hongyuan ◽  
Q. Yiyu ◽  
J. Yihong
Keyword(s):  
Numerical Analysis ◽  
Forming Process ◽  
Ball Bonding

Numerical Analysis of the Bali. Forming Process in Copper Ball Bonding

1991 ◽  
Vol 226 ◽  
Author(s):  
Fang Iiongyuan ◽  
Oian Yiyu ◽  
Jiang Yihong
Keyword(s):  
Temperature Field ◽  
Numerical Analysis ◽  
Displacement Field ◽  
Copper Wire ◽  
Regular Pattern ◽  
Forming Process ◽  
Ball Bonding ◽  
Ultrafine Copper

AbstractIn this paper, the forming process of copper wire ball in copper ball bonding has been studied by numerical analysis. By means of calculation of temperature field, speed field and displacement field for ultrafine copper wire under a miniarc, the regular pattern of copper wire ball formation has been clarified. In this paper, the calculating result of displacement field has also been tested and verified.

Numerical Analysis of the Ball Forming Process in Copper Ball Bonding

1991 ◽  
Vol 225 ◽  
Author(s):  
Fang Hongyuan ◽  
Qian Yiyu ◽  
Jiang Yihong
Keyword(s):  
Temperature Field ◽  
Numerical Analysis ◽  
Displacement Field ◽  
Copper Wire ◽  
Regular Pattern ◽  
Forming Process ◽  
Ball Bonding ◽  
Ultrafine Copper

ABSTRACTIn this paper, the forming process of copper wire ball in copper ball bonding has been studied by numerical analysis. By means of calculation of temperature field, speed field and displacement field for ultrafine copper wire under a miniarc, the regular pattern of copper wire ball formation has been clarified. In this paper, the calculating result of displacement field has also been tested and verified.

Numerical analysis in a beverage can utilizing tube hydroforming process

2019 ◽  
Vol 28 (6) ◽  
pp. 77-83
Author(s):  
Jorge Carlos León Anaya ◽  
José Antonio Juanico Loran ◽  
Juan Carlos Cisneros Ortega
Keyword(s):  
Mechanical Properties ◽  
Numerical Analysis ◽  
Metal Forming ◽  
Tube Hydroforming ◽  
Forming Process ◽  
Aluminum Tube ◽  
Plastic Deformation Process ◽  
Metal Forming Process ◽  
Hydroforming Process

Numerical analysis for Tube Hydroforming (THF) was developed in this work to predict the behavior of extruded aluminum tube in a forming die for beverage can applications. THF is a metal forming process dependent of three parameters: friction between the tube and the die, internal pressure, and material properties of the tube. Strain hardening is a governing phenomenon that occurs in the plastic deformation process of metals. Hollomon’s equation offers a mathematical description of the metal behavior in the plastic zone. For a proper simulation, experimental determination of the mechanical properties of aluminum 6061-T5 were conducted and test specimens where obtained directly from the aluminum tube. Experimental data were necessary because no sufficient data of the mechanical properties of the tube were available in the literature. Numerical simulations of THF were performed, and the results were compared with analytical results for validation purposes with less than 10% of error.

Experimental Test and FEA of a Sheet Metal Forming Process of Composite Material and Steel Foil in Sandwich Design Using LS-DYNA

2015 ◽  
Vol 651-653 ◽  
pp. 439-445 ◽  
Author(s):  
Bernd Arno Behrens ◽  
Milan Vucetic ◽  
A. Neumann ◽  
Tomasz Osiecki ◽  
Nenad Grbic
Keyword(s):  
Composite Material ◽  
Numerical Analysis ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Material Design ◽  
Unidirectional Composite ◽  
Forming Process ◽  
Metal Forming Process ◽  
Steel Foils

A structural concept in multi-material design is used in the automotive industry with the aim of achieving significant weight reductions of conventional car bodies. In this respect, the specific use of steel foils and continuous fiber-reinforced thermoplastics represents an interesting material combination for the production of hybrid parts in sandwich design. This contribution deals with the experimental and numerical analysis of a conventional sheet metal forming process using a composite material based on Polyamide 6 (PA6) with unidirectional endless glass fiber reinforcement and HC220Y+ZE steel foil. A unidirectional composite plate is positioned between two steel foils in sandwich design and formed under appropriate temperature conditions. For the numerical analysis of the forming process the software LS-DYNA is used.

scholarly journals Numerical Analysis of a Skew Rolling Process for Producing a Stepped Hollow Shaft Made of Titanium Alloy Ti6Al4V

2016 ◽  
Vol 61 (2) ◽  
pp. 677-682 ◽  
Author(s):  
Z. Pater ◽  
T. Bulzak ◽  
J. Tomczak
Keyword(s):  
Numerical Analysis ◽  
Thickness Distribution ◽  
Effective Strain ◽  
Rolling Process ◽  
Forming Process ◽  
Hollow Shaft ◽  
Wall Thickness Distribution ◽  
Light Trucks ◽  
Titanium Alloy Ti6al4v ◽  
Skew Rolling

Abstract The paper describes a rolling process for a hollow Ti6Al4V alloy shaft used in driving systems of light trucks. The shaft is formed by skew rolling using three tapered rolls. The principle of this forming process was discussed stressing its universality due to the potential of applying it for forming various products by one set of rolls. The numerical analysis results (product shape progression in rolling, wall thickness distribution, effective strain, temperature and variations in loads and torques) confirm that the proposed technique can be used for producing hollow long shafts.

Study on a New Forming Method of the Honeycomb Semi-Cell Structures

2013 ◽  
Vol 423-426 ◽  
pp. 966-971
Author(s):  
Lei Qin ◽  
Hai Liang Zhang ◽  
Chang Jie Luo
Keyword(s):  
Numerical Analysis ◽  
Roll Forming ◽  
Forming Process ◽  
Cell Structures ◽  
Set Up

A new forming method of honeycomb semi-cell structures was proposed by analyzing the defects of finished products processed by traditional roll forming method. Using ANSYS/LS-DYNA, a numerical analysis of its forming process was set up. A new forming equipment has been developed to conduct experiments. The results of experimental and numerical analysis show that the new forming method of the honeycomb semi-cell structures is feasible and superior.

A Study of Hydroforming for Processing Composites

2000 ◽  
Author(s):  
Michael A. Zampaloni ◽  
Farhang Pourboghrat ◽  
Andre Benard
Keyword(s):  
Numerical Analysis ◽  
Thermal Effects ◽  
Fluid Pressure ◽  
Cost Savings ◽  
Internal Stresses ◽  
Composite Sheet ◽  
Forming Process ◽  
Part Geometry ◽  
Glass Fiber Reinforced ◽  
Sheet Stamping

Abstract The use of hydroforming to shape complex composite parts is proposed in this work. Hydroforming is expected to greatly increase the formability of composite sheet by the use of a controllable heated, pressurized fluid. Hydroforming, in comparison with sheet stamping, is a more economical manufacturing process, since it does not require the use of a female die. The pressurized fluid acts as a support for the composite sheet throughout the forming process. A numerical analysis has been performed on this process in order to develop a method of predicting the final part geometry. The numerical analysis takes into account the pressurized fluid, the thermal effects, and the clamping mechanism used to hold the material in place as the part is formed. Numerical results show that using hydroforming for manufacturing glass fiber reinforced polypropylene composite material significantly reduces the strain, especially within the cup region of the hemispherical part. The fluid pressure also has an effect on the internal stresses of the part by allowing deeper draws before rupture. The experimentation, coupled with the prediction of the finite element modeling, indicates that the hydroforming of composite materials is a viable processing method that deserves more attention based on the significant advantages it provides in cost savings and part production accuracy.

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