Results 31 to 40 of about 484,909 (306)

Determining Forming Limit Diagrams Using Sub-Sized Specimen Geometry and Comparing FLD Evaluation Methods

Metals, 2021
Sheet metal forming boundaries are established using the forming limit diagram (FLD). The Nakajima and Marciniak tests, which are based on stretching a material using a punch, are the most commonly used methods for determining the FLD or fracture forming
Kateřina Rubešová, Martin Rund, Sylwia Rzepa, Hana Jirková, Štěpán Jeníček, Miroslav Urbánek, Ludmila Kučerová, Pavel Konopík   +7 more
doaj   +1 more source

Numerical and experimental analysis of single-acting stroke deep drawing of symmetric low-depth products without blank holder

Ain Shams Engineering Journal, 2021
This study conducts numerical and experimental analyses to study the parameters affecting deep drawing of symmetric low-depth products, such as die geometry, punch movement, and cushioning.
Amr Shaaban, Ahmed Samy Elakkad
doaj   +1 more source

Experimental and numerical analysis of the flanging process by SPIF [PDF]

, 2018
This paper analyses the flangeability of AA2024-T3 sheets using single point incremental forming (SPIF). With this purpose, a series of process parameters is considered including flange length and width, tool radius and spindle speed.
Centeno Báez, Gabriel, López Fernández, José Andrés, Martínez Donaire, Andrés Jesús, Morales-Palma, Domingo, Vallellano Martín, Carpóforo   +4 more
core   +1 more source

Formability Prediction of AISI 304 Steel Sheet Based on Forming Limit Diagram through Finite Element Analysis and Nakazima Test

Journal of Applied Science and Engineering
In this study, the appropriateness of the forming limit stress diagram and the forming limit diagram for predicting the formability of sheets of AISI 304 steel is compared.
T. Mayavan, G. Senthilkumar, L. Karthikeyan, N. Karthikeyan   +3 more
doaj   +1 more source

Numerical Investigation on Comparison of Electromagnetic Forming and Drawing for Electromagnetic Forming Characterization

Metals, 2022
Due to environmental regulations, vehicle weight reduction technology has recently emerged as a key factor influencing market competitiveness in the automobile industry.
Mirae Lim, Hanbi Byun, Yunjun Song, Jungsoo Park, Jeong Kim   +4 more
doaj   +1 more source

Evaluation of formability and fracture of pure titanium in incremental sheet forming [PDF]

, 2017
A forming limit diagram (FLD) is commonly used as a useful means for characterizing the formability of sheet metal forming processes. In this study, the Nakajima test was used to construct the forming limit curve at necking (FLCN) and fracture (FLCF ...
Gatea, Shakir, McCartney, Graham, Ou, Hengan, Xu, Dongkai   +3 more
core   +2 more sources

A review on modelling techniques for formability prediction of sheet metal forming

International Journal of Lightweight Materials and Manufacture, 2018
With an increasing demand for lightweight design of vehicles in automotive and aircraft industries, sheet metals with low density and high strength have been widely and intensively used in forming lightweight structural panel components. Formability is a
Ruiqiang Zhang, Zhutao Shao, Jianguo Lin
doaj   +1 more source

Effects of a strain rate sensitive material on the optimization of an hydroforming process

, 2008
International audienceThe hydroforming process of a T-tube is simulated with the finite element code ABAQUS. The influence of the internal pressure and the axial displacement levels on the final tube quality is evaluated through a "process diagram".
Guines, Dominique, Leotoing, Lionel, Ragneau, Eric, Zhang, Cunsheng   +3 more
core   +3 more sources

No wide spread of stellar ages in the Orion Nebula Cluster [PDF]

, 2011
The wide luminosity dispersion seen for stars at a given effective temperature in the H-R diagrams of young clusters and star forming regions is often interpreted as due to significant (~10 Myr) spreads in stellar contraction age.
Baraffe, Baraffe, Beccari, Bertout, Bessell, Burningham, Carpenter, Cieza, Clarke, Da Rio, Da Rio, Dahm, Elmegreen, Enoch, Fang, Fűrész, Haisch, Hartigan, Hartmann, Hartmann, Herbig, Herbig, Hernández, Hillenbrand, Hillenbrand, Hillenbrand, Hoogerwerf, Huff, Jeffries, Jeffries, Jones, Kennedy, Kraus, Lada, Littlefair, Mann, Mayne, Menten, Mercer-Smith, N. J. Mayne, Naylor, Palla, Palla, Press, Proszkow, R. D. Jeffries, Rebull, Rigliaco, S. P. Littlefair, Sandstrom, Sicilia-Aguilar, Siess, Slesnick, Strom, Störzer, Tan, Tassis, Tim Naylor, Tobin, Tout, Vorobyov, Vázquez-Semadeni   +61 more
core   +3 more sources

Constraints on the Stellar/Sub-stellar Mass Function in the Inner Orion Nebula Cluster [PDF]

, 2000
We present the results of a 0.5-0.9" FWHM imaging survey at K (2.2 micron) and H (1.6 micron) covering 5.1' x 5.1' centered on Theta 1C Ori, the most massive star in the Orion Nebula Cluster (ONC).
Bessell M. S., Bouvier J., D’Antona F., Festin L., Goldsmith P. F., John M. Carpenter, Lynne A. Hillenbrand, Zinnecker H.   +7 more
core   +4 more sources