Mechanical properties and forming behaviour of laminated steel/polymer sandwich systems with local inlays – Part 2: Stretching and deep drawing

2017 ◽  
Vol 160 ◽  
pp. 1084-1094 ◽  
Author(s):  
Mohamed Harhash ◽  
Adele Carradò ◽  
Heinz Palkowski
Keyword(s):  
Mechanical Properties ◽  
Deep Drawing ◽  
Forming Behaviour

scholarly journals Numerical Study on the Forming Behaviour of Multilayer Sheets

Metals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 716
Author(s):  
Armando E. Marques ◽  
Pedro A. Prates ◽  
André F. G. Pereira ◽  
Nataliya A. Sakharova ◽  
Marta C. Oliveira ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Deep Drawing ◽  
Numerical Study ◽  
Physical And Mechanical Properties ◽  
Bulge Test ◽  
Geometrical Parameters ◽  
Equivalent Material ◽  
Element Analysis ◽  
Plastic Behaviour ◽  
Forming Behaviour

Nowadays, composite materials are playing an increasingly important role in material forming processes because they can combine remarkable physical and mechanical properties with relatively low weight. The main objective of this work is to study the forming behaviour of multi-layer sheets by finite element analysis. The possibility of replacing the composite by a single equivalent material, with a plastic behaviour similar to that of the composite, was also numerically analysed. This study focuses on two three-layer sheets, each composed of two metallic outer layers and a core of polymeric material; on one of the sheets, the outer layers are steel and, on the other, aluminium. Numerical simulations of the bulge test and of the deep drawing of a U-channel profile and a square cup were used to evaluate the behaviour of the multi-layer sheets and their equivalent materials. The influences of the difference of the mechanical properties of the constituent materials and some geometrical parameters of the deep-drawing process on the plastic behaviour, namely the curves of force vs. displacement of the punch and the strain and stress distributions, were evaluated. The possibility of using the bulge test to characterize the behaviour of the composite was also analysed.

ALZ 305

Alloy Digest ◽  
1999 ◽  
Vol 48 (9) ◽  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Austenitic Stainless Steel ◽  
Physical Properties ◽  
Deep Drawing ◽  
Heat Treating ◽  
Intermediate Annealing ◽  
Good Corrosion Resistance

Abstract ALZ 305 is an austenitic stainless steel with excellent formability and good corrosion resistance, toughness, and mechanical properties. The higher amount of nickel in this grade enables high deep-drawing deformation without intermediate annealing. This datasheet provides information on composition, physical properties, and elasticity. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-762. Producer or source: ALZ nv.

Forming Behaviour of Al-TiC In Situ Composites

2013 ◽  
Vol 765 ◽  
pp. 418-422 ◽  
Author(s):  
Ram Naresh Rai ◽  
A.K. Prasada Rao ◽  
G.L. Dutta ◽  
M. Chakraborty
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Uniform Distribution ◽  
Interface Bonding ◽  
Microstructure And Mechanical Properties ◽  
Micron Size ◽  
Forming Behaviour ◽  
Al Matrix

The forming behaviour of in-situ Al-TiC composites was investigated by comparing microstructure and mechanical properties of as-cast, forged and rolled specimens. The microstructures of forged and rolled specimens reveal uniform distribution of the TiC particles, which are responsible for the enhancement of the tensile strength of the composite. The formed samples were found to be crack free. This feature is very likely to be due to good interface bonding of uniformly dispersed sub-micron size TiC particles with the Al matrix.

Forming Potential of Steel/Polymer/Steel Sandwich Composites with Local Plate Inserts

2012 ◽  
Vol 706-709 ◽  
pp. 681-686 ◽  
Author(s):  
Heinz Palkowski ◽  
Olga Sokolova ◽  
Adele Carradò
Keyword(s):  
Deep Drawing ◽  
High Performance ◽  
High Strength ◽  
Metal Plate ◽  
Elastic Behaviour ◽  
Forming Limit ◽  
Sandwich Composites ◽  
Strength And Stiffness ◽  
Naval Engineering ◽  
Forming Behaviour

High-performance metal/polymer/metal hybrid sandwich composites are attractive materials for lightweight constructions in automotive, aerospace and naval engineering world-wide. Due to the excellent combination of mechanical, thermal and elastic properties and, as a result of high forming potential, they can be used in areas of high vibration, where high damping properties of the polymer are demanded and at the same time high strength and stiffness are given by the metal. Disadvantages can be given in case of mechanical or thermal joining of these polymer-based sandwiches because of the elastic behaviour as well as low melting temperature of the polymer. Local metal plate insertions in the soft core at the place of joining can be a solution for such kind of problems. But forming behaviour of sandwich materials with and without local inlays differs strongly. Sandwich composites of that type were produced by roll-bonding. Their quality and their position were controlled by Lockin thermography. The forming behaviour of sandwiches with different geometry, size, type and the position of the inlays was tested by deep drawing and bending and analysed with the help of digital photogrammetry and compared to experimentally obtained mechanical properties. As a result, the local inlays, as well as their geometry, size and type strongly influence the forming limit conditions. The differences in flow behaviour of non-reinforced and reinforced sandwich regions after deep drawing and bending will be presented, as well as the influence of the position of the inlays.

A Single Roll Caster for Aluminum Alloy Strip

2011 ◽  
Vol 382 ◽  
pp. 368-371 ◽  
Author(s):  
Toshio Haga ◽  
Kazuya Akitsu ◽  
Shinji Kumai ◽  
Hisaki Watari
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Deep Drawing ◽  
Tension Test ◽  
Bending Test ◽  
Alloy Strip ◽  
Cast Strip ◽  
Strip Cast ◽  
Dc Casting

Single roll caster to cast strip with sound free solidified surface was invented. A scraper was attached to the single roll caster to improve the free solidified surface. AA5182 and AA6022 strips were cast using the single roll caster equipped with the scraper. Mechanical properties of the strip were investigated by tension test, bending test and deep drawing. Mechanical properties of the strip cast by the single roll caster were as same as those made by DC casting.

Experimental Investigations on the Influence Factors of Paperboard Deep Drawing

2012 ◽  
Vol 200 ◽  
pp. 511-515
Author(s):  
Ya Jie Li ◽  
Zhong Ji ◽  
Ren Liu ◽  
Yi Guo Luan ◽  
Chao Zheng
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Surface Quality ◽  
Process Parameters ◽  
Deep Drawing ◽  
Influence Factors ◽  
Experimental Investigations ◽  
Blank Shape ◽  
Shape And Size

Experiments were conducted to study which type of paperboard and process parameters are suitable for deep drawing of paperboard into trays. The tray is a shallow rectangle box with round corners, wavy bottom and indented walls. Paperboard used in this paper is anisotropic, and its mechanical properties include tensile strength and elongation. Results show that paperboard with the basis weight of 260g/m2 is the suitable type. Proper moisture can improve the tensile strength and ensure the surface quality. Improper blank shape and size can result in wrinkling and cracking.

Sheet metal forming behaviour and mechanical properties of TRIP steels

1999 ◽  
Vol 70 (11) ◽  
pp. 472-479 ◽  
Author(s):  
Wolfgang Bleck ◽  
Joachim Ohlert ◽  
Kostas Papamantellos
Keyword(s):  
Mechanical Properties ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Trip Steels ◽  
Forming Behaviour

scholarly journals Production of Customized High-Strength Hybrid Sandwich Structures

2010 ◽  
Vol 137 ◽  
pp. 81-128 ◽  
Author(s):  
Olga Sokolova ◽  
Adele Carradó ◽  
Heinz Palkowski
Keyword(s):  
Deep Drawing ◽  
Steel Plate ◽  
High Strength ◽  
Image Correlation ◽  
Sandwich Composite ◽  
Adhesion Properties ◽  
Mesh Reinforcement ◽  
Four Point Bending ◽  
Reinforced Steel ◽  
Forming Behaviour

The production process and the forming behaviour of locally reinforced steel/polymer/steel (316L/PP-PE/316L) hybrid sandwich composite materials (SMS) have been investigated. The effect of simple plate reinforcements with different size, shape and geometry on the forming limits of SMS was studied. As a local reinforcement, the simple solid steel and mesh steel plate inlays with central and edge positions were chosen instead of a polymer core as a sandwich laminate. In order to increase the adhesion properties between the metal and polymer layers, corona discharge and plasma preliminary surface treatments were applied prior to the sandwich production. Both, deep drawing and stretching cup-forming tests were performed in order to analyse the forming behaviour as well as the failure of SMS with and without local inlays subject to different tensile loadings. The influence of the local reinforcement on the bending behaviour was determined by three and four-point bending processes. Stress-strain curves and thinning behaviour of SMS with local reinforcements under the different forming loads were determined using digital image correlation via photogrammetry. The forming behaviour strongly depends on the quality, geometry and size of the local plate inlays. Owing to the different positions of reinforcement as well as to the different polymer content around of inlays, failure of SMS by bending and drawing differs. The sandwich samples with mesh reinforcement demonstrate better formability by drawing and bending than that of samples with solid plates. In order to minimise the loss in formability of sandwich samples during deep drawing, the size of the centred reinforcement has to be larger than the punch diameter.

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