Experimental and numerical investigation of impact resistance of aluminum–copper cladded sheets using an energy-based damage model

Abstract

Cladded multilayer multi-material sheets are now extensively being used in different engineering fields. These sheets are well known for their excellent mechanical and functional properties, corrosion resistance and electrical conductivity. In the present study, low velocity impact of cladded two-layer sheets has been studied experimentally and numerically. The desired sheets were fabricated from aluminum AA1200 and copper (OFHC), and then, they were impacted at the impact energy of 45 J using two different impactor nose shapes. The effect of stacking sequence of the constituent layers on impact behavior of the cladded sheets was also investigated. Numerical modeling of the problem was carried out using finite element method where an energy-based rate-dependent damage model was developed and employed to model the behavior of the impacted sheets including damage initiation and evolution. The required rate constants were achieved using a direct experimental procedure as well as a calibration process via genetic algorithm. Also, for the numerical part of the research, one more impactor nose shape and two more impact energies were considered to be studied. Accuracy of both the finite element modeling and developed damage model was admitted by comparing the numerical results with experimental ones. Moreover, the achieved results prove the advantage of the Al/Cu sheet over the Cu/Al one in terms of both the energy absorption and impact strength.

Effects of equal channel angular rolling process on the mechanical properties of Al-Cu two-layer sheets: experimental and numerical approaches

“…Nowadays, laminated steels are used in different industries, such as aerospace, nuclear, and food production. Furthermore, not only do two-layer metallic sheets have industrial applications, including automobile, aerospace, electrical, and chemical industries [19][20][21][22][23][24][25], but also domestic applications due to their advantages, such as improving the formability of low-formable components, increasing the wear resistances, and decreasing the spring-back [26,27]. Different techniques have been implemented for welding different metals using explosive welding [28].…”

Determination of Dimple Core Design Configurations for Sandwich Panel Enhancement Using Fuzzy-Hybrid Decision Making Analysis

“…Sandwich panel failure analysis usually involves the analysis of material properties and behaviours, such as ductility and flexural behaviours, especially at the joining area [17]. Previous studies revealed that FEA has been used to analyse sandwich panels, especially the influence of the size cell and the configuration of the core panel inside the sandwich panel [18,19]. The literature suggests that most researchers have used F-AHP and F-TOPSIS to indicate the optimum selection of the design parameters for a certain application, such as the material selection and machining conditions [20].…”

Experimental and numerical evaluation of formability in three-layer metallic sheets with various layer arrangements

“…Multilayer materials composed of two or more different layers are commonly used in various industrial applications such as automotive, aviation and electrical industries, power plants, oil, gas, petrochemical, containers and pressure vessels. The mechanical properties of multilayer materials can be improved by combination of different layers [1][2][3][4]. The multi-layer metallic sheets, also called sandwich metallic sheets, comprise of more than one layer of the same or different metals bonded to each other, which are becoming popular in the aerospace and automotive industries [5].…”