Numerical modelling of the structural behaviour of thin-walled cast magnesium components

Dørum, Cato; Hopperstad, Odd Sture; Lademo, Odd-Geir; Langseth, Magnus

doi:10.1016/j.ijsolstr.2004.08.019

Cited by 19 publications

(13 citation statements)

References 7 publications

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“…The aim was to illustrate how the shear test in combination with field measurements could be used to identify a given fracture criterion. However, it should be noted that the CockcroftLatham fracture criterion has been validated for different materials and used in various applications with good results [28][29][30][31].…”

Section: Comparison and Discussionmentioning

confidence: 99%

A Study of Large Plastic Deformations in Dual Phase Steel Using Digital Image Correlation and FE Analysis

et al. 2007

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Large plastic deformation in sheets made of dual phase steel DP800 is studied experimentally and numerically. Shear testing is applied to obtain large plastic strains in sheet metals without strain localisation. In the experiments, full-field displacement measurements are carried out by means of digital image correlation, and based on these measurements the strain field of the deformed specimen is calculated. In the numerical analyses, an elastoplastic constitutive model with isotropic hardening and the CockcroftLatham fracture criterion is adopted to predict the observed behaviour. The strain hardening parameters are obtained from a standard uniaxial tensile test for small and moderate strains, while the shear test is used to determine the strain hardening for large strains and to calibrate the fracture criterion. Finite Element (FE) calculations with shell and brick elements are performed using the non-linear FE code LS-DYNA. The local strains in the shear zone and the nominal shear stress-elongation characteristics obtained by experiments and FE simulations are compared, and, in general, good agreement is obtained. It is demonstrated how the strain hardening at large strains and the CockcroftLatham fracture criterion can be calibrated from the in-plane shear test with the aid of non-linear FE analyses.

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Section: Comparison and Discussionmentioning

confidence: 99%

A Study of Large Plastic Deformations in Dual Phase Steel Using Digital Image Correlation and FE Analysis

et al. 2007

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“…19, the predicted force-displacement behaviour of the components with ribs subjected to axial crushing is very close the experimentally observed behaviour. However, previous work [9] has shown that the structural behaviour can be quite accurately predicted even when a fracture criterion is not included in the simulations. This is because the components deform by global buckling in this case.…”

Section: Numerical Simulationsmentioning

confidence: 91%

“…In a previous work [9], it has been decided to model the structural behaviour of the AM60 components using a nonassociated extended J2-flow theory, due to the different types of behaviour in compression and tension. The nonassociative formulation resulted from the view of different compressive and tensile behaviour as pressure sensitivity when assuming volume constancy in the plastic domain.…”

Section: Constitutive Modelmentioning

confidence: 99%

Numerical modelling of the structural behaviour of thin-walled cast magnesium components using a through-process approach

et al. 2007

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“…Radar shell material for the AM60, it not only has good plasticity, toughness and corrosion resistance, but also a high tensile strength. It can be used in structural parts that can withstand shock loads and require high safety performance [6,7]. Table 1 is the chemical composition of AM60.…”

Section: Analysis Of Parts Structure and Materials Performancementioning

confidence: 99%

Design and Optimization of Die Casting Process for Magnesium Alloy Radar Shell Based on Numerical Simulation

Wang¹,

Su²,

Bai³

et al. 2017

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Abstract. According to the material requirements and structure characteristics of the radar shell, the different die-casting process schemes were designed preliminarily. Then, the finite element analysis software Procast was used to simulate schemes. At the same time, the best process scheme was selected by analyzing simulation results. On the basis of the selected scheme, the overflow system was added, which reduced the volume content of shrinkage porosity of the casting. Secondly, the design of the orthogonal experiment was used to optimize the scheme, and the optimal process parameters were obtained. As a result, through the actual production and application, obtaining magnesium alloy die castings of shell with excellent quality.

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Numerical modelling of the structural behaviour of thin-walled cast magnesium components

Cited by 19 publications

References 7 publications

A Study of Large Plastic Deformations in Dual Phase Steel Using Digital Image Correlation and FE Analysis

A Study of Large Plastic Deformations in Dual Phase Steel Using Digital Image Correlation and FE Analysis

Numerical modelling of the structural behaviour of thin-walled cast magnesium components using a through-process approach

Design and Optimization of Die Casting Process for Magnesium Alloy Radar Shell Based on Numerical Simulation

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