Modeling of As‐Cast A356 for Coupled Explicit Finite Element Analysis

Roy, Matthew; Maijer, Daan M.

doi:10.1002/9781118359259.ch63

Light Metals 2012 2012

DOI: 10.1002/9781118359259.ch63

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Modeling of As‐Cast A356 for Coupled Explicit Finite Element Analysis

Matthew Roy

Daan M. Maijer

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2015

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High-efficiency coupled solidification-thermal stress simulation of casting based on explicit finite element method

Kurosawa¹,

Nakagawa

2015

Transactions of the JSME (In Japanese)

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It is important to develop numerical prediction techniques for solidification and thermal deformation of casting, in order to clarify mechanisms of cast defects, deformation behaviors of cast itself or cracks which appear during solidification. However, non-linearity of such thermo-mechanical phenomena is extremely high, and numerical calculations for such problems often require enormous computational cost. Therefore, there is always a need for simulation method that can allow high efficient calculation on such high non-linearity problems. In this study, a coupled solidification-thermal elasto-plastic simulation model based on dynamic explicit finite element method is developed. Moreover, some numerical approaches such as mass scaling method are applied so as to improve computational efficiency. Using this model, simulation on thermal stress of casting during solidification was conducted for a simple 2D model and a relatively large 3D model of steel ingot casting. In both cases, dynamic effect due to inertia was negligible and mass scaling factor was able to be raised to the order of 10 10 without computational instability, resulting in drastic reduction of computational time. These numerical results indicate that explicit mass scaling method has significant effect on improving calculation efficiency, and such method can be a powerful tool for thermal stress simulation of casting.

show abstract

High-efficiency coupled solidification-thermal stress simulation of casting based on explicit finite element method

Kurosawa¹,

Nakagawa

2015

Transactions of the JSME (In Japanese)

View full text Add to dashboard Cite

show abstract

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Modeling of As‐Cast A356 for Coupled Explicit Finite Element Analysis

Cited by 1 publication

References 7 publications

High-efficiency coupled solidification-thermal stress simulation of casting based on explicit finite element method

High-efficiency coupled solidification-thermal stress simulation of casting based on explicit finite element method

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