Numerical simulation of plastic deformation and mechanical response of strip rolled aluminium alloys

Jansen van Rensburg, Gerhardus JBogaers, Alfred EJ2018-11-272018-11-272018-10Jansen van Rensburg, G.J. and Bogaers, A.E.J. 2018. Numerical simulation of plastic deformation and mechanical response of strip rolled aluminium alloys. Conference of the South African Advanced Materials Initiative (CoSAAMI-2018), 23-26 October 2018, Riverside Sun, Vanderbijlpark, South Africa1757-899X1757-8981doi:10.1088/1757-899X/430/1/012025http://iopscience.iop.org/article/10.1088/1757-899X/430/1/012025http://iopscience.iop.org/article/10.1088/1757-899X/430/1/012025/pdfhttp://hdl.handle.net/10204/10540Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licenceDuring the optimal design and simulation of machining or forming processes, detailed simulation of structural response is typically required for use in Finite Element Analysis (FEA). In this study, the bulk temperature and rate dependent resistance to deformation of strip formed aluminium alloys is modelled using the Mechanical Threshold Stress model. The model is characterised to AA5182 alloy data and used in the FEA simulation of a strip rolling process. The effects of element choice, dynamic or quasi-static simulations and the use of particular modelling algorithms on the computational cost and overall accuracy associated with each simulation have to be considered. Given the correctly implemented material tangent, an implicit analysis is illustrated to allow larger stable time-steps. Dynamic and quasi-static solutions are very similar for the simulated process meaning inertia effects are negligible. It is further demonstrated that great care be given to the maximum allowable time step size in order to capture the expected interaction between temporal and spatial discretisation in a fully Lagrangian FEA simulation.enAluminium Strip RollingAA5182Finite Element AnalysisMechanical Threshold StressNumerical simulation of plastic deformation and mechanical response of strip rolled aluminium alloysConference PresentationJansen van Rensburg, G. J., & Bogaers, A. E. (2018). Numerical simulation of plastic deformation and mechanical response of strip rolled aluminium alloys. IOP Publishing. http://hdl.handle.net/10204/10540Jansen van Rensburg, Gerhardus J, and Alfred EJ Bogaers. "Numerical simulation of plastic deformation and mechanical response of strip rolled aluminium alloys." (2018): http://hdl.handle.net/10204/10540Jansen van Rensburg GJ, Bogaers AE, Numerical simulation of plastic deformation and mechanical response of strip rolled aluminium alloys; IOP Publishing; 2018. http://hdl.handle.net/10204/10540 .TY - Conference Presentation AU - Jansen van Rensburg, Gerhardus J AU - Bogaers, Alfred EJ AB - During the optimal design and simulation of machining or forming processes, detailed simulation of structural response is typically required for use in Finite Element Analysis (FEA). In this study, the bulk temperature and rate dependent resistance to deformation of strip formed aluminium alloys is modelled using the Mechanical Threshold Stress model. The model is characterised to AA5182 alloy data and used in the FEA simulation of a strip rolling process. The effects of element choice, dynamic or quasi-static simulations and the use of particular modelling algorithms on the computational cost and overall accuracy associated with each simulation have to be considered. Given the correctly implemented material tangent, an implicit analysis is illustrated to allow larger stable time-steps. Dynamic and quasi-static solutions are very similar for the simulated process meaning inertia effects are negligible. It is further demonstrated that great care be given to the maximum allowable time step size in order to capture the expected interaction between temporal and spatial discretisation in a fully Lagrangian FEA simulation. DA - 2018-10 DB - ResearchSpace DP - CSIR KW - Aluminium Strip Rolling KW - AA5182 KW - Finite Element Analysis KW - Mechanical Threshold Stress LK - https://researchspace.csir.co.za PY - 2018 SM - 1757-899X SM - 1757-8981 T1 - Numerical simulation of plastic deformation and mechanical response of strip rolled aluminium alloys TI - Numerical simulation of plastic deformation and mechanical response of strip rolled aluminium alloys UR - http://hdl.handle.net/10204/10540 ER -