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Proceedings of CAD'15, 2015, 210-215
Interface Management for Automating Finite Element Analysis Workflows

Christopher M. Tierney, Trevor T. Robinson, Cecil G. Armstrong, Queens University Belfast

Abstract. Solving computational analysis problems requires a fit-for-purpose finite element mesh to be generated, usually on idealized analysis geometry, along with the application of any applicable analysis attributes such as boundary conditions, loading and material properties. Geometric interface definitions in multi-component assembly models describe the connectivity between adjacent components. In FEA assemblies any explicit interface definitions are translated to appropriate boundary and contact conditions to capture the physical and mechanical properties to be transferred between components. The manual effort required to define boundary conditions becomes repetitive and does not add value during multiple design changes through the product development, where validating and updating the assembly feature interfaces becomes necessary to maintain the integrity of the analysis model. Solutions are needed to automatically identify these interface transformations and to determine the subsequent decisions on how they shall be treated in order to generate a valid analysis model. For example, where a shell meshed region meets a solid meshed region, multi-point constraint equations (MPCs) can be used to connect the meshes or constraints can be applied to achieve mesh conformity at the interface.

Keywords. Interface management, Cellular modelling, Virtual topology, Equivalencing, Idealization, Decomposition

DOI: 10.14733/cadconfP.2015.210-215