Design Verification and Finite Element Analysis (FEA)
Modern computers provide a means of approximating solutions through numerical techniques, with Finite Element Analysis being the most common approach. A geometry of arbitrary complexity is spatially discretised by creating a mesh over which the quantities of interest are solved. Boundary conditions are applied which constrain the solution, such as the application of a specified torque to an axle or fix at a structural anchor, for example. The solution accuracy depends on both an arbitrary numerical convergence criterion and mesh density, factors which Xi engineers are experienced in judging. Stress concentrations in structures and no-slip boundaries at the surface of fluid flows are examples of where mesh refinement is often necessary.
COMSOL Multiphysics is the principal FEA modelling package used by Xi, for which Xi are certified consultants and recognised internationally. It provides a true multiphysics environment with the ability to fully couple different physical phenomena and simulate complex behaviours. Common couplings with relevance to industrial infrastructure include fluid-structural and structural-acoustic interactions. Multibody dynamics may be incorporated to model mechanical assemblies accurately with the ability to account for frictional losses and other imperfections. Combined with Xi’s experience in noise and vibration measurement we offer a comprehensive solution.