Study of Composite Pressure Vessel using Workbench and APDL Andrés Liberatto Eduardo Araujo PRESENTATION TOPICS • Motivation • Geometry – simplification • Modeling – Choice of elements – Meshing Strategy – Lay-up Definition and Element Orientation – Boundary Conditions • Post Processing Motivation • This study was performed with the company CENIC and present the modeling sequence of a typical pressure vessel fabricated with filament winding process. • Geometry, data material were provided by CENIC. • To use the resources available in Ansys 14.0 Workbench and APDL CENIC Geometry – Step geometry file was provided – Ansys imports step file Geometry - simplification • Some components were neglected for this study – Fasteners – Anchoring Holes – Coupling Rings – O-rings • All other components were divided (cut) to allow the user to use good meshing strategy. – To divide by 4 parts in longitudinal directon – To divide by 3 parts in transversal direction • Sweep mesh. At least 2 elements through thickness – Only brick element. Transition elements are wedges. Geometry - simplification • Why should one use bricks? • Composites (laminated) elements demand controlled mesh and brick solid elements. Geometry – after simplification Modeling- Element Choice Modeling – Meshing strategy • Ansys 14.0 • Standard resources of Workbench plus APDL