Study of Composite Pressure Vessel using Workbench and APDL

46 Pages·2013·4.37 MB·English

by  Bernard Patury

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