Filament Winding (FW)
Product Highlights:
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Supports design and analysis of composite over-wrapped pressure
vessels (COPVs). GENOA-FW combines advanced composite mechanics with a special
module for filament winding analysis.
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Allows to perform Low Fidelity Winding Optimization for given
tank dimensions and fiber/matrix material properties considering the loads and
stiffness. The outcome is recommended number of hoop/helical windings,
thickness of each ply, estimated burst pressure, total composite weight after
winding, and more.
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Allows to perform High Fidelity Winding Optimization for given
tank dimensions and fiber/matrix material properties considering the loads and
stiffness. The High Fidelity data is more precise than the Low Fidelity data
and requires more computational time.
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Enables duplicating the manufacturing process by generating the
correct tape schedule at each location on the COPV FEM model and calculating
residual stresses caused by the filament winding process.
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Handles HOOP and HELICAL wrapping techniques. The winding angle,
overlap, and number of circuits determine whether the wrapping covers the whole
surface without gaps/voids.
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Permits to model variable thickness metallic liner, import
external tank models, generate bonded and un-bonded liner for COPVs.
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Input includes COPV geometry, desired ply schedule, material
properties for each ply as well as parameters, which are specific to the
filament winding process. Geometry can be provided as an FEM model or as
geometrical data (cylinder length and radius, dome type, etc.) sufficient for
generating the FEM model. Ply schedules define sets of plies with ply wrapping
type (HOOP, HELICAL), angle, material, tension, etc. for each ply. Material
properties are defined by fiber/matrix Id's in GENOA-PFA's material databank,
fiber volume ratio (FVR), and other parameters.
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Outputs the node/element ply schedules (including orientations,
materials, and thickness) and internal stress distribution, which depends on
the geometry, loads, material properties, environment and filament winding
process.
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Generated information can be included in the Progressive Failure
Analysis of a COPV design. PFA allows simulating complete certification process
(burst pressure analysis, loading unloading, fatigue life assessment, impact
analysis, and more).
Applications/Benefits:
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Design of filament wound pressure vessels for defense, automotive
and aerospace applications.
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Predicts failure location and corresponding load.
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Permits to create design configurations with increased durability
and damage tolerance.
   
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