Composites Optimization and Analysis in Space Launch Vehicles: United Launch Alliance (ULA) Utilizes Free Size Optimization for a Doubler Repair of a Gouge Type Defect
May 27, 2014
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Presented By:
Doublers are commonly used in launch vehicles to repair composite sandwich facesheet defects,
such as gouges or depressions, because they locally increase the strength of the facesheet in the
area of the repair. Although doublers can be of a different material than the facesheets, they
often have comparable strength and stiffness. Therefore, the doubler’s influence on the overall
extensional and bending stiffness of the sandwich can be significant. ULA explored the use of
OptiStruct, HyperWorks’ structural optimization and analysis solver, to optimize the size and
shape of a composite doubler to minimize the stresses.
Participants will learn:
• Concept design synthesis for composites
• Modeling and analysis of laminated structures
• Size & shape optimization of composite sandwich structures
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