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Analysis with LUSAS HPM
A coupled thermal-mechanical analysis
is carried out in LUSAS to model thermal curing and calculation of
residual stress. The temperature and degree of cure throughout the
manufacturing process caused by the internal heat generation during
cure is calculated using a transient thermal analysis. This data is
then passed to a transient nonlinear stress analysis to compute the
deformations due to temperature change and chemical shrinkage. Results
are viewed in LUSAS HPM where displacements from the stress analysis
can be factored to provide updated tool geometry. The revised tooling
geometry calculated by the LUSAS HPM software can be exported in IGES
format for use directly in the CNC tool cutting environment and will,
in turn, produce a part that will cure into the correct shape for
intended assembly purposes.
Third-party interfaces
Linking of LUSAS HPM with CATIA
Composites Design is possible via Simulayt’s Composites
Link product.
Benefits in using
LUSAS HPM
By using LUSAS HPM software in the
design process competent design engineers can now extract master model
and tooling surfaces "right first time" ensuring that
correctly sized post-cure components are obtained without iterative
guesswork. As a result the product development cycle is significantly
improved. With the use of accurately calculated master and tooling
surfaces it is anticipated that the cost and time required to assemble
composite components could be greatly reduced. The ability to build
composite components accurately will also enable larger components to
be manufactured, reducing the part count and provide further savings
in manufacturing costs.
"The revised tooling geometry
calculated by the LUSAS High Precision Moulding software can be
exported in IGES format for use directly in the CNC tool cutting
environment and will, in turn, produce a part that will cure into the
correct shape for intended assembly purposes."
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