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Process-Induced Deformations on Composite L-Shaped Part: Numerical Prediction and Compensated Mould Design

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Abstract:

This work investigates the formation and control of residual deformations in composite L-shaped parts manufactured by autoclave curing. An experimental study is first conducted to characterize spring-in for different stacking sequences. Dimensional measurements are performed using stereo digital image correlation to quantify spring-in and to assess the presence of warpage along the flanges. A numerical study is then carried out to develop a simulation method for process-induced deformation prediction. The influence of the main mechanisms involved is analyzed, and a modeling strategy for the tool-part interaction is proposed. Finally, compensated mould design is addressed. The convergence of the optimization problem is investigated, and an optimized mold geometry is determined for each part considered in this study.

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Periodical:

Materials Science Forum (Volume 1182)

Pages:

83-90

DOI:

https://doi.org/10.4028/p-JwxQ3e

Citation:

Cite this paper

Online since:

April 2026

Authors:

Elias Delsol, Philippe Olivier*, Bruno Castanié, Wiyao Azoti, Leon Ratsifandrihana

Keywords:

Compensated Mould Design, Process Induced Deformations, Spring-In, Warpage

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Creative Commons CC BY 4.0

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* - Corresponding Author

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