A Method for Calculating Process-Induced Stresses to Prevent Warping of Products of Composite Materials

• Published in: Journal of machinery manufacture and reliability Vol. 50; no. 2; pp. 133 - 142
• Main Authors: Shabalin, L. P., Puzyretskii, E. A., Sidorov, I. N., Girfanov, A. M.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-03-2021; Springer Nature B.V
• Subjects: Composite materials; Engineering; Machines; Manufacturing; Model accuracy; Molding (process); Polymer matrix composites; Polymers; Predictions; Processes; Reliability; Residual stress; Strength; Warpage; Warping; Wear Resistance of Machines and Structures; warpage; method; curing; composite material; warping; predictive tooling; residual stresses
• ISSN: 1052-6188; 1934-9394
• DOI: 10.3103/S1052618821020126

The problem of residual stresses that arise during the curing of products of polymer composite materials and cause warping (warpage) is considered. A calculation model is proposed that allows for the prediction of residual strains and design of predictive molding tools. The approach developed ensures a high accuracy of manufacturing articles of polymer composite materials. The influence of the model parameters on the accuracy of the results has been analyzed.