Numerical Simulation on Stress Distribution and Failure of Composites Holes with Cold Expansion

Abstract:

A numerical investigation was conducted to apply cold expansion methods on composites structures under the guidance of cold expansion techniques of metal materials and interference-fit techniques of composites structures. Finite element expansion models with sleeves or without sleeves are established to study the stress distributions and failure conditions around cold expanded holes with different expansion values (0.5%, 1% and 1.5%). Results show that no damage occurs with expansion value 0.5% and using a sleeve in the expansion process can cause uniform stress distributions.

• Periodical: Materials Science Forum (Volume 770)
• Pages: 221-225
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.770.221
• Online since: October 2013
• Authors: Yuan Qing Cheng, Hong Hua Su, Yu Can Fu, En De Ge
• Keywords: Cold Expansion, Failure Condition, Finite Element, Stress Distribution

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