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Journal of Reinforced Plastics and Composites
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Quasi-static Simulation of Composite-laminated Shells Subjected to Low-velocity Impact

Chien-Hua Huang

Department of Engineering Science and Ocean Engineering, National Taiwan University, Taipei, Taiwan 106, Republic of China

Ya-Jung Lee

Department of Engineering Science and Ocean Engineering, National Taiwan University, Taipei, Taiwan 106, Republic of China, yjlee{at}ntu.edu.tw

This work investigates the impact behavior of carbon-epoxy composite-laminated shells with three different curvatures. For the low-velocity impact cases, a quasi-static method is introduced to reduce the need for dynamic approaches. The static crushing information (force-displacement data) of the shell is critical to the quasi-static simulation. Based on the crushing data extracted from experiments or numerical simulations, numerous dynamic impact results for distinct impactor masses and velocities can be obtained immediately from a single static result, as long as these impacts are classified as low-velocity conditions. Static experiments and simulations are always more effective than dynamic ones. This investigation concludes that the quasi-static method delivers excellent exactitude, provided the static force-displacement data, the dominator, are accurately acquired.

Key Words: composite-laminated shells • stiffness degradation • delamination propagation • low-velocity impact

Journal of Reinforced Plastics and Composites, Vol. 24, No. 7, 763-774 (2005)
DOI: 10.1177/0731684405046613
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