期刊
COMPOSITE STRUCTURES
卷 276, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2021.114533
关键词
Variable angle tow (VAT) laminates; Low velocity impact modelling; Non-linear plate dynamics; Ritz method; First-order shear deformation theory; Von Karman approximation
资金
- Italian Ministry of University and Research -MUR -through the project DEVISU under the scheme PRIN-2107 [22017ZX9X4K006]
This study introduces a formulation for analyzing impact-induced dynamics in VAT laminated plates, which is implemented and tested. The method utilizes first order shear deformation kinematics and von Karman non-linear strains to develop a discrete system with an impact loading model and an algorithm for solving non-linear governing equations.
Variable angle tow (VAT) laminates feature composite layers reinforced by fibres following continuous curved paths and offer a wide structural design space for the manufacturing of composite components. In this work, a formulation for the analysis of the impact-induced dynamics in VAT laminated plates is proposed, implemented and tested in this work. The method is based on the adoption of first order shear deformation kinematics and includes von Karman non-linear strains. The discrete system is obtained by employing a pb-2 Ritz series expansion into the Hamilton's variational statement, while the impact loading is modelled through Hertzian contact law. The resulting non-linear governing equations are solved using a Newmark time step integration algorithm, coupled with an iterative solution strategy. After validation against available literature data, several tests on different VAT configurations are performed, highlighting analogies and differences between different layups in terms of impact-induced dynamic response.
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