TY - JOUR
T1 - Dynamic response of Advanced Placed Ply composites
AU - Kok, Rutger
AU - Peroni, Marco
AU - Martinez-Hergueta, Francisca
AU - Pellegrino, Antonio
N1 - Funding Information:
The experimental data used in this research were generated through access to the ELSA HopLab under the Framework of access to the Joint Research Centre Physical Research Infrastructures of the European Commission (CATCH project, Research Infrastructure Access Agreement Nr. 35922-1/2018-1-RD-ELSA-HopLab). This research was also supported by the Royal Society, United Kingdom (grant number RGS/R2/180091). The authors would like to acknowledge Dr. David Townsend and Dr. Karthik Ram Ramakrishnan for their contribution. The technical support of Mr. Edward Monteith is gratefully acknowledged. Finally, the authors would like to acknowledge Rolls-Royce plc for their continuous support through the Solid Mechanics University Technology Centre at the University of Oxford. For the purpose of open access, the author has applied a Creative Commons Attribution (CC BY) licence to any Author Accepted Manuscript version arising from this submission.
Funding Information:
The experimental data used in this research were generated through access to the ELSA HopLab under the Framework of access to the Joint Research Centre Physical Research Infrastructures of the European Commission (CATCH project, Research Infrastructure Access Agreement Nr. 35922-1/2018-1-RD-ELSA-HopLab). This research was also supported by the Royal Society, United Kingdom (grant number RGS/R2/180091) . The authors would like to acknowledge Dr. David Townsend and Dr. Karthik Ram Ramakrishnan for their contribution. The technical support of Mr. Edward Monteith is gratefully acknowledged. Finally, the authors would like to acknowledge Rolls-Royce plc for their continuous support through the Solid Mechanics University Technology Centre at the University of Oxford. For the purpose of open access, the author has applied a Creative Commons Attribution (CC BY) licence to any Author Accepted Manuscript version arising from this submission.
Publisher Copyright:
© 2022 The Author(s)
PY - 2023/1/1
Y1 - 2023/1/1
N2 - This work investigates the high strain rate behavior of AP-PLY composites. The large representative volume elements and brittle nature of this material necessitated the use of a bespoke split-Hopkinson bar apparatus. AP-PLY and baseline laminates were subjected to tensile loading at strain rates of 30 s−1. Results were compared with quasi-static data to evaluate whether the laminate architecture introduced any strain rate dependency. In addition, the dynamic experiments were simulated using a multiscale modeling framework, providing further insights into the micromechanisms governing material behavior. The moduli of the AP-PLY composites were found to be strain rate independent, however, strengths were found to be marginally higher than those of their baseline counterparts. At high strain rates, the strain concentrations induced by the geometry of the individual tapes at through thickness undulations and tow boundaries were less significant due to reduced out-of-plane tow straightening and delamination. As a result, no reduction in AP-PLY strength in comparison to the baseline laminates was obtained. These differences in deformation micromechanisms led to an improvement of the damage tolerance when subjected to dynamic loading.
AB - This work investigates the high strain rate behavior of AP-PLY composites. The large representative volume elements and brittle nature of this material necessitated the use of a bespoke split-Hopkinson bar apparatus. AP-PLY and baseline laminates were subjected to tensile loading at strain rates of 30 s−1. Results were compared with quasi-static data to evaluate whether the laminate architecture introduced any strain rate dependency. In addition, the dynamic experiments were simulated using a multiscale modeling framework, providing further insights into the micromechanisms governing material behavior. The moduli of the AP-PLY composites were found to be strain rate independent, however, strengths were found to be marginally higher than those of their baseline counterparts. At high strain rates, the strain concentrations induced by the geometry of the individual tapes at through thickness undulations and tow boundaries were less significant due to reduced out-of-plane tow straightening and delamination. As a result, no reduction in AP-PLY strength in comparison to the baseline laminates was obtained. These differences in deformation micromechanisms led to an improvement of the damage tolerance when subjected to dynamic loading.
KW - 3-Dimensional reinforcement
KW - Automated fiber placement lay-up
KW - Computational modeling
KW - Impact behavior
U2 - 10.1016/j.compositesb.2022.110347
DO - 10.1016/j.compositesb.2022.110347
M3 - Article
SN - 1359-8368
VL - 248
JO - Composites part b-Engineering
JF - Composites part b-Engineering
M1 - 110347
ER -