Simulation of Drop-Weight Impact Test on Composite Laminates using Finite Element Method

2019-01-01
Bozkurt, Mirac Onur
Parnas, Kemal Levend
Çöker, Demirkan
This study presents the simulation of standard drop-weight impact test on a [0/90/0]s composite laminate. For this purpose, a three-dimensional virtual test setup is developed in ABAQUS/Explicit finite element tool. Hemispherical impactor and specimen fixture are modeled as rigid bodies. Composite plate is modeled as a 3-D deformable solid and discretized using a biased mesh for computational efficiency. For simulation of ply damage in the composite laminate, a continuum damage mechanics based damage model is developed and implemented into the analysis via a user-written subroutine VUMAT. Delamination damage is simulated by inserting cohesive elements at the interfaces of plies having different orientations. Results show that the initial failure mechanism in the 3-D low-velocity impact event is the matrix cracking in the lowermost plies independent from the stacking sequence of the laminate. Furthermore, the simulation accurately predict that delaminated regions expand mainly in the same direction as of the fibers of the lower adjacent layer in accordance with the bending stiffness mismatching concept.
Procedia Structural Integrity

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Citation Formats
M. O. Bozkurt, K. L. Parnas, and D. Çöker, “Simulation of Drop-Weight Impact Test on Composite Laminates using Finite Element Method,” Procedia Structural Integrity, pp. 206–214, 2019, Accessed: 00, 2021. [Online]. Available: https://linkinghub.elsevier.com/retrieve/pii/S2452321619305773.