A constitutive model that describes the response of graphite/peek composite materials to high rate uniaxial deformation with resulting damage and spall fracture is presented. A nonlinear, rate-dependent description is used in conjunction with a continuum damage description of evolving delamination damage. Results of flyer plate impact experiments performed on 25 mm thick, transversely isotropic laminates are given. Comparison of measured rear-face particle velocity histories to those predicted by the theory show good agreement over a wide range of impact velocities. Computed damage profiles are compared to visual and ultrasonic observation of the post-impacted specimens.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanics of Materials