Publications Details

Determination of ballistic limit of skin-stringer panels using nonlinear, strain-rate dependent peridynamics

Cuenca, Fernando; Weckner, Olaf; Silling, Stewart A.; Rassaian, Mostafa

Significant testing is required to design and certify primary aircraft structures subject to High Energy Dynamic Impact (HEDI) events; current work under the NASA Advanced Composites Consortium (ACC) HEDI Project seeks to determine the state-of-the-art of dynamic fracture simulations for composite structures in these events. This paper discusses one of three Progressive Damage Analysis (PDA) methods selected for the second phase of the NASA ACC project: peridynamics, through its implementation in EMU. A brief discussion of peridynamic theory is provided, including the effects of nonlinearity and strain rate dependence of the matrix followed by a blind prediction and test-analysis correlation for ballistic impact testing performed for configured skin-stringer panels.