Numerical analysis of the damage behavior of an aluminum/CFRP hybrid beam under three point bending

The FEA showed that stress was concentrated at the edges under the loading nose. It was observed that the lay-up sequence of the laminates strongly influenced the performance. At low bending loading, failure of CFRP and delamination over a small area just below the loading nose occurred. As the load increased, the interface between aluminum and CFRP was debonded. Plastic buckling of aluminum and bending collapse behavior of the hybrid beam then occurred upon further loading. Overall performance of the hybrid beam represented by load-displacement curves with respect to the stacking sequence of the laminate was compared with experimental results. The FEA showed good agreement with the experimental results.