Shear Fracture Model of Ultrasonic Cutting for an Aramid Paper Honeycomb

摘要

Ultrasonic cutting of an aramid paper honeycomb was studied using a simulation approach, which is quite instrumental for research of its mechanism and optimization of process parameters. The constitutive material model was constructed based on the mechanical properties of orthogonal isotropic aramid paper and the shear fracture model was built to describe the failure mode of a honeycomb during ultrasonic cutting to substantiate the reliability of simulation results. Simulation and full-scale triangular blade cutting experiments were comparatively evaluated. With an appropriate choice of the parameters, the deformation damage of the honeycomb material in simulation cutting does basically coincide with the experiment. A maximum error for the average cutting force is only 5.42%. The above results corroborate the accuracy of the model.