Transactions of Nanjing University of Aeronautics & Astronautics
Determination of Key Cohesive Zone Model’s Parameters for Orthotropic Paper and Its Static Fracture Simulation
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Abstract:
Investigation of paper cutting process is vital for the design of cutting tools， but the fracture mechanism of paper cutting is still unclear. Here， we focus on the cutting process of paper， including the key parameters of cohesive zone model （CZM） for the orthotropic paper， to simulate the shear fracture process. Firstly， the material constants of the orthotropic paper are determined by longitudinal and transverse tensile test. Secondly， based on the tensile stress-strain curves， combined with damage theory and numerical simulations， the key parameters of the CZM for the orthotropic paper are obtained. Finally， a model III fracture is simulated to verify the accuracy of the model. Results show that the load-displacement curves obtained by the simulation is consistent with the test results.
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This work was supported by the National Natural Science Foundation of China （No?. 11702147）.
Clc Number:
O346.1
CHINA AERO-SCIENCES
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