An Ordinary State-Based Peridynamic Model of Unidirectional Carbon Fiber Reinforced Polymer Material in the Cutting...

Area of Science:

• Materials Science
• Mechanical Engineering
• Computational Mechanics

Background:

• Analyzing material failure in carbon fiber reinforced polymers (CFRP) is challenging due to their complex composite structure, especially during machining.
• Peridynamic theory offers a novel approach to solid mechanics, adept at handling discontinuities inherent in material failure analysis.

Purpose of the Study:

• To develop and present an Ordinary State-Based Peridynamic (OSB-PD) model for simulating the cutting process of unidirectional CFRP.
• To address limitations in classical peridynamic laminate methods by incorporating angle tolerance.
• To validate the model's capability in predicting machining-induced damage and cutting forces.

Main Methods:

• An Ordinary State-Based Peridynamic (OSB-PD) model was formulated for unidirectional CFRP.
• Angle tolerance was implemented to overcome fiber angle limitations in peridynamic laminate analysis.
• A short-range force approach was employed to simulate the interaction between the cutting tool and the CFRP workpiece.

Main Results:

• The OSB-PD model successfully simulated the material failure process of CFRP during machining.
• The model demonstrated accuracy in predicting both machined surface damage and cutting forces.
• Validation was achieved through comparison with experimental tension and cutting test data.

Conclusions:

• The developed OSB-PD model is effective for analyzing discontinuities in CFRP during machining.
• The model provides a reliable tool for predicting surface damage and cutting forces in CFRP machining applications.
• This research validates the utility of peridynamic theory in understanding complex composite material behavior under machining conditions.