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Research on Delamination Damage Factor of Hole-Making Process Optimization Based on Carbon Fiber Composite Materials
Linsheng Liu1, Yushu Lai1, Yiwei Zhang1,2
1School of Mechanical Engineering, Chongqing Three Gorges University, Chongqing 404100, China.
Variable parameter drilling significantly reduces delamination damage in carbon fiber reinforced polymer (CFRP) by optimizing spindle speed and feed rate. This method enhances drilling quality and processing efficiency for advanced manufacturing.
Area of Science:
- Materials Science
- Manufacturing Engineering
- Mechanical Engineering
Background:
- Drilling carbon fiber reinforced polymer (CFRP) often results in delamination damage, compromising processing quality.
- Traditional fixed parameter drilling methods struggle to mitigate this issue effectively.
Purpose of the Study:
- To investigate the influence of cutting parameters on delamination damage in CFRP drilling.
- To develop and validate a variable parameter drilling strategy for improved hole-making quality and efficiency.
Main Methods:
- Construction of anisotropic constitutive and Hashin failure models for CFRP.
- Finite element analysis using ABAQUS and VUMAT subroutines to simulate drilling processes.
- Comparative simulation and experimental validation of fixed versus variable parameter drilling.
- Genetic algorithm optimization for spindle speed and feed rate in variable parameter drilling.
Main Results:
- Delamination damage factor increases with feed rate at constant spindle speed.
- Delamination damage factor shows a nonlinear relationship with spindle speed at constant feed rate.
- Variable parameter drilling, particularly "first high feed, then low feed," significantly reduces delamination.
- Optimized parameters balance drilling quality and processing efficiency.
Conclusions:
- Variable parameter drilling offers a superior approach to controlling delamination in CFRP.
- Optimized drilling parameters provide a viable solution for enhancing CFRP processing in aerospace and intelligent manufacturing.
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