Mechanism study on ultrasonic vibration assisted drilling of Al7075-T6/Ti6Al4V laminated materials

ZHANG Yekai; WANG Dazhong; LIU Sheng; ZHU Dawei

doi:10.12299/jsues.24-0033

Volume 39 Issue 1

May 2025

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Article Navigation > Journal of Shanghai University of Engineering Science > 2025 > 39(1): 7-14

ZHANG Yekai, WANG Dazhong, LIU Sheng, ZHU Dawei. Mechanism study on ultrasonic vibration assisted drilling of Al7075-T6/Ti6Al4V laminated materials[J]. Journal of Shanghai University of Engineering Science, 2025, 39(1): 7-14. doi: 10.12299/jsues.24-0033

Citation:

ZHANG Yekai, WANG Dazhong, LIU Sheng, ZHU Dawei. Mechanism study on ultrasonic vibration assisted drilling of Al7075-T6/Ti6Al4V laminated materials[J]. Journal of Shanghai University of Engineering Science, 2025, 39(1): 7-14. doi: 10.12299/jsues.24-0033

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Mechanism study on ultrasonic vibration assisted drilling of Al7075-T6/Ti6Al4V laminated materials

doi: 10.12299/jsues.24-0033

School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China

Received Date: 2024-02-01
Publish Date: 2025-05-19

Abstract

Abstract

The ultrasonic vibration assisted drilling process of Al7075-T6/Ti6Al4V under varying rotational speeds and vibration trajectories was analyzed. The drilling process was simulated using the finite element software Deform, with detailed analysis conducted on the workpiece's drilling force, heat and delamination under vibration assisted conditions. The simulation results show that in the thermo-mechanical coupling model of titanium alloy and aluminum alloy drilling, the most significant changes in drilling force and temperature occur when comparing conventional drilling (CD), axial vibration assisted drilling (UAD), and longitudinal torsional vibration assisted drilling (EUAD) model. In terms of delamination, aluminum alloy is more prone to the thermal softening effect than titanium alloy, and the possibility of uplift delamination is greater. The bottom of titanium alloy loses support, and the possibility of pushing away delamination is also high. Ultrasonic vibration changes the force distribution of each layer, reducing the drilling force, temperature and delamination defects during the drilling process. It reveals that EUAD exhibits performance at low rotational speeds, achieving over 30% reduction in axial force, torque and temperature exceeds , whereas its effectiveness decreases by more than 20% at high speed.
- ultrasonic vibration,
- drilling,
- Al7075-T6/Ti6Al4V laminated material,
- finite element method

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References(23)

References

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