Modeling and computer simulation of ultrasonic/sonic driller/corer (USDC)

Area of Science:

• Planetary Science
• Mechanical Engineering
• Materials Science

Background:

• The NASA planetary exploration program requires advanced in-situ rock sampling tools.
• Conventional modeling approaches are unsuitable for optimizing novel drilling mechanisms like the USDC.

Purpose of the Study:

• To develop and validate simulation models for the ultrasonic/sonic drill/corer (USDC).
• To analyze the novel drive mechanism of the USDC for optimization studies.

Main Methods:

• Developed analytical and numerical models for the USDC's components and interactions.
• Created a simplified integrated model using tabulated data for efficient simulation.
• Validated the model with experimental data.

Main Results:

• The simplified integrated model successfully simulated USDC operation on a desktop PC.
• The model accurately predicted device characteristics under various conditions.
• Analysis explored the novel drive mechanism involving piezoelectric actuators and a free-mass.

Conclusions:

• The developed simplified model is suitable for USDC optimization studies.
• This simulation approach enables efficient design and performance prediction for planetary exploration tools.