Analytical model of the contact interaction between the components of a special percussive mechanism for planetary exploration

Vila, Luis J.; Malla, Ramesh B.

doi:10.1016/j.actaastro.2015.09.016

Cited by 16 publications

(3 citation statements)

References 16 publications

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“…For the free mass and drill rod, the velocity of free mass and drill rod can be obtained after collision by using momentum conservation and introducing restitution coefficient [28][29][30] , then we get…”

Section: Design Of Spring Mass Systemmentioning

confidence: 99%

“…The traditional rotary drilling technology is difficult to operate in a weak gravitational environment and hard rock formations due to problems such as high-required axial force, continuous holding torque, high power consumption, large mass, inability to circulate effectively, and severe wear of the drill bit [5][6][7] . In order to better realize the efficient sampling of hard objects of extraterrestrial celestial rocks, domestic and foreign scholars and institutions have carried out a lot of research on extraterrestrial rock sampling technology, including projectile sputtering sampling technology [8][9][10] , cutting sampling technology 11 , impact and coring sampling technology [12][13], pneumatic sampling technology 14 , impact and ultrasonic vibration drilling sampling technology [15][16][17][18][19][20][21][22][23][24][25][26][27][28] , etc. Among them, the impact and ultrasonic vibration drilling sampling technology has the characteristics of simple structure, low power consumption, small-required axial force, strong controllability and strong adaptability 15 .…”

Section: Introductionmentioning

confidence: 99%

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Design of high-frequency and micro-amplitude impactor suitable for extraterrestrial rock sampling

Zhang

Yu²,

Zhang³

et al. 2022

2nd International Conference on Artificial Intelligence, Automation, and High-Performance Computing (AIAHPC 2022)

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The traditional rotary drilling technology has the problems of high-required axial force, high power consumption, large mass and serious wear of the drill bit. It is difficult to be better applied in the detection of extraterrestrial celestial bodies with weak gravitational environment and hard rock layers. The high-frequency micro-amplitude impactor can greatly reduce the drilling pressure and power consumption by using high-frequency impact to drill objects with high hardness such as rocks. Therefore, based on the piezoelectric transducer, a high-frequency micro-amplitude impactor is designed by analyzing the configuration of the horn and the collision system of the spring-mass system. It is verified that the no-load frequency of the impactor is above 1000Hz, and that the amplitude is about 0.2mm. Finally, the validity of the design of the high-frequency and micro-amplitude impactor is verified by the sandstone-drilling experiment.

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Section: Design Of Spring Mass Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of high-frequency and micro-amplitude impactor suitable for extraterrestrial rock sampling

Zhang

Yu²,

Zhang³

et al. 2022

2nd International Conference on Artificial Intelligence, Automation, and High-Performance Computing (AIAHPC 2022)

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show abstract

“…However, there is lack of experiments to validate the collision model. Based on the paper of [21], a drill rod is assumed to be consolidated with rock, solid body collision is used to analyze ultrasonic horn and free mass, and free mass and drill rod impact process, and the drill rod model for both undamped and damped states is discussed. And a spherical mass is studied only through experiment by the study of [22].…”

Section: Introductionmentioning

confidence: 99%

Impact Dynamics of a Percussive System Based on Rotary-Percussive Ultrasonic Drill

Wang

Quan

et al. 2017

Shock and Vibration

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This paper presents an impact dynamic analysis of a percussive system based on rotary-percussive ultrasonic drill (RPUD). The RPUD employs vibrations on two sides of one single piezoelectric stack to achieve rotary-percussive motion, which improves drilling efficiency. The RPUD's percussive system is composed of a percussive horn, a free mass, and a drill tool. The percussive horn enlarges longitudinal vibration from piezoelectric stack and delivers the vibration to the drill tool through the free mass, which forms the percussive motion. Based on the theory of conservation of momentum and Newton's impact law, collision process of the percussive system under no-load condition is analyzed to establish the collision model between the percussive horn, the free mass, and the drill tool. The collision model shows that free mass transfers high-frequency small-amplitude vibration of percussive horn into low-frequency large-amplitude vibration of drill tool through impact. As an important parameter of free mass, the greater the weight of the free mass, the higher the kinetic energy obtained by drill tool after collision. High-speed camera system and drilling experiments are employed to validate the inference results of collision model by using a prototype of the RPUD.

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Drilling Mechanisms Using Piezoelectric Actuators Developed at Jet Propulsion Laboratory

et al. 2018

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Analytical model of the contact interaction between the components of a special percussive mechanism for planetary exploration

Cited by 16 publications

References 16 publications

Design of high-frequency and micro-amplitude impactor suitable for extraterrestrial rock sampling

Design of high-frequency and micro-amplitude impactor suitable for extraterrestrial rock sampling

Impact Dynamics of a Percussive System Based on Rotary-Percussive Ultrasonic Drill

Drilling Mechanisms Using Piezoelectric Actuators Developed at Jet Propulsion Laboratory

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