Friction Property of Impact Sliding Contact under Vacuum and Microgravity

Tong, Ruiting; Li, Geng

doi:10.1007/s12217-018-9667-9

Cited by 10 publications

(3 citation statements)

References 48 publications

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“…The gravitational field is not present in the space which is the cause of weightlessness and creates a lot of trouble for the astronauts and the fluid systems [20]. The vibrations and impact loads produced during launch and landing can cause damage to the shuttle or satellites, other than these forces acoustics loads are also generated due to high noise of 170-180 decibel range.…”

Section: Challenges In Spacementioning

confidence: 99%

The state of art on lubrication methods in space environment

Nautiyal,

Singh,

Gautam

et al. 2024

Phys. Scr.

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Space tribology is a very big aspect of space exploration, despite of this fact, there is a dearth of coherent and concise literature available in the field of space tribology. It becomes difficult to understand the tribological behaviour of mating bodies under the extreme environmental circumstances in space due to their potential chemical and physical interactions. The radiation, vacuum, environmental conditions and temperature, are the factors which affects the friction and wear behaviour of mating surfaces and may alter the chemical structure of solid or liquid lubricant. The combination of tribo-physical and tribo-chemical interactions makes the tribological analysis very difficult to understand. The lack of understanding and ignorance might be the reason for not addressing this issue in the past. This review contains the qualitative and quantitative information on the tribological behaviour of different types of liquid lubricants, greases, soft and hard coatings, combined lubrication systems, testing equipment, composites, solid lubricants and alloys developed for space applications.

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Section: Challenges In Spacementioning

confidence: 99%

The state of art on lubrication methods in space environment

Nautiyal,

Singh,

Gautam

et al. 2024

Phys. Scr.

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“…2. Adhesion at the interface of the contact bodies [20] Generally, the adhesive pressure p A is assumed as a function of separation z between the two contact surfaces, and it follows the law derived from the Lennard-Jones (L-J) potential 3 9…”

Section: Adhesive Force Modelmentioning

confidence: 99%

“…To realize movement or power transmission, the motion of the mechanical mechanism is necessary, and the clearance is evitable. For a clearance joint, even a small clearance can produce an obvious influence on the dynamic characteristics, wear and lifetime of mechanical systems [1][2], and the impact will greatly influence the friction properties [3].…”

Section: Introductionmentioning

confidence: 99%

A new impact dynamics model of a clearance joint considering the adhesive effects in space environment

Tong

Quan²,

Wan

et al. 2020

MATEC Web Conf.

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In space environment, there is severe adhesive effect, and the impact contact process shows different phenomenon due to the adhesive forces. In this paper, a new impact dynamics model of a clearance joint is developed considering the adhesive effects. The Hertz contact model, L-J potential and Dugdale model are combined, and an adhesive force term is included in the original hybrid contact force model. Taking a clearance joint as an example, the theory of adhesive forces during the impact contact process is given, and the influence of the adhesive forces is investigated. Negative forces are discovered at the beginning of the contact, and the contact forces of the modified model are higher than the hybrid model. Besides, the indentation depth is also higher than the hybrid model. The energy conservation principle is employed to explain the phenomena, and the contact forces will be underestimated if the adhesive effects are ignored. This work could be contributed to estimating the contact forces and friction forces more reasonablely in the space environment.

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Contact mechanics for dynamical systems: a comprehensive review

Flores

2021

Multibody Syst Dyn

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Friction Property of Impact Sliding Contact under Vacuum and Microgravity

Cited by 10 publications

References 48 publications

The state of art on lubrication methods in space environment

The state of art on lubrication methods in space environment

A new impact dynamics model of a clearance joint considering the adhesive effects in space environment

Contact mechanics for dynamical systems: a comprehensive review

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