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Contact Mechanics and Elastomer Friction of Materials
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Contact Mechanics and Elastomer Friction of Materials

A special issue of Materials (ISSN 1996-1944).

Deadline for manuscript submissions: closed (15 October 2017) | Viewed by 19091

Special Issue Editor

Prof. Dr. -Ing. Jorg Wallaschek

E-Mail Website
Guest Editor
Institute of Dynamics and Vibration Research, Leibniz University Hannover, 30167 Hannover, Germany
Interests: piezoelectric systems and ultrasonic technologies; automotive engineering (in particular NVH and acoustics); contact mechanics and friction; nonlinear oscillations; rotor dynamics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue addresses “Contact Mechanics and Elastomer Friction”. Recent advances in modeling and simulation, as well as in surface coatings and other technologies, are fundamental for the development of new devices and mechanisms, and also for the advancement of already-established products. Three important fields are of particular interest: 1) Tire/road friction, where numerous design trade-offs have to be made, including criteria such as rolling-resistance, grip, and wear; 2) seals, where novel surface coating technologies are used to control friction characteristics; and 3) contact interfaces in friction drives, such as the travelling wave motor, where the function of the system strongly depends on the contact mechanics of the two partners.

It is my pleasure to invite you to submit a manuscript for this Special Issue. We are particularly interested in contributions concentrating on the role of materials. Often, very specific and particular material properties, of one or both of the contact partners, have a dominant influence on overall system behavior, such as ice and snow in the tire/road contact, surface coatings in seal system wear and friction, or temperature dependent behavior in friction drives.

Another field of primary interest is the non-stationary behavior of many systems with elastomer friction. Modeling of run-in behavior and the role of prior history of a friction contact on its actual behavior have become hot topics in fundamental research on contact mechanics and elastomer friction.

Contributions concentrating on computational aspects and contributions focused on experimental techniques are equally appreciated. Full papers, communications, and reviews are all welcome.

Prof. Dr.-Ing. Jorg Wallaschek
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Tire/road friction
  • Seals
  • Friction drives, ultrasonic motors
  • Surface coatings
  • Third Body layers
  • Non-stationary friction behavior, run-in processes

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Published Papers (3 papers)

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Research

4667 KiB  
Article
Microstructure, Mechanical and Tribological Properties of Oxide Dispersion Strengthened High-Entropy Alloys
by Xinyu Liu, Hangboce Yin and Yi Xu
Materials 2017, 10(11), 1312; https://doi.org/10.3390/ma10111312 - 15 Nov 2017
Cited by 59 | Viewed by 5691
Abstract
A novel metal matrix composite CrMnFeCoNi with Y2O3 as reinforcement phase was designed and manufactured by mechanical alloying and spark plasma sintering. After sintering at 900 °C for 5 min, the microstructure consisted of a FCC matrix and Y2 [...] Read more.
A novel metal matrix composite CrMnFeCoNi with Y2O3 as reinforcement phase was designed and manufactured by mechanical alloying and spark plasma sintering. After sintering at 900 °C for 5 min, the microstructure consisted of a FCC matrix and Y2O3 nanoparticles. The addition of 0.25 wt % Y2O3 increased the room temperature tensile strength of the CrMnFeCoNi base from 868 MPa to 1001 MPa, while the mechanical properties of the addition of 0.5 wt % Y2O3 composite decreased. In the meantime, the addition of Y2O3 had no significant influence on the coefficient of friction, while the addition of 0.25 wt % Y2O3 composite shows excellent wear-resistance. Full article
(This article belongs to the Special Issue Contact Mechanics and Elastomer Friction of Materials)
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5735 KiB  
Article
Simultaneous Contact Sensing and Characterizing of Mechanical and Dynamic Heat Transfer Properties of Porous Polymeric Materials
by Bao-guo Yao, Yun-liang Peng and De-pin Zhang
Materials 2017, 10(11), 1249; https://doi.org/10.3390/ma10111249 - 30 Oct 2017
Cited by 2 | Viewed by 4598
Abstract
Porous polymeric materials, such as textile fabrics, are elastic and widely used in our daily life for garment and household products. The mechanical and dynamic heat transfer properties of porous polymeric materials, which describe the sensations during the contact process between porous polymeric [...] Read more.
Porous polymeric materials, such as textile fabrics, are elastic and widely used in our daily life for garment and household products. The mechanical and dynamic heat transfer properties of porous polymeric materials, which describe the sensations during the contact process between porous polymeric materials and parts of the human body, such as the hand, primarily influence comfort sensations and aesthetic qualities of clothing. A multi-sensory measurement system and a new method were proposed to simultaneously sense the contact and characterize the mechanical and dynamic heat transfer properties of porous polymeric materials, such as textile fabrics in one instrument, with consideration of the interactions between different aspects of contact feels. The multi-sensory measurement system was developed for simulating the dynamic contact and psychological judgment processes during human hand contact with porous polymeric materials, and measuring the surface smoothness, compression resilience, bending and twisting, and dynamic heat transfer signals simultaneously. The contact sensing principle and the evaluation methods were presented. Twelve typical sample materials with different structural parameters were measured. The results of the experiments and the interpretation of the test results were described. An analysis of the variance and a capacity study were investigated to determine the significance of differences among the test materials and to assess the gage repeatability and reproducibility. A correlation analysis was conducted by comparing the test results of this measurement system with the results of Kawabata Evaluation System (KES) in separate instruments. This multi-sensory measurement system provides a new method for simultaneous contact sensing and characterizing of mechanical and dynamic heat transfer properties of porous polymeric materials. Full article
(This article belongs to the Special Issue Contact Mechanics and Elastomer Friction of Materials)
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4840 KiB  
Article
Time-Variant Reliability Analysis for Rubber O-Ring Seal Considering Both Material Degradation and Random Load
by Baopeng Liao, Bo Sun, Meichen Yan, Yi Ren, Weifang Zhang and Kun Zhou
Materials 2017, 10(10), 1211; https://doi.org/10.3390/ma10101211 - 20 Oct 2017
Cited by 29 | Viewed by 7797
Abstract
Due to the increase in working hours, the reliability of rubber O-ring seals used in hydraulic systems of transfer machines will change. While traditional methods can only analyze one of the material properties or seal properties, the failure of the O-ring is caused [...] Read more.
Due to the increase in working hours, the reliability of rubber O-ring seals used in hydraulic systems of transfer machines will change. While traditional methods can only analyze one of the material properties or seal properties, the failure of the O-ring is caused by these two factors together. In this paper, two factors are mainly analyzed: the degradation of material properties and load randomization by processing technology. Firstly, the two factors are defined in terms of material failure and seal failure, before the experimental methods of rubber materials are studied. Following this, the time-variant material properties through experiments and load distribution by monitoring the processing can be obtained. Thirdly, compressive stress and contact stress have been calculated, which was combined with the reliability model to acquire the time-variant reliability for the O-ring. Finally, the life prediction and effect of oil pressure were discussed, then compared with the actual situation. The results show a lifetime of 12 months for the O-ring calculated in this paper, and compared with the replacement records from the maintenance workshop, the result is credible. Full article
(This article belongs to the Special Issue Contact Mechanics and Elastomer Friction of Materials)
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