Research of Non-Standard Disc Spring for Anti-Stall Tool

Although permanent magnet couplings (PMCs) have been under research for many years and have found successful industrial applications, this is still a technology under development. Accurate parameter determination is of significance for performance analysis and critical decisions on PMC design. However, the determination can often lead to an unacceptable increase in computation, especially when finite elements (FE) are used. The study aims to develop an FE model that is used for the structural design of a standard-disc type PMC for optimal torque. For the quick and accurate design, an integration optimal solution of the response surface methodology (RSM) and the Taguchi’s method was proposed. To verify the simulation, a series of experimental investigations were conducted on a self-developed testing platform. Furthermore, for a minimum set of FE analyses (FEA), a quantitative indicator called contribution rate, which can reflect effect level of structure parameters on the torque, was given based on the Taguchi method. Apart from this, the orthogonal matrix was used for the reduction of the FE calculation. Based on the contribution rate, the response surface methodology was adopted for the optimal torque determination with no increase in the PM volume. According to the optimization results, a fitting formula, which considers the contribution rates of the optimization variables, was presented. The results suggest that the FE simulations agree very well with the experiments, and the fitting formula can be used in the PMC design.

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Theoretical and experimental research on a new rotating standing wave ultrasonic motor

Journal of Physics Conference Series ◽

10.1088/1742-6596/2125/1/012047 ◽

2021 ◽

Vol 2125 (1) ◽

pp. 012047

Author(s):

Xiaozhu Wang ◽

Jian Zhang

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Standing Wave ◽

Theoretical Basis ◽

Integrated Design ◽

Ultrasonic Motor ◽

Element Analysis ◽

Optimum Position ◽

The Finite Element Analysis ◽

Disc Spring

Abstract In this paper, a new rotating standing wave ultrasonic motor with multiple driving teeth is proposed. Using the method of adding additional teeth, the correction of the B06 surface of the ultrasonic motor vibrator is expected, the design of the optimum position of the drive tooth is realized. At the same time, a method of reducing the stiffness of the rotor is proposed, and the flexibility is met, the integrated design of the rotor and the pressure device can be realized by removing the disc spring. The accuracy of the finite element analysis is verified by the vibration test of the prototype oscillator. The finite element analysis of the main structure parameters of the influence oscillator mode and natural frequency is carried out. It provides theoretical basis for the design and machining of vibration.

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Modeling of Disc Spring Self-Centering Energy Dissipation Braces from Inactive State to Design Limit State

Journal of Engineering Mechanics ◽

10.1061/(asce)em.1943-7889.0001988 ◽

2021 ◽

Vol 147 (10) ◽

pp. 04021077

Author(s):

Longhe Xu ◽

Hao Jiang ◽

Xingsi Xie ◽

Zhongxian Li

Keyword(s):

Energy Dissipation ◽

Limit State ◽

Inactive State ◽

Disc Spring

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Coned Disc Spring Compound Vertical Isolation: Testing and Modelling

Journal of Earthquake Engineering ◽

10.1080/13632469.2020.1850573 ◽

2020 ◽

pp. 1-33

Author(s):

Wei Wang ◽

Xingxing Wang ◽

Aiqun Li

Keyword(s):

Disc Spring

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Computerizing the Design of Belleville Disc Spring Stacks

Journal of Engineering Design ◽

10.1080/09544829308914781 ◽

1993 ◽

Vol 4 (3) ◽

pp. 189-199

Author(s):

J. VOGWELL ◽

K. LAU

Keyword(s):

Disc Spring

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The Novel Quantitative Assay for Measuring the Antibiofilm Activity of Volatile Compounds (AntiBioVol)

Applied Sciences ◽

10.3390/app10207343 ◽

2020 ◽

Vol 10 (20) ◽

pp. 7343

Author(s):

Malwina Brożyna ◽

Anna Żywicka ◽

Karol Fijałkowski ◽

Damian Gorczyca ◽

Monika Oleksy-Wawrzyniak ◽

...

Keyword(s):

Volatile Compounds ◽

Cost Effective ◽

Antibiofilm Activity ◽

Experimental Conditions ◽

Laboratory Equipment ◽

Tea Tree ◽

Technical Parameters ◽

The Impact ◽

Standard Disc

Herein, we present a new test, dubbed AntiBioVol, to be used for the quantitative evaluation of antibiofilm activity of volatile compounds in vitro. AntiBioVol is performed in two 24-well plates using a basic microbiological laboratory equipment. To demonstrate AntiBioVol usability, we have scrutinized the activity of volatilized eucalyptus, tea tree, thyme essential oils, and ethanol (used for method suitability testing) against biofilms of Staphylococcus aureus, Pseudomonas aeruginosa, and Candida albicans. We have also compared AntiBioVol with the standard disc volatilization method, placing a special stress on evaluating the impact of various technical parameters on the outcomes of the latter method. The obtained results indicate that AntiBioVol allows analyzing the antibiofilm activity of volatile compounds in a high number of repeats and provides semi-quantitative or quantitative results of high repeatability. In comparison to disc volatilization, AntiBioVol is a more space- and cost-effective method that allows analyzing various types of microbial aggregates. Moreover, we have indicated that the possible reasons for the discrepancies in the results obtained by means of the standard disc volatilization method may be related to various parameters of the testing dishes used (height, volume, diameter) and to various volumes of the agar medium applied. In turn, the application of a 24-well plate and a strictly defined AntiBioVol protocol provide a higher control of experimental conditions. Therefore, the application of AntiBioVol may enable an optimization of and introduction of volatile compounds to the fight against infective biofilms.

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