Volume 18, Issue No.1

KEY WORDS

Chainsaw, Dynamic conditions, Starting, Emergency braking.

ABSTRACT

Chainsaws are devices that exhibit intense dynamic effects. Their duty cycle can be divided into several stages. In particular: start-up, operational run and run-down. During each stage the engine unit is connected to or disconnected from the working part through centrifugal clutch. When driven by internal combustion engine, the unfavourable vibrations occur at the handles due to unevenness of its run. Chainsaw manufacturers pay special attention to emergency braking in critical situations. Time necessary for chain to stop from encountering the first emergency trigger is taken as a measure of effectiveness of the breaking system. To assess specific chainsaw systems, it is necessary to create detailed computational dynamic model. CITATION INFORMATION

Acta Mechanica Slovaca. Volume 18, Issue 1, Pages 72–74, ISSN 1335-2393

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  Simulations of Starting and Braking of the Chainsaw

REFERENCES

[1] Pešík, L., Vančura, M.: Vibration Isolation Support of Machine with Flexible Frame. In Proceeding of the 50. International scientific conference of machine elements departments. 1st edition. Žilina: University of Žilina - EDIS - edition ŽU, 2009. s. 47. ISBN 978-80-554-00.

[2] Pešík, L., Vančura, M.: Vibration of hand tool. In Proceeding of 27. International scientific conference DIAGO 2008 : Technical University of Ostrava, 2008. ISSN 1210-311X.
[3] Pešík, L., Vančura, M.: Antivibration System of Hand-Held Tools with Dominant Vibration Component. In 48th International Conference of Machine Elements and Mechanisms Department 2007. Bratislava: Slovak technical University of Bratislava, 2007. s. 42. ISBN 978-80-227-27.Surname N.M., Surname, N. and Surname N., Name of Book (in Italics) (Publisher, Place of Publication, YYYY). ISBN.
[4] Pešík, L., Skarolek, A.: Tuning of Vibration Isolation Differential Pneumatic System by Means of Trottle Valve. In Transactions of the Universities of Košice: Research reports from the Universities of Košice. 2nd edition. Košice : Technical University of Košice, 2011. s. 191-196. ISSN 1335-2334.
[5] Pešík, L., Skarolek, A.: Variable Stiffness of Resilient Pneumatic Support. Pneumatyka: Przemysłowe systemy spręzonego powietrza. 2011, 78, 1, s. 25-27. ISSN 1426-6644.
[6] HARRIS, C. M. Shock and vibration handbook. New York: McGraw-Hill, 2002.
[7] Homišin, J.: Methods of tuning torsionally oscillating mechanikal systems using pneumatic tuners of torsional oscillations. Transactions of the technical university of Kosice, 3/4, 1993, p. 415–419.
[8] Homišin, J. a kol.: Súčasné trendy optimalizácie strojov a zariadení. Košice: C – PRESS, 2006.

 

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