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Semiaktiv hydraulisk stötdämpning BvS10
2015 (Swedish)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

BvS10 is an articulated tracked terrain vehicle which is made by BAE Systems Hägglunds in Örnsköldsvik. The vehicle´s weight has almost doubled since its original design which forms the need to develop a new suspension system. The BvS10 is thought to get increased maneuvering abilities by implementing semi-active damping. This is because the CV90, another vehicle manufactured by BAE Systems Hägglunds, had its maneuver ability greatly increased when implementing semi-active damping.This master thesis shows a design solution of the hydraulic valve blocks, which valves that should be used and a design proposal of components in order to make them pass the mine protection requirement. The report also shows proposals of how the system is to be controlled in different conditions.The result is divided into two systems. One to regulate the rotary damper located in the front wagon and one to regulate the damping made in the tilt cylinders. The adjustment of the damping in the lamellar damper is made by two AMCA MDM-5 valves and in the tilt cylinders by four Öhlins CES 8700 valves. The simulations and calculations that were made showed great adjustability for the whole system. The practical measurements showed that the valves performs as the theoretical simulations displayed. The reaction time for the valves is 0.03 seconds to reach pressure and 0.15 seconds to reach a stable pressure. The complete system for both the lamellar damper and the tilt cylinder is designed to sustain higher pressures than what the lamellar damper and the tilt cylinder today is designed for. This makes the system prepared for future upgrades of these components.

Place, publisher, year, edition, pages
2015. , 93 p.
Keyword [en]
Technology
Keyword [sv]
Teknik
Identifiers
URN: urn:nbn:se:ltu:diva-46453Local ID: 4179ced9-82cf-42c9-9222-1cbd909ac4efOAI: oai:DiVA.org:ltu-46453DiVA: diva2:1019767
External cooperation
Subject / course
Student thesis, at least 30 credits
Educational program
Mechanical Engineering, master's level
Examiners
Note
Validerat; 20150610 (global_studentproject_submitter)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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Citation style
  • apa
  • ieee
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  • Other style
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Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
  • html
  • text
  • asciidoc
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