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Reduced testing and modeling of the bearing capacity of rooted soil for wheeled forestry machines
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.). (System and Component Design)
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.). (System and Component Design)
2015 (English)In: Journal of terramechanics, ISSN 0022-4898, E-ISSN 1879-1204, Vol. 60, p. 23-31Article in journal (Refereed) Published
Abstract [en]

The next generation of forestry machines must be developed to be gentler to soil and to the root mat than present machines, especially in thinning operations. The bearing capacity of the soil is a key property for determining the terrain trafficability and machine mobility. This asks for better and more general terramechanics models that can be used to predict the interaction between different machine concepts and real and complex forest soil. This paper presents results from terramechanics experiments of rooted soil with a new and small-scale testing device. The force-deflection results are analyzed and compared with analytical root reinforcement models found in literature. The presented study indicates that rooted soil properties obtained with the new laboratory test device can be used to create an augmented soil model that can be used to predict the bearing capacity of rooted soil and also to be used in dynamic machine-soil interaction simulations.

Place, publisher, year, edition, pages
Elsevier, 2015. Vol. 60, p. 23-31
Keywords [en]
Bearing capacity, Forest soil, Root reinforcement, Shear resistance
National Category
Mechanical Engineering
Research subject
Industrial Engineering and Management; Machine Design
Identifiers
URN: urn:nbn:se:kth:diva-172515DOI: 10.1016/j.jterra.2015.05.002ISI: 000358393200003Scopus ID: 2-s2.0-84931271718OAI: oai:DiVA.org:kth-172515DiVA, id: diva2:848580
Projects
Gentle Forrest Machines
Note

QC 20150826

Available from: 2015-08-25 Created: 2015-08-25 Last updated: 2017-12-04Bibliographically approved
In thesis
1. Forestry machine and soil interaction for sustainable forestry
Open this publication in new window or tab >>Forestry machine and soil interaction for sustainable forestry
2015 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

More than 50 percent of the land area of the Nordic countries Finland, Norway, and Sweden are covered by dense forests and they are among the most important producers of forest products in the world. Forestry in these countries is based on sustainable management principles – reforestation follows harvesting. Furthermore, increasing demands for more gentle techniques and technologies with less negative impact on the environment ask for development and implementation of new processes and new machine solutions. The increasing interest in developing forest management approaches that are based on gentleness to the environment requires better understanding of the interaction between the forestry machines and the terrain in the harvesting process.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2015. p. 54
Series
TRITA-MMK, ISSN 1400-1179 ; 2015:04
Keywords
CTL-logging, forestry machine, forwarder, multi-body simulations, roots, terramechanics, wheel-soil interaction, WES model
National Category
Mechanical Engineering
Research subject
Machine Design
Identifiers
urn:nbn:se:kth:diva-172519 (URN)978-91-7595-658-9 (ISBN)
Public defence
2015-09-16, B319, Brinellvägen 85, KTH, Stockholm, 13:00 (English)
Opponent
Supervisors
Projects
Gentle Forest Machines
Note

QC 20150827

Available from: 2015-08-27 Created: 2015-08-25 Last updated: 2015-08-27Bibliographically approved

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