12/20/2013 1 OFF-ROAD SOFT SOIL TIRE MODEL DEVELOPMENT, VALIDATION, AND INTERFACE TO COMERCIAL MULTIBODY DYNAMICS SOFTWARE Graduate Students: Mr. Shahyar Taheri (Jan 2012-present), Mr. Scott Naranjo (Jan. 2011-June 2013), Virginia Tech Primary Investigator: Dr. Corina Sandu, Director AVDL, Dr. Saied Taheri, Director CenTIRe • U.S. Army Quad Member: Dr. David Gorsich (Sept. 2013-present), Dr. Paramsothy Jayakumar (Jan. 2011-Sept. 2013), TARDEC • Industry Quad Members: Dr. Brant Ross, MotionPort, Mr. Daniel Christ, Michelin Americas Research Co
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Off-Road Soft Soil Tire Model Development, Validation, and Interface to Commercial Multibody Dynamics Software Paper81393
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12/20/2013
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OFF-ROAD SOFT SOIL TIRE MODEL
DEVELOPMENT, VALIDATION, AND
INTERFACE TO COMERCIAL MULTIBODY
DYNAMICS SOFTWARE
Graduate Students: Mr. Shahyar Taheri (Jan 2012-present), Mr. Scott Naranjo (Jan. 2011-June 2013), Virginia Tech
Primary Investigator: Dr. Corina Sandu, Director AVDL, Dr. Saied Taheri, Director CenTIRe
• U.S. Army Quad Member: Dr. David Gorsich (Sept. 2013-present), Dr. Paramsothy Jayakumar (Jan. 2011-Sept. 2013), TARDEC
• Industry Quad Members: Dr. Brant Ross, MotionPort, Mr. Daniel Christ, Michelin Americas Research Co
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Agenda
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Introduction
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Methodology
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Tire Structure Modeling
Middle Layer Top view Side Layer
Three layer tire model
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Comparison: FTire and AS2TM
Belt Circumferential Torsion
and Twist Stiffness red: ‘torsion’
stiffness; blue: ‘twist’ stiffness
Out-of-Plane Bending
Stiffness
Belt Lateral Bending
Stiffness
Inplane-Plane Bending
Stiffness
FTire model structure AS2TM model structure
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Tire-soil interaction
Tire-soil
contact
3D soil
elevation map
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• Discretization of tire-soil interface and soil surface for contact search algorithm
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Tire-soil interaction
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• Tire element velocity vector components effect on soft soil