J2731_200611 Low Speed Enveloping Test with Perpendicular and Inclined Cleats

Issued

11/06/2006

Features
Issuing Committee
Scope
Content
This SAE Recommended Practice describes a test method for measuring the forces and moments generated at a spindle when a tire rolls over a rectangular obstacle, cleat, at very low speed. The cleat used in a particular test condition is configured with its crest either perpendicular, 90°, to the path of the tire or optionally with its crest inclined at an angle to the path of the tire. The carriage to which the spindle is attached is rigidly constrained in position during each test condition so as to provide a good approximation to fixed loaded radius operation. The method discussed in this document provides cleat envelopment force and moment and tire angular position histories as functions of distance traveled. These histories are essentially free from variations due to tire non-uniformities. The method applies to any size tire so long as the equipment is properly scaled to conduct the measurements for the intended test tire. The data are suitable for use in determining parameters for road load models and for comparative evaluations of the measured properties in research and development.
Rationale
Content
This Recommended Practice was developed as part of a set of Recommended Practices intended to allow modelers to determine the parameters required by any of the common tire models for calculating spindle loads given the road surface profile. The Recommended Practices provide the necessary data from a single set of experimental results, thus, eliminating duplicate testing.
Meta TagsDetails
DOI
https://doi.org/10.4271/J2731_200611
Pages
12
Citation
SAE International Recommended Practice, Low Speed Enveloping Test with Perpendicular and Inclined Cleats, SAE Standard J2731_200611, Issued November 2006, https://doi.org/10.4271/J2731_200611.
Additional Details
Publisher
Published
Nov 6, 2006
Product Code
J2731_200611
Content Type
Recommended Practice
Status
Issued
Language
English