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3 edition of Quasi-static viscoelasticity loading measurements of an aircraft tire found in the catalog.

Quasi-static viscoelasticity loading measurements of an aircraft tire

Quasi-static viscoelasticity loading measurements of an aircraft tire

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  • 32 Currently reading

Published by National Aeronautics and Space Administration, Langley Research Center, National Technical Information Service, distributor in Hampton, Va, [Springfield, Va .
Written in English

    Subjects:
  • Viscoelasticity.,
  • Aircraft tires.,
  • Prony series.,
  • Least squares method.,
  • Static loads.

  • Edition Notes

    Other titlesQuasi static viscoelasticity loading measurements of an aircraft tire
    StatementAngela J. Mason and John A. Tanner, Arthur R. Johnson.
    SeriesNASA technical memorandum -- 4779, ARL technical report -- 1402
    ContributionsTanner, John A., Johnson, Arthur R., Langley Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL17132923M

    The risk of traffic accidents may rise significantly when the skid resistance is lower than a certain threshold [].The skid resistance is measured as a resistive drag force, generally using the locked-wheel, dynamic friction tester or grip tester with standard testing tires or rubber sliders [].The pavement interface friction is affected by many factors, such as vehicle factors (load, speed Author: Yi Peng, Joshua Qiang Li, You Zhan, Kelvin C. P. Wang, Guangwei Yang. Viscoelastic phenomena Motivations for study Transient properties: creep and relaxation Viscoelastic functions J(t), E(t) Solids and liquids; anelastic materials Dynamic response to sinusoidal load Demonstration of viscoelastic behavior Historical aspects Summary Examples Problems.

    Add to Book Bag Remove from Book Bag Saved in: A model for space shuttle orbiter tire side forces based on NASA landing systems research aircraft test results /. An elastic large displacement thick-shell mixed finite element is modified to allow for the calculation of viscoelastic stresses. Internal strain variables are.

    This paper presents the status of a dual-prong research effort by NASA experimentalists in support of the National Tire Modeling Program. Specifically, the first experimental thrust deals with tire responses in the form of heat build-up in a rolling tire; force distribution in the contact region of a statically loaded tire; and static tire Author: Sharon E. Perez, John A. Tanner. Journal of Aircraft; Journal of Guidance, Control, and Dynamics; Journal of Propulsion and Power; Journal of Spacecraft and Rockets; Journal of Thermophysics and Heat Transfer; Browse All Journals; Browse All Virtual Collections; Books. AIAA Education Series; Library of Flight; Progress in Astronautics and Aeronautics; The Aerospace Press.


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Quasi-static viscoelasticity loading measurements of an aircraft tire Download PDF EPUB FB2

On an aircraft tire to observe the quasi-static viscoelastic response of the tire. The data indicate that the tire continues to respond viscoelastically even after it has been softened by deformation.

Load relaxation data from the stair-step test at the b loading was fit to a monotonically decreasing Prony series. Introduction. on an aircraft tire to observe the quasi-static viscoelastic response of the tire. The data indicate that the tire continues to respond viscoelastically even after it has been softened by deformation.

Load relaxation data from the stair-step test at the lb loading was fit to a monotonically decreasing Prony series. Introduction. Stair-step loading, cyclic loading, and long-term relaxation tests were performed on an aircraft tire to observe the quasi-static viscoelastic response of the tire. The data indicate that the tire continues to respond viscoelastically even after it has been.

Get this from a library. Quasi-static viscoelasticity loading measurements of an aircraft tire. [Angela J Mason; John A Tanner; Arthur R Johnson; Langley Research Center.]. Stair-step loading, cyclic loading, and long-term relaxation tests were performed on an aircraft tire to observe the quasi-static viscoelastic response of the tire.

The data indicate that the tire continues to respond viscoelastically even after it has been softened by deformation. QuasiStatic Viscoelasticity Loading Measurements of an Aircraft Tire. Stair-step loading, cyclic loading, and long-term relaxation tests were performed on an aircraft tire to observe the quasi-static viscoelastic response of the tire.

The data indicate that the tire Quasi-static viscoelasticity loading measurements of an aircraft tire book to respond viscoelastically even after it has bee. An investigation was conducted at Langley Research Center to determine the quasi-static and dynamic response characteristics of F-4 military fighter 30x/26PR bias-ply and radial-belted main gear tires.

Tire properties were measured by the application of vertical, lateral, and fore-and-aft loads. Mass moment-of-inertia data were also obtained. Some numerical models are proposed for simulate the aircraft tire behaviour on the ground in critical situations.

Fully coupled thermo-mechanical analysis procedures taking into account finite deformation, dynamics and frictional contact are studied; the visco-elasticity properties of the rubber were identified. A good agreement is observed at moderate speed, thus the model is extrapolated to Cited by: 2.

Stair-step loading, cyclic loading, and long-term relaxation tests were performed on an aircraft tire to observe the quasi-static viscoelastic response of the tire.

the aircraft's response to control inputs. An analytical description of the aircraft's stability augmentor is also given. For those aircraft for which complete information was available, the following summarizes the contents and presentation: 7.

Flight conditions for which computations are made including: a. Configtu_ations (e.g., fuel load_ flaps. QUASI-STATIC VISCOELASTIC FINITE ELEMENT MODEL OF AN AIRCRAFT TIRE Arthur R• Johnson #, John A.

Tanner %, and Angela J. Mason $ Computational Structures Branch, MS NASA Langley Research Center Hampton, VA ABSTRACT An elastic large displacement thick-shell mixed finite element is modified to allow for the calculation of viscoelastic stresses.

ANGELA JANETTE MASON (@) Johnson, Arthur R.: Quasi-Static Viscoelastic Loading Measurements Of An Aircraft Tire. NASA Technical Memorandum PublicationSeptember Johnson, Arthur R.; Tanner, John A.; and Mason, Angela J.: Quasi-Static Viscoelastic Finite Element Model of an Aircraft Tire.

NASA Technical File Size: 18KB. Training on teaching of car development process with an illustration of ergonomics and simulations. • Static and quasi static maneuvers • Adams/Smart Driver Dynamic simulations • Open loop steering events • Cornering events • Course events • Roll stability events.

The tests were made with a CB airplane on both wet and dry concrete and bituminous pavements and on snow-covered and ice surfaces at speeds from 12 to knots. Measurements were made of the maximum (incipient skidding) friction coefficient, the full-skidding (locked wheel) friction coefficient, and the wheel slip ratio during braking.

A quasi-static stress analysis in ABAQUS/Standard: is used to analyze problems with time-dependent material response (creep, swelling, viscoelasticity, and two-layer viscoplasticity); is used when inertia effects can be neglected; and.

can be linear or nonlinear. A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text.

A time domain boundary element method (BEM) is presented to model the quasi-static linear viscoelastic behavior of asphalt pavements. In the viscoelastic analysis, the fundamental solution is derived in terms of elemental displacement discontinuities (DDs) and a boundary integral equation is formulated in the time by: Biography of Angela Janette Mason Tanner, John A.; Johnson, Arthur R.: Quasi-Static Viscoelastic Loading Measurements Of An Aircraft Tire.

NASA Technical Memorandum PublicationSeptember Johnson, Arthur R.; Tanner, John A.; and Mason, Angela J.: Quasi-Static Viscoelastic Finite Element Model of an Aircraft Tire.

NASA Technical. Match the load-deflection curve for the actual tire as closely as possible, and Aircraft Tire Tire Designation Main Tire H29x CRJ Auxiliary Tire 18x Main Tire Hx B Auxiliary Tire 27xR15 Main Tire H49x B Auxiliary Tire H49x Table F The nodes at the rim are fixed and a pressure P = MPa is prescribed at the inner surface of the tire.

Typical load steps for tire analysis are applied including inflation, development of footprint and straight rolling.

For the two latter steps, a rigid flat surface without friction is used, where a vertical displacement d = 25 mm is by: 1. Page 1 Grip on road surfaces 4 Introduction 5 Foreword: grip and its double paradox 7 I Rubber and grip 8 RUBBER: A VISCO-ELASTIC MATERIAL 8 What is a visco-elastic material?

8 A little more information on the behaviour of elastic materials 9 A little more information on the behaviour of viscous materials 10 A little more information on the behaviour of visco-elastic materials.The viscoelasticity which is an important mechanical property for rubber matrix would be influenced by the adding of aramid fiber.

In this study, the dynamic and quasi-static viscoelasticity were investigated via the dynamic thermal analysis experiment and the mullins experiment with .include the viscoelastic nature of the tire which can have a significant effect on load-displacement curves.

This study is the computational part of an effort in which the quasi-static viscoelastic loading and unloading of an aircraft tire was measured and computationally simulated.

The experimental effort.