Showing papers in "Journal of Terramechanics in 1986"

TL;DR: In this paper, the authors measured differences in soil surface properties on soil cores collected from within tracks and adjacent undisturbed areas and found that the passage of tracks resulted in an increase in bulk density, a reduction in saturated hydraulic conductivity and an increase of cone penetrometer resistance.

TL;DR: In this article, the authors measured soil strength, surface micro-relief, bulk density and saturated hydraulic conductivity for two soil types (Dd 1.13 and Uc 2.12) at Shoalwater Bay, Queensland, before and after the passage of a tracked vehicle.

TL;DR: It is demonstrated that the computer simulation model, known as NTVPM-85, is a useful tool for the vehicle designer and the user in the evaluation of competing designs and in the examination of the effects on performance of design modifications and terrain conditions.

TL;DR: In this paper, a mathematical model for predicting the steerability of articulated units has been developed and computerized for numerical application, and the accuracy of the analog has been verified by scale model tests.

TL;DR: A review of the experimental information on the development of lateral forces on tires traveling at an angle to their center plane is presented and the usefulness of the consideration of the lateral forces for the application of an analytical model is evaluated as discussed by the authors.

TL;DR: In this paper, the Burgers model can be used as a general rheological model of paddy soils in South China, among which most are clays, and the effect of soil conditions (mechanical composition, water content, bulk density) is particularly significant, while that of loading conditions (shape and size of bearing surface, load) is practically not significant.

TL;DR: In this article, the authors present mathematical models which express the dependence of a tyre's slip rate on longitudinal forces, permit to solve the statically undeterminable problem concerning the distribution of the wheel's longitudinal forces in any multi-axle vehicle.

TL;DR: Methods for quantifying vehicle ride are compared, and the Draft Revision of ISO 2631 is recommended as the best currently available approach.

TL;DR: In this article, a slope angle measuring apparatus with a vertical gyroscope was made to measure profiles using the slope integration method, and the mean value of spectral slope (2,3) was steeper than that of the recommended value by ISO/TC108/SC2.

TL;DR: In this paper, the development of suspension system superelements as standard elements in a general multi-body dynamics program is discussed, including a track vehicle suspension and the use of terramechanical relations to describe soil compliance.

TL;DR: In this paper, the simulation results from computer simulation programs modelling the dynamic behaviour of a dump truck and a military tank were compared to measured values to investigate modifications to the vehicles to improve the ride comfort and transient stress levels as the vehicles perform their duties.

TL;DR: A simple BASIC computer program has been developed which enables the student of AFV design to investigate the survivability of such a vehicle as a function of its mobility, armour type and threat level.