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A TECHNIQUE FOR MEASURING VEHICLE DYNAMIC WHEEL LOADS

J Page, J W Grainger

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Abstract

A vehicle travelling along anything other than a perfectly flat and horizontal road surface will, due to excitation of its suspension, apply dynamic wheel loads to the road which vary about its static wheel loads. These variations influence the vehicle's ride and roadholding ability and also its ability to damage road structures, and to generate vibrations in bridges and in buildings adjacent to the road. The report describes a technique for measuring dynamic wheel loads using vehicle-mounted instrumentation. The vehicle's axle is instrumented with strain gauges and accelerometers and their outputs are combined to provide a measure of dynamic wheel load. The technique is shown to give values of dynamic wheel load within about plus or minus 10 per cent of those given by the TRRL dynamic weighbridge, provided the axle motion comprises 'parallel hop' and does not contain a significant 'tramp' component. /Author/TRRL/

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What this paper is about

A vehicle travelling along anything other than a perfectly flat and horizontal road surface will, due to excitation of its suspension, apply dynamic wheel loads to the road which vary about its static wheel loads. These variations influence the vehicle's ride and roadholding ability and also its ability to damage road structures, and to generate vibrations in bridges and in buildings adjacent to the road. The report describes a technique for measuring dynamic wheel loads using vehicle-mounted instrumentation. The vehicle's axle is instrumented with strain gauges and accelerometers and their outputs are combined to provide a measure of dynamic wheel load. The technique is shown to give values of dynamic wheel load within about plus or minus 10 per cent of those given by the TRRL dynamic weighbridge, provided the axle motion comprises 'parallel hop' and does not contain a significant 'tramp' component. /Author/TRRL/

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Available abstract

A vehicle travelling along anything other than a perfectly flat and horizontal road surface will, due to excitation of its suspension, apply dynamic wheel loads to the road which vary about its static wheel loads. These variations influence the vehicle's ride and roadholding ability and also its ability to damage road structures, and to generate vibrations in bridges and in buildings adjacent to the road. The report describes a technique for measuring dynamic wheel loads using vehicle-mounted instrumentation. The vehicle's axle is instrumented with strain gauges and accelerometers and their outputs are combined to provide a measure of dynamic wheel load. The technique is shown to give values of dynamic wheel load within about plus or minus 10 per cent of those given by the TRRL dynamic weighbridge, provided the axle motion comprises 'parallel hop' and does not contain a significant 'tramp' component. /Author/TRRL/

Key concepts: Axle, Accelerometer, Strain gauge, Dynamic load testing, Vibration, Road surface, Automotive engineering, Structural engineering

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A TECHNIQUE FOR MEASURING VEHICLE DYNAMIC WHEEL LOADS — Research Paper | ScholarLens