Abstract
Four-wheeled vehicles are often tested on indoor, four-poster road simulator rigs. Road loads are simulated with the use of servo-hydraulic systems for suspension set-up optimisation, NVH analysis, and fatigue life cycles. The use of a road simulator is not such a common practice for two-wheeled vehicles despite problems to be faced being extremely similar. The paper presents a device for testing motorcycles on a Servotest® four-poster. A dedicated restraint system had to be devised in order to support the motorcycle without altering its inertial characteristics. Additional pneumatic actuators with a purposely developed instrumentation have been designed to reproduce braking and power thrusts.
Highlights
IntroductionDevelopments in mechanical engineering and design require increasingly more effort in terms of computing and modelling, especially in the automotive industry where advanced computer models can help to reduce expensive and time-consuming track/road tests, and save time and resources
Developments in mechanical engineering and design require increasingly more effort in terms of computing and modelling, especially in the automotive industry where advanced computer models can help to reduce expensive and time-consuming track/road tests, and save time and resources.In order to be successful, this approach should rely on validated models which are proven to be effective and reliable.A four-poster test rig is a servo-hydraulic road simulator that excites an unrestrained road vehicle through its tyres to determine some of the dynamic characteristics of the vehicle, with particular regard to the suspension system
Automotive engineers consider the four-poster a key device in developing their product and the same considerations can be made for the motorcycle industry [7,8,9]
Summary
Developments in mechanical engineering and design require increasingly more effort in terms of computing and modelling, especially in the automotive industry where advanced computer models can help to reduce expensive and time-consuming track/road tests, and save time and resources. A four-poster test rig is a servo-hydraulic road simulator that excites an unrestrained road vehicle through its tyres to determine some of the dynamic characteristics of the vehicle, with particular regard to the suspension system. The so-called four-poster can be used to validate models of a generic four-wheeled vehicle with regard to vertical dynamics, fatigue durability and suspension tuning [1,2,3]. Automotive engineers consider the four-poster a key device in developing their product and the same considerations can be made for the motorcycle industry [7,8,9]
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