A1 Journal article (refereed), original research

Targeting the user experience in the development of mobile machinery using real-time multibody simulation

Open Access publication

Publication Details
Authors: Khadim Qasim, Kaikko Esa-Pekka, Puolatie Eero, Mikkola Aki
Publisher: SAGE Publications (UK and US): Creative Commons Attribution / SAGE Publishing
Publication year: 2020
Language: English
Related Journal or Series Information: Advances in Mechanical Engineering
Volume number: 12
Issue number: 6
Start page: 1
End page: 15
Number of pages: 15
ISSN: 1687-8132
eISSN: 1687-8140
JUFO-Level of this publication: 1
Permanent website address: https://doi.org/10.1177/1687814020923176
Open Access: Open Access publication
Location of the parallel saved publication: https://journals.sagepub.com/doi/abs/10.1177/1687814020923176
Research data location: http://www.hindawi.com/journals/ame


Applying a semi-recursive multibody approach enables the solution of the equations of motion of a complex system in real time. This makes it possible to conduct human-in-loop simulations and analyse the user experience. The idea of recognizing the user experience to produce more efficient, competitive, and user-friendly products has been limited thus far to the field of information technology and the development of light physical products. This study introduces a simulation modelling procedure for a complex forklift mast system that can be used to help analyse the user experience. A multibody forklift model is introduced that includes the electric motors, a pump, a freelift, a mainlift and tilt cylinders, actuators, pulley and chain mechanisms, contacts, and tyres. The viscoelastic behaviour of the chain during longitudinal and transverse movement is simulated using a discrete model approach. Triplex mast speeds and hydraulic system efficiencies across working cycles are used to verify the performance of the introduced real-time simulation model against measurements taken from an equivalent reference forklift. To better evaluate the developed model, experienced and inexperienced forklift drivers were asked to drive an updated simulator and provide feedback. User experience inputs that can be made available early on in development using this new modelling approach will permit experts to evaluate and design more efficient complex mechanical systems.

Last updated on 2020-15-06 at 11:23