COBEM99

S2 Bioengenharia e Qualidade de Vida

Title:

DIRIGIBILITY STUDY APPLIED TO HUMAN POWERED TRICYCLES USING CHAINSET TRANSMISSION AND CONTINUOUSLY VARIABLE TRANSMISSION

Summary :

ABSTRACT: THIS WORK IS BASICALLY A DIRIGIBILITY STUDY APPLIED TO HPT - HUMAN POWERED TRICYCLES. THE BEHAVIOUR OF THE VEHICLE IS SIMULATED IN A TRACK WITH COMPACTED FLOOR, CONTEND CURVES, STRAIGHT LINE, UP AND DOWN GRADES. A SIMPLIFIED MATHEMATICAL MODEL IS USED TO MODEL THE SYSTEM (VEHICLE + CYCLIST). AS THE SYSTEM OF EQUATIONS OBTAINED IS EXTREMELY COUPLED AND NON-LINEAR, IT IS NECESSARY TO USE NUMERIC PROCEDURES TO SOLVE THE EQUATIONS AND TO OBTAIN THE DYNAMIC BEHAVIOUR OF THE SYSTEM DURING ITS PATH IN THE RACETRACK. THE INFLUENCES OF THE TRACK IN ITS STABILITY, THE BEHAVIOUR OF THE VEHICLE USING CHAINSET TRANSMISSIONS AND CVTS (CONTINUOUSLY VARIABLE TRANSMISSION) ARE ALSO ANALYSED. KEYWORDS: CHAINSET TRANSMISSION, CVT, ENERGY EXPENDITURE, PEDALING FREQUENCY.

Author :

Becker, Marcelo 0
Dedini, Franco Giuseppe
Forti, Antonio Wagner
Okabe, Eduardo Paiva

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