Interconnected Suspension System on Sport Motorcycles

Moreno-Ramírez, C.; García‐Fernández, Pablo; De-Juan, Ana; Tomás-Rodrı́guez, M.

doi:10.1007/978-94-007-7485-8_2

Cited by 3 publications

(4 citation statements)

References 7 publications

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“…In comparison with the preliminary work presented on [12], here we consider a nonlinear model where a discontinuity is introduced in the tires forces modelling, as a result, these forces become zero when the tires take off from the road. As it has been already explained in the introduction section, wheels fly times have been considered as a measurement for the suspension system's precision.…”

Section: Resultsmentioning

confidence: 99%

“…Following the approach in [12] the total force applied by the front telescopic fork is divided in both, standard and interconnection forces, which are defined independently. The suspension force depends linearly on the front fork position and speed, whilst the interconnection force does it on the rear swinging arm angle and rotational speed.…”

Section: B Interconeccion Modellingmentioning

confidence: 99%

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Non linear optimization of a sport motorcycle's suspension interconnection system

Moreno-Ramírez

Tomás-Rodrı́guez

2014

2014 UKACC International Conference on Control (CONTROL)

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Abstract-A high fidelity nonlinear model of a sport motorcycle is modified to include interconnected suspension forces between the front and rear ends. The comfort and the suspensions efficiency have been studied for a wide range of interconnection stiffness and damping coefficients. An optimization of these coefficients is performed considering different possible mechanical implementations, going from a simple damping connection to full variable stiffness and damping coefficients depending on the speed. Finally the system is analyzed from the stability point of view to ensure that the oscillating modes are not strongly modified and the system stability is not compromised.

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Section: Resultsmentioning

confidence: 99%

Section: B Interconeccion Modellingmentioning

confidence: 99%

Non linear optimization of a sport motorcycle's suspension interconnection system

Moreno-Ramírez

Tomás-Rodrı́guez

2014

2014 UKACC International Conference on Control (CONTROL)

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“…The optimization of the design consisted in adding telescopic struts to the original design ( Figure 2 ). A similar system of stabilizing the front wheel is used in practice for sports modifications of road motorcycles [ 30 , 31 , 32 , 33 , 34 ]. The choice of struts for this design is limited by the force expended by the driver.…”

Section: Introduction To Problem Statementmentioning

confidence: 99%

Experimental Research on Manson–Coffin Curves for the Frame Material of an Unconventional Vehicle

et al. 2022

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The submitted research paper describes the fundamental findings in terms of multiaxial fatigue of the basic material EN AW6063 and its welds for implementation in the frame design of an unconventional vehicle. It also includes a briefly-presented conceptual design of a technical solution for optimizing the functionality of a steering mechanism in a patented unconventional vehicle, designed by the authors to increase the cornering stability of a vehicle–tricycle. The most important part of this article is the description of the ongoing research and the results of multiaxial fatigue (bending–torsion combination) of the structural material for the construction of the vehicle frame. The research in this area is important due to the increased load on the frame during operation caused by the unconventional steering mechanism. The measured and constructed Manson–Coffin curves indicate that the use of material EN AW6063 is possible for this vehicle in terms of multiaxial stress. This also applies to the material affected by the technology in the frame production (TIG welding). A higher fatigue of the basic material was observed at a 90° phase shift. The difference between the 0° and 90° phases practically makes up approximately 10 to 15% of the difference in the cycle numbers with the same deformation amplitude. At the same time, the measured results show that the phase shift between loads will not play such an important role in welded joints of aluminum alloy EN AW6063. When comparing the dependences with a constant deformation amplitude in bending and in torsion, it can be said that the bending stress will react more to even a small change in the deformation amplitude. Bending has been proven to be the more dominant component of the total deformation amplitude in multiaxial tests. In terms of low-cycle multiaxial fatigue (up to 5 × 105 cycles), a higher fatigue of the basic material is found in comparison with the weld. At lower deformation amplitudes, a higher fatigue of the welded material is detected.

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“…for achieving progressive behavior. Studies on front/rear interconnected suspensions for optimizing the motorcycle pitch can be found in the literature [24,25]. Semi-active suspensions characterized by controllable damping, e.g.…”

Section: Introductionmentioning

confidence: 99%

Numerical Assessment of a New Hydro-Pneumatic Suspension System for Motorcycles

Martini¹,

Bellani²,

Fragassa³

2018

Int. J. Automot. Mech. Eng.

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This work investigates an innovative hydro-pneumatic suspension system that was recently developed for possibly enhancing the performance of wheeled road vehicles, particularly motorcycles. The device exhibits a highly non-linear behavior, and in particular a strongly regressive spring rate, due to its architecture (featuring a hydropneumatic spring and a coil spring arranged in series). Multibody models are implemented and simulated for a preliminary assessment of its actual benefits and/or drawbacks with respect to common suspension systems. As a starting point of the research, this work focuses on the in-plane dynamics, and in particular on a condition of straight running at constant speed. The load fluctuations on the rear wheel (grip) as well as the velocity of the suspended mass (comfort) under different road inputs at various speeds are analyzed. The numerical results confirm the hydro-pneumatic suspension system as a promising device.

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Interconnected Suspension System on Sport Motorcycles

Cited by 3 publications

References 7 publications

Non linear optimization of a sport motorcycle's suspension interconnection system

Non linear optimization of a sport motorcycle's suspension interconnection system

Experimental Research on Manson–Coffin Curves for the Frame Material of an Unconventional Vehicle

Numerical Assessment of a New Hydro-Pneumatic Suspension System for Motorcycles

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