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

Martini, Alberto; Bellani, Gabriele; Fragassa, Cristiano

doi:10.15282/ijame.15.2.2018.12.0409

Cited by 19 publications

(14 citation statements)

References 37 publications

(34 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Counterbalance forklift trucks represent an omnipresent and almost essential material handling equipment in industrial applications [1]. They are typically characterized by several distinctive design features, in comparison with most wheeled vehicles [2][3][4]. Firstly, they do not have dedicated suspension systems, e.g., elastic elements and/or shock absorbers connecting the wheel assemblies to the vehicle chassis.…”

Section: Introductionmentioning

confidence: 99%

Virtual Testing of Counterbalance Forklift Trucks: Implementation and Experimental Validation of a Numerical Multibody Model

Martini

Bonelli²,

Rivola

2020

Machines

View full text Add to dashboard Cite

This study investigates the dynamic behavior of a recently developed counterbalance forklift truck. The final objective is creating virtual testing tools based on numerical multibody models to evaluate the dynamic stresses experienced by the forklift family of interest during a reference operating cycle, defined by the manufacturer’s testing protocols. This work aims at defining sufficiently accurate and easy-to-implement modelling approaches and validation procedures. It focuses on a specific test, namely the passage of a speed-bump-like obstacle at high velocity, which represents one of the most severe conditions within the reference cycle. Indeed, unlike most of the other wheeled vehicles, forklifts typically do not have advanced suspension systems and their dynamic response is significantly affected by ground irregularities. To this end, a preliminary model of the complete forklift, featuring rigid bodies and a simplified tire–ground contact model, is implemented with a commercial software. Experimental tests are conducted on the forklift to measure the vehicle vibrations when running on the obstacle, for model validation purposes. After model updating, the results provided by the numerical simulations match the experimental data satisfactorily. Hence, the modelling and validation strategies are proven viable and effective.

show abstract

Section: Introductionmentioning

confidence: 99%

Virtual Testing of Counterbalance Forklift Trucks: Implementation and Experimental Validation of a Numerical Multibody Model

Martini

Bonelli²,

Rivola

2020

Machines

View full text Add to dashboard Cite

show abstract

“…The wheel alignment inspection method proposed in this study can provide very accurate results and a cost-efficient way for automakers to inspect the wheel alignment of suspension modules. In addition, it can be also applied in the wheel alignment inspection of motorcycles and unconventional automobiles [12,13].…”

Section: Overview Of Typical Wheel Alignment Inspection For a Full Carmentioning

confidence: 99%

Wheel Alignment of a Suspension Module Unit Using a Laser Module

Kim

Lee

2020

Sensors

View full text Add to dashboard Cite

Vehicle wheel alignment inspection is generally carried out using a computer vision-based system. Due to its inspection mechanism using four wheel centers, the computer vision-based system cannot be applied to the wheel alignment inspection of suspension module units. However, when a vehicle suspension module is being developed, there is no complete car ready for wheel alignment inspection even though it is a very important procedure for suspension property tests. This study proposes a novel and efficient way to inspect vehicle wheel alignment for suspension modules. Two laser modules and several mechanical jigs were employed for wheel alignment inspection, allowing the toe and camber angles of the suspension module to be measured. For accurate wheel alignment results, calibration of the laser modules was performed prior to the inspection. This calibration procedure adjusts the yaw and pitch angles of the laser module so that they can be orthogonal to the mounting jig. For the calibration, a novel method of using laser straightness was adopted and, consequently, 0.02 degrees of orthogonality was achieved. The wheel alignment inspection results were determined then verified using a vision system with two cameras. In order to use this vision system, two cameras were used and a new method of modifying the measurement mechanism was developed. According to the verification results, the proposed wheel alignment inspection provided very high measurement accuracy. The wheel alignment inspection mechanism proposed in this study can not only give very reliable results but also provide a cost-efficient method of inspecting the wheel alignment of suspension modules to automakers.

show abstract

“…Suspension design is generally focused on optimization of ride and handling [19,20], however also the energy efficiency target is of great importance, as for the vehicle under study [21,22]. In general, suspensions are classified as dependent, semi-dependent and independent [24][25][26]. In dependent suspensions (like Panhard rods or Watt's linkages [27], commonly employing leaf springs), the wheels of a same axle are connected to each other by a shaft.…”

Section: Suspension Systemsmentioning

confidence: 99%

Static stress analysis of suspension systems for a solar-powered car

Odabaşı¹,

Maglio²,

Martini³

et al. 2019

FME Transactions

View full text Add to dashboard Cite

Suspension systems are designed aiming at providing adequate handling, road holding, comfort and vibration control to a terrestrial vehicle. Being an important issue not only for regular road models, suspension design is a matter of concern that also regards solar electric cars, in which, due to limited power supply, stabilization and energy conservation are of utmost importance. Considering three basic types of suspension widely adopted in road vehicle design, this study presents a preliminary comparison among MacPherson, double wishbone and leaf spring systems, aimed at pointing out the most appropriate design for the solar-powered vehicle hereby considered. It includes a finite element static stress analysis, performed with parametric values for a quarter-car model.

show abstract

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

Cited by 19 publications

References 37 publications

Virtual Testing of Counterbalance Forklift Trucks: Implementation and Experimental Validation of a Numerical Multibody Model

Virtual Testing of Counterbalance Forklift Trucks: Implementation and Experimental Validation of a Numerical Multibody Model

Wheel Alignment of a Suspension Module Unit Using a Laser Module

Static stress analysis of suspension systems for a solar-powered car

Contact Info

Product

Resources

About