Stiffness and Deformation of Mechanisms with Locally Flexible Bodies: A General Method Using Expanded Passive Joints

Moreno, Gonzalo; Frantz, Julio Cesar; Nicolazzi, Lauro Cesar; Vieira, Rodrigo Silveira; Martins, Daniel

doi:10.1007/978-3-319-93188-3_33

Cited by 3 publications

(7 citation statements)

References 15 publications

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“…However, when the trailer model makes a turn, the torque applied on the vehicle front axle has two components, as shown in Figure 17 and Eqs. (15) and (16).…”

Section: The Chassismentioning

confidence: 99%

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Stability Analysis of Long Combination Vehicles Using Davies Method

Contreras¹,

Vieira²,

Martins³

2020

Numerical and Experimental Studies on Combustion Engines and Vehicles

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The cargo transportation in the world is mostly dominated by road transport, using long combination vehicles (LCV’s). These vehicles offer more load capacity, which reduces transport costs and thus increases the efficiency and competitiveness of companies and the country. But the tradeoff of LCV’s is their low lateral stability and propensity to roll over, which has been the focus of many studies. Most vehicle stability models do not consider the longitudinal aspects of the vehicle and the road, such as the stiffness of the chassis, the gravity center location, and the longitudinal slope angle of the road. But, the use of three-dimensional models of vehicles allows a more rigorous analysis of vehicle stability. In this context, this study aims to develop a three-dimensional mechanism model representing the last trailer unit of an LCV under an increasing lateral load until it reaches the rollover threshold. The proposed model considers the gravity center movement of the trailer, which is affected by the suspension, tires, fifth-wheel, and the chassis. Davies method has proved to be an important tool in the kinetostatic analysis of mechanisms, and therefore it is employed for the kinetostatic analysis of the three-dimensional mechanism of the trailer.

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“…However, when the trailer model makes a turn, the torque applied on the vehicle front axle has two components, as shown in Figure 17 and Eqs. (15) and (16).…”

Section: The Chassismentioning

confidence: 99%

“…To model this system the following consideration is considered: leaf springs are assumed as flexible mechanical components with an axial deformation and a small shear deformation, and can be represented by prismatic joints P supported in revolute joints R [16].…”

Section: Kinematic Chain Of the Suspension Systemmentioning

confidence: 99%

Stability Analysis of Long Combination Vehicles Using Davies Method

Contreras¹,

Vieira²,

Martins³

2020

Numerical and Experimental Studies on Combustion Engines and Vehicles

Self Cite

View full text Add to dashboard Cite

show abstract

“…1 is used to lower and retract the landing gear on small airplanes. If there are up to two different components of forces acting on the tire-ground interface (P x -traction or brake force, and P y -normal force); determine the normal forces ( F n ) and the shear forces ( F p ) acting on the links, and the torque ( T x ) required to drive the link and to maintain the position of the mechanism [14], take into account that when the traction force is applied, the small shear deformation of the tire, it changes the point of application of the forces [15].…”

Section: Case Studymentioning

confidence: 99%

“…Using the Extended Passive Joints Method (EPJM) [15], the mechanism ( Fig. 1) can be represented by the kinematic chains shown in Fig.…”

Section: Case Studymentioning

confidence: 99%

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Stress Analysis of a Landing Gear Using the Davies Method

Moreno

Peña

Gualdrón

2020

Period. Polytech. Mech. Eng.

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Structure and mechanism analysis often involves the use of advanced simulation programs, which are not always available to users. The Davies method has proven to be an efficient and easily applied tool in this type of analysis, allowing the obtaining of the stresses present in the links and the necessary torque to keep the device in optimal operative conditions. All these standards will set the foundations for the development and proper design of the mechanism. Taking into account the afore mentioned, this article describes in detail the use and applications of the Davies method for stress and kinematic analysis of a landing gear.

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Usinagem Robotizada: Análise da capacidade de forças de robôs cooperativos

Cesar Frantz,

Simas,

Martins

2023

Anais Do XXV Colóquio De Usinagem

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A capacidade de força em robôs para usinagem robotizada é um tópico essencial para garantir a precisão e a eficiência das operações de usinagem. A compreensão das limitações de força dos robôs é crucial para evitar danos às peças e aos próprios equipamentos, bem como para otimizar o desempenho das operações. Para isso, este artigo tem como objetivo principal avaliar a capacidade de força de robôs em operações de furação. Para alcançar o objetivo proposto, adotou-se uma metodologia que incorpora três abordagens principais: o método de Davies, a Teoria de Helicoides e o método da Capacidade de Força. Os principais resultados obtidos neste estudo são os poliedros da capacidade de força de robôs cooperativos em operações de furação. A determinação da capacidade de força de robôs é de extrema importância para a usinagem robotizada. Os poliedros obtidos neste estudo fornecem informações valiosas para a programação e o controle de robôs em operações de furação, garantindo a integridade das peças e a eficácia das operações.

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Stiffness and Deformation of Mechanisms with Locally Flexible Bodies: A General Method Using Expanded Passive Joints

Cited by 3 publications

References 15 publications

Stability Analysis of Long Combination Vehicles Using Davies Method

Stability Analysis of Long Combination Vehicles Using Davies Method

Stress Analysis of a Landing Gear Using the Davies Method

Usinagem Robotizada: Análise da capacidade de forças de robôs cooperativos

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