Double Wishbone Independent Suspension Research Articles

Research on a New Type of Catamaran with Shock-Absorbing and Energy-Saving Suspension Structure

At present, the suspended structure catamaran is composed of the main ship on the water and the side bodies symmetrically distributed on the hull. Such a structure avoids the direct contact of the main ship with the water surface, and has good stability. In this paper, a shock absorption system for ships is designed. It is undertaken by the double wishbone independent suspension system, which includes the upper wishbone, the lower wishbone, the bracket, the shock absorber and other components. The double wishbone suspension system is used in the shock absorption of this project, which can well cope with the huge impact brought by the waves. The 3D model of the hull is modeled, and the external flow field simulation of the catamaran is carried out by using starccm+ software, and the design optimization of the tail structure and thruster is realized.

Mathematical modeling and nonlinear analysis of stiffness of double wishbone independent suspension

Mathematical modeling and nonlinear analysis of stiffness of double wishbone independent suspension

Modeling and Simulation of Modular Independent Oil and Gas Suspension Mechanics

The modular independent oil and gas suspension had become the key to achieving high maneuvering off-road capability for a new generation of military special vehicles, aiming at this situation, the modeling of characteristics of modular independent suspension and oil gas spring were researched. It was proposed to use the actual gas state equation to derive the nonlinear elastic properties, and taked the double wishbone independent suspension as the main research object to complete the analytical calculation of the kinematics and dynamics of the guiding mechanism, after that the force state of each hard point coordinate was clarified. The simulation analysis of the suspension characteristics and key parameters with displacement was carried out by programming, and the mechanical influence law of the independent oil and gas suspension system was revealed, which laid a foundation for engineering design.

Design and Analysis of the Suspension for Electric Tractor

Aiming at the problems that the existing electric tractors have large ground clearance and high center of gravity,and easy rollover during driving, a double wishbone independent suspension is designed for a certain type of electric tractor. The virtual prototype model of the suspension is built by ADAMS software, and the simulation analysis and optimization are carried out to find a set of optimal wheel positioning parameters to ensure that the electric tractors have good steering stability and smooth running, which has a certain guiding effect on actual production.

Mathematical model and performance calculation of a double-wishbone independent suspension

The paper presents a mathematical model based on which performance calculations of a double-wishbone independent suspension are performed. First, the spatial motion of a rigid body was described by coordinate transformation, which provides the theoretical basis for the hard point coordinate calculation of double-wishbone suspension mechanism. After that, a mathematical model of the wheel guide mechanism has been built, and the kinematic performance and hard point reaction load were calculated. The results obtained are useful in the design of new suspension systems.

An Improved Genetic Algorithm to Optimize Spatial Locations for Double-Wishbone Type Suspension System with Time Delay

By taking account of double-wishbone independent suspension with two unequal-length arms, the coordinate values of articulated geometry are based on structural limitations and constraint equations of alignment parameters. The sensitivities of front wheel alignment parameters are analyzed using the space analytic geometry method with insight module in ADAMS® software. The multiobjective optimization functions are designed to calculate the coordinate values of hardpoints with front suspension since the effect of time delay due to wheelbase can be easily obtained by vehicle speed. The K&C characteristics have been investigated using GA solutions in the simulation environment. The camber angle decreases from 1.152° to 1.05° and toe-in angle reduces from 1.036° to 0.944°. The simulation results demonstrate that the suggested optimization method is able to satisfy the suspension motion to enhance ride comfort. Experimental results, obtained by K&C test bench, also indicate that the optimized suspension can track the desired trajectory while keeping the vehicle performance in various road conditions.

Analytical method to develop airlift equipment for Korean light tactical vehicle

The Korean light tactical vehicle (KLTV) is developed to meet the demands for a new military vehicle that fulfills certain conditions, such as multi-purpose, high mobility and survivability. Double-wishbone independent suspension is developed to improve the ride and handling performance and maximize the off-road driving performance of the new tactical vehicle. In particular, the KLTV is equipped with front and rear lifting provisions that support the vehicle safely during airlift operations. In this paper, a comprehensive analytical method to evaluate the structural safety of these components is presented. First, a vehicle dynamic model of the KLTV and a test rig for airlift simulation are developed using MSC.ADAMS/Car. Second, a finite element model of airlift kits, which are newly installed in the KLTV, is constructed. Third, stress analyses on vertical load conditions, MIL-STD-209K, and helicopter flight speeds are performed using ABAQUS. Finally, a dummy apparatus test and an actual vehicle test are conducted to verify the suitability of the airlift equipment for the KLTV. The computational method presented herein will provide useful information on the structural safety of airlift equipment during the early stages of a military-vehicle-designing process.

Double Wishbone Independent Suspension Parameter Optimization and Simulation

The wheeled armoredvehicle double wishbone independent suspension system, established the double wishbone suspension arm model, and optimized analysis. Optimization results show that: the suspension parameters optimization design, the front suspension performance has been greatly improved.

Car Suspension Simulation and Optimization

In this paper analyzed and finished optimization design. Using CATIA to establish a three-dimensional model of the car front suspension parts and made assembly. To use ADAMS/CAR build the CAR front wheel of the dynamic model of the double wishbone independent suspension system. The wheel alignment parameters were made simulation analysis. To adjust the model got the best results. The simulation test results show that the optimized parameter range not only improved the kinematics characteristics of the suspension system, more in line with the actual design requirements

Simulation Analysis and Optimization Design of Double-Wishbone Independent Suspension

The parameter modeling for the front double-wishbone independent suspension of a vehicle is set up in the development environment of ADAMS, and then, the kinematics simulation analysis for original design parameters are processed. The contribution of design parameters to the sensitivity of the double-wishbone independent suspension is analyzed and the influence of design parameters on the performance of the suspension such as the wheel alignment parameters is investigated. The optimal design for the suspension is carried on by using the experiment design method, which not only realizes the requirement for good wheel alignment parameters, but also improves the sideways displacement of wheel obviously.

Optimization and Analysis of Double Wishbone Independent Front Suspension Based on Virtual Prototype

The simulation model of the double wishbone independent front suspension with a single degree of freedom is built based on the dynamics simulation software ADAMS/VIEW in this paper. Through the optimization and analysis of the upper cross arm (UCA) and the low cross arm (LCA), we can achieve the goal of decreasing the sideways displacement and the tire wear.

Simulation and Optimization of FSAE Racing Suspension

In this paper, kinematics analysis software ADAMS/Car was used to establish the FSAE car racing double wishbone independent front suspension simulation model, kinematics simulation analysis has been used to get the wheel beats of each parameters variation. For the simulation results, part of the suspension of the hard points position have been optimized by ADAMS/Insight module, to improve the characteristics of the suspension movement.

Kinematic Analysis and Structure Parameter Optimization of Automobile Wishbone Independent Suspension

Abstract A multi-body dynamics calculation model for air suspension guide mechanism of car is established, which analyses the motion model and its application of guide mechanism on car double wishbone independent suspension by using the basic theory of rigid body motion, and then carries out kinematics analysis to make the design work rational, simple and accurate. The establishment and optimized analysis of the structure parametric design model, which is used for the objective function of minimum variation of the caster angle, kingpin inclination angle, wheel camber, wheel toe-in angle and wheel tread, gets the reasonable and optimization design scheme of structure parameters for air suspension guide mechanism, and provides a theoretical basis for further improvement of this automobile suspension system.

한국형 소형전술 시제차량의 내구성능 평가

Since the demand for new military vehicle to fulfill the necessary conditions such as multi-purpose, high-mobility, and survivability has raised continuously from the army, the prototype of a Korean light tactical vehicle was developed to meet these requirements using our own technology. In particular, the new tactical vehicle was equipped with a double wishbone independent suspension to improve ride and handling and maximize off-road driving performance. In this paper, a comprehensive virtual durability process to evaluate the service life of the prototype is presented. A reliability of the trimmed body model based on CATIA data was verified by comparison result between mode analysis and modal test. The dynamic model was constructed using ADAMS/Car, and then the weight distribution and lateral slope driving performance of it were compared with the results of static weight and lateral slope tests. The validity of the VTL(Virtual Test Lab) was checked with test results from the 3-inch spaced impact road. The durability performances of trimmed body and suspension components were evaluated through MSM(Modal Superposition Method) fatigue analysis. It is shown that the virtual durability process could be a helpful tool to find out the weak areas and improve their structures in developing new military vehicle.

Research on the Mathematical Model of the Double Wishbone Independent Suspension

The paper put forward to research the mathematical model of double wishbone independent suspension. First,the nonlinear elastic performance of oil gas spring was deduced through real gas state equation. After that, Kinematics principle of double wishbone independent suspension was researched, it was help for understanding how to design the guide mechanism of suspension. In the end,the external influence factors on suspension were analyzed, the conclusion could be used as a reference for design of the device.

Kinematic Analysis and Optimization Design of Vehicle Suspension System

In order to study on the kinematic characteristic of a light vehicle suspension system, the kinematic simulation model of the whole double-wishbone independent suspension was built using ADAMS software. In order to reflect the actual running condition of the vehicle, the random excitation of the test platforms of the left and right wheels were created, respectively. The variable regularity of the kinematic characteristic parameters was uncovered in the process of the suspension motion. The irrationality of the suspension guiding mechanism design was pointed out through simulation and analysis, and the existent problems of the guiding mechanism were optimized and calculated. The results show that there is small variation of the front wheel orientation parameters before and after optimization, and all of them are within the design requirement ranges. The variation of the WCD (wheel center distance) and FWSS (front wheel sideways slippage) are bigger, and still within the ideal ranges after optimization. The anticipated optimization goal is achieved, and an important basis is provided for the improving design of the light vehicle suspension.

Research on Kinematic Performance Simulation of Double-Wishbone Independent Suspension Based on CATIA

The vector and coordinate transformation method are applied to establish the constrain equations of the key points. Based on the existing data of suspension, applying the software CATIA, 3-D suspension model was established. The kinematic performance simulation of double-wishbone suspension model was calculated by setting the rational wheel-hop range. Based on the software MATLAB, the kinematics performance variation curves of the wheel alignment parameters were obtained, the variation laws were analyzed and the reasonableness of data were valuated.

Kinematic Performance Analysis of the Double Wishbone Independent Front Suspension

The vector method is applied to study the kinematic performance of the double wishbone independent front suspension.The model of the right front suspension is established in this paper, on this basis, the local motion reference frames of the upper and lower arms are established by using the coordinate transformation method. Therefore, the space relations between of the arms can be transformed into the plane motion of their respectively local reference frame by this method. Furthermore, the variable law of the wheel alignment parameters with the swing angle φ of the lower arm, is obtained through establishing the constrain equations of the key points.

Optimization Design of Double Wishbone Independent Suspension Based on ADAMS

This document explains and demonstrates how to establish a double wishbone independent suspension based on ADAMS and improve the vehicle’s handing stability and riding comfort by modify the hard point parameters of the suspension.

Kinematic Analysis and Optimum Design of Double Wishbone Independent Suspension Based on Adams\View

In this paper the model of a double wishbone independent suspension was established by using ADAMS\view as an analysis platform and the kinematics simulation was performed by way of parametric modeling. By analyzing the dimension parameters of suspension, i.e. the method of DOE (Design of Experiments) supplied by the software, the parameters which were the most important influence of the sideways displacement of wheel had been ascertained: Kingpin length, kingpin Inclination and caster angle. Ultimately the key parameters were optimized with the optimal object of minimizing the absolute value of sideways displacement, and the final test results met design requirements.