Design and Simulation of Automotive Seat Height Adjuster Driving Mechanism Based on Multi-Body Dynamics

2014 ◽  
Vol 592-594 ◽  
pp. 2282-2286 ◽  
Author(s):  
Rahul Dilip Nandurkar ◽  
Akash Mohanty ◽  
P. Barath
Keyword(s):  
Factor Of Safety ◽  
Analytical Calculation ◽  
Design Tool ◽  
Driving Mechanism ◽  
Simulation Tool ◽  
Seat Height ◽  
Body Dynamics ◽  
Dynamic Software ◽  
Multi Body ◽  
Body Dynamic

The paper presents a technique to simulate driving mechanism in automotive seat height adjuster. Simulation is done using multi-body dynamic software ADAMS. The exercise included development of an accurate model using design tool. The design model is then converted to simulation tool. Selected operating force is applied and simulated. The area of focus is forces between two gear meshing parts. Simulation result is then compared with analytical calculation. Validation is also made for the considered factor of safety.

scholarly journals Research on Coupled Dynamic Model of Tracked Vehicles and Its Solving Method

2015 ◽  
Vol 2015 ◽  
pp. 1-10
Author(s):  
Yuliang Li ◽  
Chong Tang
Keyword(s):  
Dynamic Performance ◽  
Tractive Force ◽  
Actual Structure ◽  
Discrete Method ◽  
Tracked Vehicles ◽  
Coupled Equations ◽  
Calculation Results ◽  
Dynamic Software ◽  
Multi Body ◽  
Body Dynamic

In order to conveniently analyze the dynamic performance of tracked vehicles, mathematic models are established based on the actual structure of vehicles and terrain mechanics when they are moving on the soft random terrain. A discrete method is adopted to solve the coupled equations to calculate the acceleration of the vehicle’s mass center and tractive force of driving sprocket. Computation results output by the model presented in this paper are compared with results given by the model, which has the same parameters, built in the multi-body dynamic software. It shows that the steady state calculation results are basically consistent, while the model presented in this paper is more convenient to be used in the optimization of structure parameters of tracked vehicles.

Kinematic Formulation of Mooring Platform During Collisions Based on Multi-Body Dynamic Theory

2018 ◽  
Author(s):  
Qiuwan Duan ◽  
Yang Yang
Keyword(s):  
Finite Element Method ◽  
Impact Force ◽  
Dynamic Theory ◽  
Kinematics Analysis ◽  
Body Dynamics ◽  
Load Analysis ◽  
Multi Body ◽  
The Impact ◽  
Analytical Expressions ◽  
Body Dynamic

When a platform is operating in a mooring, various vessels that frequently pass by result in severe accidental collisions of the platform. Thus, the kinematic response of the mooring platform should be investigated. A new analytical method, including a load analysis and kinematics analysis, is proposed in this paper. In the load analysis, the impact force is calculated using finite element method (FEM). In the kinematic analysis, closed-form analytical expressions based on multi-body dynamics are derived with the impact force as an input. Furthermore, the expressions are improved considering the fluid effect. A series of collision cases are implemented to validate the proposed method by FEM. The kinematic results solved by the proposed method agree well with FEM, which illustrates that the method is feasible and accurate. However, the proposed method taking around 30s, which is much shorter than 7200s by FEM, is proved to be more efficient.

Research on Running Stability of the Rail Vehicle Based on SIMPACK

2013 ◽  
Vol 328 ◽  
pp. 589-593
Author(s):  
Li Hua Wang ◽  
An Ning Huang ◽  
Guang Wei Liu
Keyword(s):  
Dynamic Model ◽  
Optimization Design ◽  
Dynamic Performance ◽  
Running Speed ◽  
Design And Optimization ◽  
Rail Vehicle ◽  
Body Dynamics ◽  
Multi Body ◽  
Body Dynamic ◽  
Track Irregularities

There are higher requirements on running stability of the rail vehicle with the incensement of the running speed. The running stability is one of the important indicators of evaluating the dynamic performance of the rail vehicle. In this paper, the whole multi-body dynamic model of the rail vehicle was proposed based on the theory of multi-body dynamics in the software of Simpack. And the lateral and vertical vibrate accelerations of the rail vehicle were simulated when it was inspired by the track irregularities. Then the running stabilities of the rail vehicle were estimated accurately. This will propose basis on the improving design and optimization design of the whole rail vehicle.

Balance and Vibration Analysis on an in-Line Five Cylinders Engine

2013 ◽  
Vol 694-697 ◽  
pp. 297-301
Author(s):  
Shi Yu Li ◽  
Zhao Cheng Yuan ◽  
Jia Yi Ma ◽  
Meng Liu ◽  
Ying Xiao Yu
Keyword(s):  
Vibration Analysis ◽  
Balance System ◽  
Dynamic Software ◽  
Multi Body ◽  
Balance Property ◽  
Body Dynamic

Based on an existing in-line six cylinders engine, this paper built a model of in-line five cylinders engine, and analyzed this engine’s balance property in theory. In order to improve the balance of this in-line five cylinders engine, a kind of double-shaft balance system was used, and it turned out to be effective by simulating with multi-body dynamic software-AVL Excite.

Simulation Analysis on Ride Comfort of Heavy Vehicle

2013 ◽  
Vol 339 ◽  
pp. 425-429 ◽  
Author(s):  
Song Wang ◽  
Da Wei Liu ◽  
Wei Liu
Keyword(s):  
Evaluation Method ◽  
Ride Comfort ◽  
Simulation Analysis ◽  
Dynamics Simulation ◽  
Heavy Vehicle ◽  
Superposition Method ◽  
Body Dynamics ◽  
Ride Comfort Evaluation ◽  
Multi Body ◽  
Body Dynamic

In this paper, a detailed rigid-flexible coupling multi-body dynamic model of heavy vehicle was established using multi-body dynamics method, and B class road model was built using harmonic superposition method. Then, the platform of heavy vehicle dynamics simulation was established. The driver seat acceleration and tire dynamic load were simulated at different speeds under the input of different random road excitations. According to the ride comfort evaluation method provided by ISO2631-1, total weighted root-mean-square (RMS) acceleration evaluation method was used to evaluate the ride comfort of heavy vehicle at different ride speeds.

Analysis of Static Stability of Articulated Hydraulic Excavator with Two Degree of Freedom

2012 ◽  
Vol 430-432 ◽  
pp. 1663-1666
Author(s):  
De Xin Sun ◽  
Xin Hui Liu
Keyword(s):  
Working Conditions ◽  
Geometric Model ◽  
Static Stability ◽  
Degree Of Freedom ◽  
Hydraulic Excavator ◽  
Lateral Stability ◽  
Dynamic Software ◽  
Multi Body ◽  
Two Degree Of Freedom ◽  
Body Dynamic

In this paper, the geometric model of the hydraulic excavator with two degree of freedom was built, and then the dynamic model based on the multi-body dynamic software RecurDyn was built, and then the lateral stability and longitudinal stability of the hydraulic excavator on different gradients were analyzed, the result showed the tipping feather of the hydraulic excavator truly, and this paper provides guidance for choosing the hydraulic excavator’s working conditions.

Analysis on Curve Negotiation Ability of the Rail Vehicle Based on SIMPACK

2013 ◽  
Vol 721 ◽  
pp. 551-555 ◽  
Author(s):  
Li Hua Wang ◽  
An Ning Huang ◽  
Guang Wei Liu
Keyword(s):  
Dynamic Performance ◽  
Lateral Force ◽  
Lateral Stability ◽  
Rail Vehicle ◽  
Body Dynamics ◽  
Curve Track ◽  
The Stability ◽  
Multi Body ◽  
Body Dynamic ◽  
Curve Negotiation

The curve negotiation ability and lateral stability are the important and contradictory indicators when evaluating the dynamic performance of the rail vehicle. And in order to study the stability of the rail vehicle, its curve negotiation ability will be studied firstly. In this paper, the whole multi-body dynamic model of the rail vehicle was proposed based on the theory of multi-body dynamics in the software of Simpack. And the lateral force, derailment and overturning coefficient of the rail vehicle when it passed through a specific curve track with specific speed. Then the curve negotiation ability of the rail vehicle was estimated accurately.

Fatigue Strength Analysis of Internal Combustion Engine Crankshaft Based on Dynamic Simulation

2012 ◽  
Vol 442 ◽  
pp. 281-285
Author(s):  
Na Liu ◽  
Guo Xiang Li ◽  
Shuai Guo Lang ◽  
Yu Ping Hu ◽  
Xiao Ri Liu
Keyword(s):  
Fatigue Strength ◽  
Dynamic Stress ◽  
Combustion Engine ◽  
Strength Analysis ◽  
Safety Coefficient ◽  
Working Cycle ◽  
Body Dynamics ◽  
Multi Body ◽  
Engine Crankshaft ◽  
Body Dynamic

This paper established multi-body dynamic model of block-crankshaft system by method of finite element substructure and multi-body dynamics, and carried out the distribution of dynamic stress acting on the crankshaft in a working cycle and on this basis carried out the fatigue strength analysis, then received the fatigue safety coefficient and fatigue life data of each part of the crankshaft.

Rigid-Elastic Coupling Multi-Body Dynamics Modeling for a Car and Analysis Optimization of Understeer

2014 ◽  
Vol 490-491 ◽  
pp. 858-862
Author(s):  
Tian Ze Shi ◽  
Deng Feng Wang ◽  
You Kun Zhang ◽  
Hong Liang Dong
Keyword(s):  
Dynamic Model ◽  
Simulation Analysis ◽  
Elastic Coupling ◽  
Dynamics Modeling ◽  
Suspension Parameters ◽  
Body Dynamics ◽  
Steering Effort ◽  
Multi Body ◽  
Body Dynamic

A rigid-elastic coupling multi-body dynamic model of a car was established. The controllability and stability including constant cornering, steering returnability and steering effort performances are analyzed. Results show that there is still a feasibility to enhance the understeer. By optimizing the suspension parameters using DOE method, the characteristic of understeer was improved. Simulation analysis indicated that the characteristics of steering effort and steering returnability were not affected due to change of suspension parameters.

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