Safety Assessment of Heave Compensator Using Multi-Body Dynamics

2015 ◽  
Vol 764-765 ◽  
pp. 364-368
Author(s):  
Sung Gu Hwang ◽  
Gwi Nam Kim ◽  
Yong Gil Jung ◽  
Sun Chul Huh
Keyword(s):  
Safety Assessment ◽  
Compensation System ◽  
Suspension System ◽  
Drilling Operation ◽  
Car Suspension ◽  
Body Dynamics ◽  
Stress And Deformation ◽  
The Stability ◽  
Heave Motion ◽  
Multi Body

Heave Compensation system minimizes vessel heave motion during drilling operation of drillship. Heave compensator plays a role as damping form heave motion of drillship such as principle spring of car suspension system. The load transfers on the parts of heave compensator. Stress and deformation of all parts is evaluated to diagnose the stability of the compensator. This study makes a decision on the safety of structure by ANSYS 12.0v workbench.

Hydraulic Sytem for Wave Compensation of Deep-Water Exploration Ship

2012 ◽  
Vol 192 ◽  
pp. 201-206
Author(s):  
Zhi Xin Chen ◽  
Shuai Liu
Keyword(s):  
Deep Water ◽  
Structural Parameters ◽  
Dynamic Performance ◽  
Wire Rope ◽  
Transmission System ◽  
Compensation System ◽  
Work Condition ◽  
Extraction Equipment ◽  
The Stability ◽  
Heave Motion

In order to reduce the influence of the bench extraction equipment from the working deep-water exploration ship when it has swing or heave movement by wind and waves, according to the work condition and the structural parameters of 3000m deep-water exploration ship, Pump-controlled type and valve-controlled type hydraulic transmission system for waves compensation of deep-water exploration ship bench extraction equipment was researched through analysing and calculating. Wire rope which drags the bench is maintained appropriate tensioning status using this wave compensation system, when bench downs to the bottom of the sea. This system can bind and release wire rope to compensate for heave motion automatically, in order to keep the stability and security of the deep-water exploration ship before bench loading the bottom. Dynamic performance of wave compensation system is improved through controlling supplementation pressure and the accumulator parameters precisely.

Modeling and Kinematics Characteristic Analysis of Twist Beam Rear Suspension Using ADAMS/Car

2010 ◽  
Vol 139-141 ◽  
pp. 1056-1059 ◽  
Author(s):  
Ai Hua Tang ◽  
Ou Jian ◽  
Guo Hong Deng
Keyword(s):  
System Analysis ◽  
Linear Method ◽  
Prototype Model ◽  
Characteristic Analysis ◽  
Rear Suspension ◽  
Simulation Techniques ◽  
Car Suspension ◽  
Body Dynamics ◽  
Toe Angle ◽  
Multi Body

The multi-body system analysis has become one of the main simulation techniques to calculate the kinematics characteristics of a car suspension under wheel travel or to build a virtual prototype model of a vehicle in order to predict the vehicle dynamics performance. The modeling of twist beam rear suspensions is always difficult for the unique structural behavior of this component. A non-linear method based on multi-body dynamics software (ADAMS/Car) was used to represent the twist beam within the suspension system. The kinematics characteristic analysis of the rear suspension was realized by means of ADAMS/Car. The main suspension parameters (toe angle, camber angle and wheel track variation) were calculated by changing wheel travel. The result shows that the method of suspension kinematics analysis by using ADAMS/Car can be used in the design of suspensions conveniently.

The Analysis of Amphibious Vehicle Handling Stability Based on ADAMS/Car

2014 ◽  
Vol 1006-1007 ◽  
pp. 294-297 ◽  
Author(s):  
Zhi Ming Yan ◽  
Jian Jun Cai ◽  
Su Qin Qu ◽  
Fang Fang Zhai ◽  
An Rong Sun ◽  
...  
Keyword(s):  
Input Pulse ◽  
Suspension System ◽  
Dynamics Model ◽  
Vehicle Handling ◽  
Rear Suspension ◽  
Front Suspension ◽  
Stability Performance ◽  
Body Dynamics ◽  
Simulation Results ◽  
Multi Body

In this paper, a multi-body dynamics model of amphibious vehicle is established in terms of dynamic simulative software ADAMS/Car. The front and rear suspension system are studied and analyzed respectively. The handling stability performance of front suspension is simulated under step steering input, pulse steering input, steady turning, and meandered test in related to specifications. According to the simulation results, the handling stability of amphibious vehicle is evaluated objectively.

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.

scholarly journals Modular design and analysis of the x-by-wire center point steering independent suspension for in-wheel electric vehicle

2018 ◽  
Vol 10 (6) ◽  
pp. 168781401877758
Author(s):  
Cheng Chi ◽  
Ying Xu ◽  
Gang Xu ◽  
Biyun Cheng ◽  
Jianhao Shen
Keyword(s):  
Large Scale ◽  
Modular Design ◽  
Steering System ◽  
Suspension System ◽  
Parameter Design ◽  
Dynamics Model ◽  
Center Point ◽  
Body Dynamics ◽  
Center Axis ◽  
Multi Body

In this article, a new design scheme of x-by-wire steering suspension system is proposed, which aims to solve the adaptation problem of the traditional steering system, suspension system, and the electric wheel. It meets the requirement of four-wheel independent steering function with large scale. The design keeps wheel steering center axis to coincide with the virtual wheel kingpin, thereby realizing the application of the center point steering independent suspension system in electric wheels. In addition, modular design is adopted to reduce the coupling between the system and the car body, thereby realizing the generalization of the front and rear steering suspension system, and it also decreases the number of components. Furthermore, the theoretical analysis and parameter design of the self-aligning torque of the suspension are carried out. The multi-body dynamics model of system is established, and the performance is simulated in both time domain and frequency domain. The comparison test shows that the center point steering independent suspension has higher feasibility. Finally, a prototype of the system is developed, which provides a new idea for the designing of chassis for electric vehicles.

Modeling and Control of a Nonlinear Active Suspension Using Multi-Body Dynamics System Software

2014 ◽  
Vol 67 (1) ◽  
Author(s):  
M. Fahezal Ismail ◽  
Y. M. Sam ◽  
S. Sudin ◽  
K. Peng ◽  
M. Khairi Aripin
Keyword(s):  
Ride Comfort ◽  
Active Suspension ◽  
Suspension System ◽  
Ride Quality ◽  
System Software ◽  
Composite Nonlinear Feedback ◽  
Modeling And Control ◽  
Body Dynamics ◽  
Multi Body ◽  
And Control

This paper describes the mathematical modeling and control of a nonlinear active suspension system for ride comfort and road handling performance by using multi-body dynamics software so-called CarSim. For ride quality and road handling tests the integration between MATLAB/Simulink and multi-body dynamics system software is proposed. The control algorithm called the Conventional Composite Nonlinear Feedback (CCNF) control was introduced to achieve the best transient response that can reduce to overshoot on the sprung mass and angular of control arm of MacPherson active suspension system. The numerical experimental results show the control performance of CCNF comparing with Linear Quadratic Regulator (LQR) and passive system. 

Dynamic Optimization of a Single-Seater Car Suspension System

2014 ◽  
Vol 658 ◽  
pp. 147-152
Author(s):  
Vlad Totu ◽  
Cătălin Alexandru
Keyword(s):  
Dynamic Optimization ◽  
Suspension System ◽  
Software Environment ◽  
Front Suspension ◽  
The Road ◽  
Car Suspension ◽  
Design Variables ◽  
Systems Software ◽  
Road Profile ◽  
Multi Body

This work deals with the multi-objective dynamic optimization of the suspension system used for the front wheels of a single-seater vehicle. A half-car model is developed, considering the front suspension system mounted, while the rear suspension is replaced with a fictive spherical joint that is placed at the rear axle level. The purpose of the dynamic optimization is to minimize the chassis oscillations (yaw, pitch and roll), the monitored value for each design objective being the root mean square (RMS) during the dynamic simulation. The locations of some important attachments from the suspension system are used as design variables for the dynamic optimization. The dynamic model is analyzed in the passing over bumps regime, the wheels being anchored on driving actuators, whose motion simulate the road profile. Specific modules of the MBS (Multi-Body Systems) software environment MSC.ADAMS are used in this study.

Analysis of Satellite Coupled Dynamics Simulation Based on the Virtual Lab

2013 ◽  
Vol 850-851 ◽  
pp. 387-390
Author(s):  
Wen Zheng
Keyword(s):  
Material Selection ◽  
Rigid Body Dynamics ◽  
Dynamics Simulation ◽  
Prototype Model ◽  
Fatigue Reliability ◽  
Satellite Design ◽  
Virtual Lab ◽  
Body Dynamics ◽  
Stress And Deformation ◽  
Multi Body

Based on the Virtual. Lab software, this paper used multi-rigid body dynamics and soft multi-body dynamics theory as the foundation to establish the satellite coupled virtual prototype model including rotary table, rotating arm and the antenna. The simulation model is used to analyze the influence of the flexible rotary arm body on the satellite and obtain the rotating arm stress and deformation under the coupled conditions, which provides theory basis for the satellite design, the material selection of satellite rotary arm and other key component, and strength check under coupling dynamic load conditions. At the same time, this provides data support for the fatigue reliability research of future satellite key component.

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