scholarly journals Testing Oscillation and Optimization of the Motorcycle Frame Body Using Co-Simulation Method

2021 ◽  
Vol 31 (5) ◽  
pp. 1-9
Keyword(s):  
Simulation Method ◽  
System Model ◽  
Body System ◽  
Element Analysis ◽  
Vehicle Operation ◽  
System Method ◽  
Product Design Process ◽  
Motorcycle Frame ◽  
Loading Modes ◽  
Multi Body

The article is devoted to researching the durability of motorcycle frames with calculated loads in some cases of actual vehicle operation based on Vietnamese standards. The paper uses the multi-body system method to build a dynamic model suitable for the actual test problem according to the standard and optimize the mass of the motorcycle frame by the finite element analysis. The study includes an overview and analysis when choosing a motorcycle frame commonly used in Vietnam. A motorcycle frame of Wave brand is used to calculate and test the chassis durability with different parameters. Various internal loading modes are applied to the multi-body system model to help optimize the vehicle chassis mass by using specialized software. The authors calculated the load, built a durability model with static loads in practical working situations, built a multi-object system model to investigate the vehicle dynamics problem with the standards. This paper leads to the problem of optimizing the chassis thickness to reduce the weight of the chassis. Computers and optimization tools help engineers to save much time in the product design process. Investigating product optimization helps solve problems quickly, finding the best design, assisting engineers in developing the best strategies, and reducing time and costs during prototyping and testing.

scholarly journals Impact of Increased Travel Speed of a Transportation Set on the Dynamic Parameters of a Mine Suspended Monorail

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1528
Author(s):  
Kamil Szewerda ◽  
Jarosław Tokarczyk ◽  
Andrzej Wieczorek
Keyword(s):  
Computational Model ◽  
Travel Speed ◽  
Body System ◽  
Emergency Braking ◽  
System Method ◽  
Underground Coal Mines ◽  
Program Environment ◽  
Underground Transportation ◽  
Multi Body ◽  
Transportation Routes

The method of increasing the efficiency of using one of the most common means of auxiliary transport in underground coal mines—suspended monorails—is presented. Increase of velocity is one of the key parameters to improve the efficiency and economical effect related with the underground auxiliary transport. On the other hand, increasing the velocity results in bigger value of force acting on the suspended monorail route and its suspensions. The most important issue during increasing the velocity is ensuring the required safety for the passengers and not overloading the infrastructure. In order to analyze how increasing velocity influences the level of loads of the route suspension and the steel arch loads, the computational model of suspended monorail was developed. The computational model included both the physical part (embedded in the program environment based on the Multi-Body System method) and the components of the monorail control system. Two independent software environments were cooperating with each other through the so-called co-simulation. This model was validated on the base of results obtained on the test stand. Then, the numerical simulations of emergency braking with different values of velocity were conducted, which was not possible with the use of physical objects. The presented study can be used by the suspended monorail’s producers during the designing process, and leads to increase the safety on underground transportation routes.

Joint Modeling and Simulation of the Spindle System of Hammer Crusher Based on Finite Element Analysis and Flexible Multi-Body Dynamics. Part1: Modeling

2012 ◽  
Vol 630 ◽  
pp. 291-296
Author(s):  
Yu Wang ◽  
En Chen ◽  
Jun Qing Gao ◽  
Yun Feng Gong
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
System Simulation ◽  
Geometric Model ◽  
Body System ◽  
Element Analysis ◽  
Spindle System ◽  
Body Dynamics ◽  
Multi Body ◽  
The Impact

In the past finite element analysis (FEA) and multi-body system simulation (MBS) were two isolated methods in the field of mechanical system simulation. Both of them had their specific fields of application. In recent years, it is urgent to combine these two methods as the flexible multi-body system grows up. This paper mainly focuses on modeling of the spindle system of hammer crusher, including geometric model, finite element model and multi-body dynamics (MBD) model. For multi-body dynamics modeling, the contact force between hammer and scrap steel was discussed, which is important to obtain the impact force. This paper also proposed how to combine FEA and MBS to analyze the dynamic performance of the spindle system by using different software products of MSC.Software.

Study on dynamic characteristics of boom system for balance hoist based on rigid-flexible coupling simulation

2019 ◽  
Vol 15 (2) ◽  
pp. 437-451 ◽  
Author(s):  
Yu Liu ◽  
Jie Hao ◽  
Zhihua Sha ◽  
Fujian Ma ◽  
Chong Su ◽  
...  
Keyword(s):  
Dynamic Equation ◽  
Simulation Analysis ◽  
Great Influence ◽  
System Model ◽  
Body System ◽  
Lagrange Method ◽  
Content Type ◽  
Neutral Equilibrium ◽  
The Stability ◽  
Multi Body

Purpose Aiming at the unbalancing problem of the neutral equilibrium characteristic for balance hoist in the loading process, the purpose of this paper is to establish a dynamic equation for multi-body using the Lagrange method. It is not difficult to find that the deformation of the boom system has a great influence on the stability of the whole system, through the simulation analysis of the multi-rigid-body system model. Design/methodology/approach Aiming at the unbalancing problem of the neutral equilibrium characteristic for balance hoist in the loading process, the dynamic equation for multi-body is established by Lagrange method. It is not difficult to find that the deformation of the boom system has a great influence on the stability of the whole system, through the simulation analysis of the multi-rigid-body system model. Findings Result shows that different weights have a great influence on the force deformation and vibration of the boom system of balance hoist. With the increase in lifting weight, the force and deformation of the boom system increase; lead to balance hoist unique with characteristics of indifferent equilibrium, proportional amplification, labor-saving operation will be lost, easy to cause the imbalance of balance hoist. Therefore, the appropriate increase in the basic length of the compression bar, reduction in the basic length of the tension rod and the increase stiffness of the boom system can improve the stability of balance hoist, which provides a reference for the optimization and manufacture of the balance hoist structure. Originality/value The simulation model was established by analyzing the working principle and the load condition of the balance hoist, and the simulation and dynamic characteristics of three typical working conditions are analyzed by using ADAMS; result shows that different weights have a great influence on the force deformation and vibration of the boom system of balance hoist. With the increase in lifting weight, the force and deformation of a boom system increase, lead to balance hoist unique with characteristics of indifferent equilibrium, proportional amplification, labor-saving operation will be lost, easy to cause the imbalance of balance hoist.

Methods & Prospects of Research on Flexible Multi-Body Dynamics

2013 ◽  
Vol 353-356 ◽  
pp. 3284-3287
Author(s):  
Lin Xiao Yao ◽  
Lian Yang ◽  
Lin Jian Shangguan
Keyword(s):  
Numerical Calculation ◽  
Vibration Control ◽  
Research Method ◽  
Dynamical Equation ◽  
System Model ◽  
Body System ◽  
Body Dynamics ◽  
System Vibration ◽  
Three Stages ◽  
Multi Body

This paper summarized the research method of flexible multi-body system dynamics. Three stages of flexible multi-body system model are reviewed. The paper is especially summary on modeling method of flexible multi-body system, flexible multi-body dynamical equation numerical calculation and flexible multi-body system vibration control and so on. And the paper is looked forward to further study.

Energy Absorption Configuration of Crashworthy Metro Train

2012 ◽  
Vol 466-467 ◽  
pp. 724-728 ◽  
Author(s):  
Wen Bin Wang ◽  
Li Hui Ren ◽  
He Chao Zhou ◽  
Markus Hecht
Keyword(s):  
Finite Element ◽  
Energy Absorption ◽  
Simulation Method ◽  
Element Analysis ◽  
Linear Finite Element ◽  
Deformation Velocity ◽  
Body Dynamics ◽  
Non Linear ◽  
Crashworthiness Design ◽  
Multi Body

In this paper, a simulation method based on joining non-linear finite element and multi-body dynamics is developed to solve the energy configuration of crashworthy metro train. The relationships of non-linear springs which describe characters of forces-deformation for energy absorption during crash event are obtained by using non-linear Finite Element Analysis (FEA) techniques. Then they are used in simulation for collision of two metro train sets with multi-body dynamics. Compare to the different energy absorption configuration, the results of impact force, deformation, velocity and acceleration are analyzed to assess the passive safety of whole train set. The results indicate that the joining simulation strategy is feasible and effective. It can be used to improve the metro train crashworthiness design by optimizing the energy absorption configuration.

Research on precision of modular machine tool based on computer aided multi-body system method

2018 ◽  
Vol 22 (S4) ◽  
pp. 9145-9150 ◽  
Author(s):  
Hui-qin Li ◽  
Pan Ding ◽  
Li Ding ◽  
Jing-bo Li ◽  
Xiao-juan Liu ◽  
...  
Keyword(s):  
Machine Tool ◽  
Body System ◽  
System Method ◽  
Computer Aided ◽  
Multi Body

A Fast Sea-Keeping Simulation Method for Heavy-Lift Operations Based on Multi-Body System Dynamics

2014 ◽  
Author(s):  
Hannes Hatecke ◽  
Stefan Krüger ◽  
Jakob Christiansen ◽  
Hendrik Vorhölter
Keyword(s):  
Degrees Of Freedom ◽  
Simulation Method ◽  
Suspended Load ◽  
Body System ◽  
Lagrange Equations ◽  
Six Degrees Of Freedom ◽  
Time Motion ◽  
Heavy Lift ◽  
Freely Suspended ◽  
Multi Body

This paper presents a fast numerical method to analyze heavy-lift operations of ships in short crested waves. For this purpose, a sea-keeping simulation method for the coupled motions of a heavy-lift vessel and a freely suspended load is developed. The method considers the motions of the ship in six degrees-of-freedom and the suspended load as a point mass. The coupling of the multi-rigid-body system of the ship and the suspended load is considered by solving the equation of roll motion together with the Euler-Lagrange equations of the load. This approach allows the simulation of several hours of real time motion in short crested waves within only a few seconds. Consequently, the method is particularly suitable when very long or numerous sea-keeping simulations or statistical results are required. Moreover, the method is applied to evaluate the sea-keeping capabilities of a heavy-lift vessel during a lifting operation conducted offshore in 2013.

Multi-Body Dynamics Simulation and Finite Element Analysis of the Car’s Sub-Frame

2012 ◽  
Vol 253-255 ◽  
pp. 2107-2112
Author(s):  
Jian Min Li ◽  
Chuan Yang Sun ◽  
Zhang Cheng Yang ◽  
Zu Xi Yi
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Field ◽  
Simulation Method ◽  
Dynamics Simulation ◽  
Element Analysis ◽  
Engine Load ◽  
The Finite Element Analysis ◽  
Body Dynamics ◽  
Multi Body

For the problem that car sub-frame constraint connection complex and effective load more difficult to determine, using finite element and multi-body dynamics ADAMS co-simulation method, Analyzed on a Volkswagen vehicle sub-frame, obtained the accurate load on the sub-frame which are used by engine suspension. The finite element analysis results show that engine load is the greatest impact on the sub-frame stress field, which can be reduced by increasing the area of engine and the sub-frame contacting, thereby prolong the life of sub-frame.

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