Co-Simulation of Wheel Loader Working Mechanism

2010 ◽  
Vol 43 ◽  
pp. 72-77
Author(s):  
Xiao Bin Ning ◽  
Ji Sheng Shen ◽  
Bin Meng
Keyword(s):  
System Simulation ◽  
Body System ◽  
Simulation Test ◽  
Working Mechanism ◽  
Wheel Loader ◽  
Construction Machinery ◽  
Internal Forces ◽  
Wheel Loaders ◽  
Multi Body ◽  
Flexible Component

The purpose of the work is to accurately calculate the forces acting on the working mechanism of wheel loader when excavating granulated material. In order to examine mobile machines movement processes, MSC.ADAMS is used to carry out multi-body system simulation and hydraulics sub-system simulation. Because the flexibility of the component of the working mechanism of wheel loader can not be neglected, ANSYS is used to compute the data describing the behaviour of the flexible component of working mechanism of wheel loader. Based on the Fundamental Earthmoving Equation, this paper describes a methodology and basic formulations of forces between the tool and the material to be moved as well as the internal forces in the pile to be dug from. The method has been implemented in an MSC.ADAMS model of a working mechanism wheel loader. The numerical simulation test on LCM(Linyi Construction Machinery) Wheel Loaders under various position of working equipment will be done to predict the forces acting on the machines during digging cycles.

scholarly journals Combined simulation of heavy truck stability under sudden and discontinuous direction change of crosswind with computational fluid dynamics and multi-body system vehicle dynamics software

2018 ◽  
Vol 10 (7) ◽  
pp. 168781401878636
Author(s):  
Zhe Zhang ◽  
Jie Li ◽  
Wencui Guo
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Closed Loop ◽  
System Simulation ◽  
Open Loop ◽  
Lateral Acceleration ◽  
Body System ◽  
Direction Change ◽  
Heavy Truck ◽  
Multi Body

The method of yaw model is used to establish aerodynamic property of heavy truck in computational fluid dynamics and wind tunnel test. A model of multi-body system simulation for heavy truck is built based on design and measure data from body, driving system, steering system, braking system, and powertrain system with TruckSim. Aerodynamic reference point of Society of Automotive Engineers (SAE) and aerodynamic coefficients are as the interface to integrate computational fluid dynamics and multi-body system simulation. A sudden and discontinuous direction change of crosswind is set up in multi-body system simulation, and dynamic performance of the heavy truck is performed by open-loop and closed-loop simulation. Under the given simulation case, lateral offset of the truck for open-loop simulation is 1.55 m and more than that for closed-loop simulation; the roll rate range of both simulations is −1.49°/s to 1.695°/s, the range of lateral acceleration is −0.497 m/s2 to 0.447 m/s2 in open-loop simulation, the range of lateral acceleration is −0.467 m/s2 to 0.434 m/s2 in closed-loop simulation; the range of yaw rate is −1.36°/s to 1.284°/s in open-loop simulation, the range of yaw rate is −0.703°/s to 0.815°/s in closed-loop simulation. The results show that combined simulation of the heavy truck stability can be completed by computational fluid dynamics and multi-body system software under sudden and discontinuous direction change of crosswind.

Modeling and Simulation Study on Crosswind Stability of the High-Speed Bus

2011 ◽  
Vol 42 (11) ◽  
pp. 44-50 ◽  
Author(s):  
Qin Dong-chen ◽  
Xu Yi-cun ◽  
Zhu Qiang ◽  
Yu Li
Keyword(s):  
Simulation Study ◽  
High Speed ◽  
Reference Data ◽  
Wind Pressure ◽  
Body System ◽  
Simulation Test ◽  
Pressure Center ◽  
Straight Line ◽  
Crosswind Stability ◽  
Multi Body

Based on multi-body system dynamics, the model of Yutong high-speed bus was built by ADAMS/Car software to analyse the influence of crosswind on the high-speed bus' handing stability. Seven discrete wind pressure centers effects on the chasis were taken into account, so the crosswind model with a shifting pressure center was achieved. After improving the standard of the crosswind sensitivity test that is prescribed by American ESV (Experimental safety vehicle), the crosswind simulation tests with pressure center's shift and the immobile pressure center were carried out. The high-speed straight-line simulation test without the crosswind was also completed. By comparing the results of the three tests, the test data in consideration of wind pressure center's shift was more reasonable and provided the reference data for improving the crosswind stability of the bus.

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.

Hybrid Power Systems for Construction Machinery: Aspects of System Design and Operability of Wheel Loaders

2009 ◽  
Author(s):  
Reno Filla
Keyword(s):  
Power Systems ◽  
Complex Interaction ◽  
Total System ◽  
Systematic Design ◽  
Hybrid Power Systems ◽  
Wheel Loader ◽  
Construction Machinery ◽  
Energy Conversion Systems ◽  
Wheel Loaders ◽  
Operator Workload

This paper will examine the wheel loader as a system with two parallel energy conversion systems that show a complex interaction with each other and with the power source. Using a systematic design approach, several principle design solutions for hybridization can be found. Furthermore, the human operator with his/her control actions needs to be considered as part of the total system. This paper will therefore also connect to results from ongoing and previous research into operator workload and operability.

Outer inverses and multi body system simulation

1996 ◽  
Vol 17 (7-8) ◽  
pp. 661-678 ◽  
Author(s):  
Mihai Anitescu * ◽  
Dan I Coroian * ◽  
M. Zuhair Nashed * ◽  
Florian A Potra *
Keyword(s):  
System Simulation ◽  
Body System ◽  
Multi Body
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