Design and Spread Analysis of a New Deployable Bridge Section

2013 ◽  
Vol 639-640 ◽  
pp. 206-210
Author(s):  
Duan Cai Yuan ◽  
Qi Gao Hu ◽  
Guang Xu Sun

For the volume of the new prefabricated bridge with integral structure is huge and transportation and storage are difficult, scissors mechanism driven by hydraulic cylinder is presented to bridge design. Wth theoretical analysis, the position of the node, velocity and acceleration are analyzed. Using the ADAMS software, the whole model of deployable bridge section is established. The multi-body dynamic simulation of the whole model is studied. The simulation results are compared with those of theoretical analysis. The maximum error of them is 2.26%. The methods and conclusions are available for the design of developable bridge section.

2009 ◽  
Vol 16-19 ◽  
pp. 806-810 ◽  
Author(s):  
Li Dai ◽  
Jian Wang ◽  
Bo Zhao ◽  
Jie Liu

For the concrete pump truck, the movements of the arm and the hydraulic cylinder are analyzed respectively with multi-body dynamic theory. And with the applying of PD control theory, the dynamic equation of arm system is also built. And according to the numerical solution of the equation, it is proved that the dynamic equation can describe every dynamic character of the concrete pump truck well.


2013 ◽  
Vol 427-429 ◽  
pp. 266-270
Author(s):  
Yue Gang Wang ◽  
Zhao Yang Zuo ◽  
Jian Guo Wu ◽  
Hai Bo Li

In order to study the dynamic characteristics of centrifuge facility-vibration shaker system, In the establishment of centrifuge facility-vibration shaker system multi-body dynamic model based on virtual mocking technology, the virtual dynamic model of the entire centrifuge facility-vibration shaker system more close to reality is built up by the transmission of finite element of flexible centrifuge arm. This paper describes how to build the 3-D virtual prototype of centrifuge facility-vibration shaker system by using Pro/e and ADAMS software, and how to create the modal neutral file of the centrifuge arm by using ANSYS software. Considering the system as a rigid-flexible coupling system, the dynamical simulation is carried out, and the results are benefit for the further research of its kinetic behavior, dynamic and variable characteristics basis and the design of such system.


2011 ◽  
Vol 383-390 ◽  
pp. 7238-7245 ◽  
Author(s):  
Yu Qin Zhao ◽  
Run Sheng Zhang ◽  
Li Ye Li ◽  
Zhi Jun Zhang

Analyzing the structural property of model vehicle, a multi-body dynamic model of a full independent 4-wheel-drive electric vehicle(4WD EV) is established by using automatic dynamic analysis of mechanical systems (ADAMS) software, and an electric motor and drive-control system is established under Matlab/Simulink environment. Co-simulation based on the two soft wares is under control of the equality power driving force distribution strategy controller. The results of co-simulation show that the co-simulation is effective and the model’s rationality is validated. It could be applied in the following experiments in complex circumvents, and give theoretic supports.


2012 ◽  
Vol 472-475 ◽  
pp. 2152-2155
Author(s):  
Jie Meng ◽  
Kai Zhang ◽  
Bao Cheng Yang

A vehicle model is built using the multi body dynamics software-ADAMS/ Car first. And then the vehicle’s performance of the constant radius cornering and ISO lane change is simulated. According to the simulation results, the handling stability is evaluated. The result shows that the ADAMS software can provide accurate simulation test and optimize the design plan of vehicle product.


2012 ◽  
Vol 568 ◽  
pp. 138-141
Author(s):  
Li Dai ◽  
Yun Gong Li ◽  
Yu Liu ◽  
Jian Wang

The concrete pump truck integrates transportation with pouring process ,which is characterized with flexibility, facility and celerity in civil engineering. As for the concrete pump truck, the arm system is the most important because the rationality of the arm directly influences the performance and pouring position of the truck in its application in civil engineering. For the arm system of the concrete pump truck, the movement of the arm system and the hydraulic cylinder are analyzed respectively with multi-body dynamic theory. By using numerical arithmetic to resolve the dynamic equation, the terminal track of the arms is analyzed. It shows that the kinetic equation built by multi-body dynamics can describe the dynamic characteristics of pump truck exactly.


Author(s):  
Weizhong Tan ◽  
Cong Zhang ◽  
Zhe Tian ◽  
Xinping Yan

This paper is based on the multi-body dynamic coupling theory and finite element theory. A multi-body dynamic coupling model of the large-scale vessel is built and the torsion vibration characteristics of slow-speed ship propulsion shafting are analyzed. The measurements of shafting torsional vibration in the real ship are compared with the results from the simulation model. Then, the differences between measurements and simulation results are analyzed in multi-orders. The analysis result indicates that the simulation results are almost the same with measurements obtained from the real ship, which verify the correctness and feasibility of the model. At the same time, the influence of ship hull deformation on the torsion vibration of ship propulsion shafting is discussed by Adams/Vibration. The analysis shows that the ship hull deformation could cause the significant increase of torsional vibration of ship propulsion shafting.


2018 ◽  
Vol 2018 ◽  
pp. 1-16 ◽  
Author(s):  
Zhihua Zhang ◽  
Shoushan Luo ◽  
Hongliang Zhu ◽  
Yang Xin

Wireless sensor networks (WSNs) are facing the threats of clone attacks which can launch a variety of other attacks to control or damage the networks. In this paper, a novel distributed clone detection protocol with low resource expenditure is proposed for randomly deployed networks. The method consisting of witness chain establishment and clone detection route generation is implemented in the nonhotspot area of the network organized in a ring structure, which balances the resource consumption in the whole network. The witness chains and detection routes are in the centrifugal direction and circumferential direction, respectively, which can ensure the encounter of witnesses and detection routes of nodes with the same ID but different positions to detect clone attacks. Theoretical analysis demonstrates that the detection probability can be up to 1 with reliable witnesses. Moreover, both theoretical analysis and simulation results manifest that the proposed method can achieve better network lifetime and storage requirements with low resource expenditure and outperforms most methods in the literature.


2010 ◽  
Vol 29-32 ◽  
pp. 819-823 ◽  
Author(s):  
Shi Hong Wu ◽  
Bu Zhang ◽  
Feng Yu He ◽  
Bao Fa Li

The residues cutting and ridge cleaning equipments of Ridge-tillage planter are important working parts which can prevent no-tillage planter from clogging and ensure good quality of seeding. For this, How to use ADAMS software to establish the simulation model of residues cutting and cleaning equipment is introduced, and the simulation analysis of its cutting residues and cleaning the ridge is done in this paper. Simulation results show that running results are in line with the theoretical analysis, which improved the design of residues cutting and ridge cleaning equipment of No-tillage planter.


2021 ◽  
Vol 224 ◽  
pp. 108729
Author(s):  
Shujie Zhao ◽  
Xun Meng ◽  
Huajun Li ◽  
Dejiang Li ◽  
Qiang Fu

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