Rigid-flexible hybrid modeling and dynamic simulation of three-coordinate heavy-load transfer vehicle

2021 ◽  
Author(s):  
Junxia Jiang ◽  
Haipeng Liao ◽  
Yuxiao He ◽  
Xinyuan Zhang
Keyword(s):  
Dynamic Simulation ◽  
Load Transfer ◽  
Hybrid Modeling ◽  
Heavy Load

Dynamic Simulation Analysis of Heavy Load Starting Light Load Running Induction Motor with High-Performance

2012 ◽  
Vol 588-589 ◽  
pp. 526-529
Author(s):  
Feng Ge Zhang ◽  
Hong Yong Xia
Keyword(s):  
Induction Motor ◽  
Dynamic Simulation ◽  
Power Factor ◽  
High Performance ◽  
Induction Motors ◽  
Simulation Analysis ◽  
State Equation ◽  
Heavy Load ◽  
Operation Efficiency ◽  
Light Load

For the problem of heavy load starting induction motors in operation efficiency and power factor are low, a kind of heavy load starting light load running induction motor with high-performance is presented. In order to study the feasibility of this motor, the state equation of the motor is established and the dynamic simulation program of the motor is compiled. Finally, the program is simulated using software and the simulation result is analyzed.

Simulation Analysis on Transmission Function of Parallel Indexing Cam Mechanism Based on Adams

2010 ◽  
Vol 44-47 ◽  
pp. 1258-1262
Author(s):  
Hao Dong Zhao ◽  
Yan Ke Cao ◽  
Pei Quan Guo
Keyword(s):  
Dynamic Simulation ◽  
High Speed ◽  
Simulation Analysis ◽  
Transmission Function ◽  
Kinematics And Dynamics ◽  
Coupled Modeling ◽  
Heavy Load ◽  
Cam Mechanism ◽  
Practical Engineering ◽  
Complex Transmission

Dynamic modeling method for parallel indexing cam mechanism was presented based on rigid-flexible coupled modeling according to the analysis of mechanism feature. Dynamic simulation has been done with the dynamic model established by means of Adams. Dynamic characteristics of different transmission functions commonly used in practical engineering were analyzed in detail from the perspective combined kinematics and dynamics. The application principle of transmission functions was presented based on dynamic simulation and analysis results. That is Modified Cosine transmission function being suitable for applying in low speed or low precision transmission cases, Complex or Gutman’s transmission function being suitable for applying in high speed, heavy load or precision transmission cases. Complex transmission is the best one for design of high-speed indexing cam mechanism.

Testing Analysis on Load Transfer of Tractor-Semitrailer Steering and Braking

2014 ◽  
Vol 540 ◽  
pp. 164-169
Author(s):  
Hong Bo Gao ◽  
Hong Guo Xu ◽  
Hong Fei Liu ◽  
Cheng Zeng
Keyword(s):  
Simulation Model ◽  
Dynamic Simulation ◽  
Load Transfer ◽  
Lateral Load ◽  
Conventional Model ◽  
Longitudinal Load ◽  
Dynamic Simulation Model ◽  
Driving Stability

An algorithm about tractor-semitrailer longitudinal load and lateral load transfer amount was proposed in order to research the driving stability of tractor-semitrailer steering and braking. A dynamic simulation model of tractor-semitrailer including load transfer was established by using S-Function. The results show that the model including load transfer is more actual than conventional model to describe the driving stability of vehicle Further analyzed the effect of factors on load transfer when tractor-semitrailer steering and braking.

Hybrid modeling and dynamic simulation of automated batch plants

2003 ◽  
Vol 42 (3) ◽  
pp. 401-420 ◽  
Author(s):  
A. Sanchez ◽  
L.F. Parra ◽  
R. Baird ◽  
S. Macchietto
Keyword(s):  
Dynamic Simulation ◽  
Hybrid Modeling ◽  
Batch Plants

scholarly journals Low-Speed Control of Heavy-Load Transfer Robot with Long Telescopic Boom Based on Stribeck Friction Model

2012 ◽  
Vol 2012 ◽  
pp. 1-12 ◽  
Author(s):  
Bo You ◽  
Ming Qiao ◽  
Jiazhong Xu ◽  
Dan Liu
Keyword(s):  
Load Transfer ◽  
Dead Zone ◽  
Friction Model ◽  
Fuzzy Pid ◽  
Tracking Accuracy ◽  
Fuzzy Pid Control ◽  
Operation Performance ◽  
Heavy Load ◽  
Loop Control ◽  
Low Speed

The severe low-speed creep phenomenon occurs in the telescopic boom system of a heavy-load transfer robot with a long telescopic boom as a result of nonlinear friction. In order to improve control precision and operation performance at low speeds, we built a three-loop control nonlinear model of an AC servo motor with Stribeck friction disturbance. Traditional proportional-integral-derivative controller (PID) and fuzzy PID controls were, respectively, adopted in the position loop, and the control performance was simulated. The results showed that a system with fuzzy PID control eliminates “flat top” position tracking and “dead zone” speed tracking, which are generated by traditional PID, and thereby decreases the effect of friction on the performance of the servo system. This elimination also improved the tracking accuracy and robustness of the system.

scholarly journals Research on maintenance tools of wire clamps for live working on Ultra High Voltage transmission lines

2021 ◽  
Vol 261 ◽  
pp. 01063
Author(s):  
Zhigang Wang ◽  
Wenjian Mei ◽  
Qi Yang ◽  
Mingming Qiao ◽  
Jianping Chen ◽  
...  
Keyword(s):  
Transmission Line ◽  
High Voltage ◽  
Transmission Lines ◽  
Load Transfer ◽  
Work Efficiency ◽  
Heavy Load ◽  
Rapid Replacement ◽  
High Voltage Transmission ◽  
Wire Suspension ◽  
Auxiliary Device

Aiming at the problem that the suspension clamp is difficult to be quickly replaced due to the heavy load of the suspension clamp when replacing the transmission line wire suspension clamp in the UHV live operation, this paper develops an auxiliary device for realizing the rapid replacement of the conductor suspension clamp. Through the design of fixtures suitable for the installation of UHV wires and connecting plates, the load transfer of the suspension clamp can be quickly realized, and the suspension clamp can be separated and replaced under the condition of no force. The device is flexible and light, and effectively improves the live working personnel work efficiency.

Preparation of Electron Transparent Metal-Matrix Composites

1968 ◽  
Vol 26 ◽  
pp. 334-335 ◽  
Author(s):  
M. R. Pinnel ◽  
A. Lawley
Keyword(s):  
Stainless Steel ◽  
Load Transfer ◽  
Volume Fraction ◽  
Steel Wire ◽  
Initial Step ◽  
Interfacial Region ◽  
Matrix Composites ◽  
Specific Test ◽  
The Matrix ◽  
The One

Numerous phenomenological descriptions of the mechanical behavior of composite materials have been developed. There is now an urgent need to study and interpret deformation behavior, load transfer, and strain distribution, in terms of micromechanisms at the atomic level. One approach is to characterize dislocation substructure resulting from specific test conditions by the various techniques of transmission electron microscopy. The present paper describes a technique for the preparation of electron transparent composites of aluminum-stainless steel, such that examination of the matrix-fiber (wire), or interfacial region is possible. Dislocation substructures are currently under examination following tensile, compressive, and creep loading. The technique complements and extends the one other study in this area by Hancock.The composite examined was hot-pressed (argon atmosphere) 99.99% aluminum reinforced with 15% volume fraction stainless steel wire (0.006″ dia.).Foils were prepared so that the stainless steel wires run longitudinally in the plane of the specimen i.e. the electron beam is perpendicular to the axes of the wires. The initial step involves cutting slices ∼0.040″ in thickness on a diamond slitting wheel.

Deformation at interfaces of Ti-6Al-4V/SiC fiber composites

1992 ◽  
Vol 50 (1) ◽  
pp. 158-159
Author(s):  
Warren J. Moberly ◽  
Daniel B. Miracle ◽  
S. Krishnamurthy
Keyword(s):  
Thermal Stresses ◽  
Load Transfer ◽  
Coefficient Of Thermal Expansion ◽  
Hot Isostatic Pressing ◽  
Matrix Composites ◽  
Ongoing Research ◽  
Aerospace Applications ◽  
Sic Fiber ◽  
The Matrix ◽  
Intermetallic Matrix Composites

Titanium-aluminum alloy metal matrix composites (MMC) and Ti-Al intermetallic matrix composites (IMC), reinforced with continuous SCS6 SiC fibers are leading candidates for high temperature aerospace applications such as the National Aerospace Plane (NASP). The nature of deformation at fiber / matrix interfaces is characterized in this ongoing research. One major concern is the mismatch in coefficient of thermal expansion (CTE) between the Ti-based matrix and the SiC fiber. This can lead to thermal stresses upon cooling down from the temperature incurred during hot isostatic pressing (HIP), which are sufficient to cause yielding in the matrix, and/or lead to fatigue from the thermal cycling that will be incurred during application, A second concern is the load transfer, from fiber to matrix, that is required if/when fiber fracture occurs. In both cases the stresses in the matrix are most severe at the interlace.

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