Force Model and its Simulation Analysis of Wheel-legged Lunar Rover

2010 ◽  
Author(s):  
Yongming Wang ◽  
Xiaoliu Yu ◽  
Tonghua Fan ◽  
Xiaolin Du
Keyword(s):  
Simulation Analysis ◽  
Force Model ◽  
Lunar Rover

Analysis to Milling Force Base on AdvantEdge Finite Element Analysis

2014 ◽  
Vol 981 ◽  
pp. 895-898
Author(s):  
Fu Cai Zhang ◽  
Qing Wang ◽  
Ru Yang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Simulation Analysis ◽  
Cutting Parameters ◽  
Milling Process ◽  
Force Model ◽  
Cnc Milling ◽  
Milling Force ◽  
Element Analysis ◽  
Milling Force Model

Aiming at NC milling processing simulation problem, a ball-end cutter milling force model is established, the numerical simulation analysis of aluminum alloy AL2024 milling process is conducted by using the finite element analysis software AdvantEdge finite element analysis. Focus on the Milling force simulation, the size of the milling force is obtained by simulating calculation. Using the same cutting parameters for milling experiment, the results show that simulation analysis of the cutting force values ​​are in good agreement with the experimental results，the milling force model prior established is correct. The research laid a foundation for the perfect CNC milling simulation system.

Modelling the tyre forces for a simulation analysis of a vehicle accident reconstruction

2016 ◽  
Vol 231 (1) ◽  
pp. 16-26 ◽  
Author(s):  
Inhwan Han
Keyword(s):  
Vehicle Dynamics ◽  
Dynamic Behaviour ◽  
Simulation Analysis ◽  
Physical Parameters ◽  
Force Model ◽  
Accident Reconstruction ◽  
Test Results ◽  
Vehicle Accident ◽  
Vehicle Collision ◽  
Core Part

This paper proposes a modified bilinear tyre force model for simulations of the vehicle dynamics, which is the core part in reconstruction analysis of vehicle collision accidents. The physical parameters involved were estimated using a statistical method based on experimental test results of the tyre forces. With an appropriate setting of the input data related to a tyre blowout, a simulation analysis of the dynamics of the vehicle which had suffered the tyre blowout was performed. The developed simulation analysis results for the dynamic behaviour of a vehicle with normal tyres with total locks or with a one-wheel lock and for vehicles with tyre blowouts when driving straight or turning corresponded well to the results of other commercial programs. The reliability of these results was proved by comparing them with the corresponding data for many vehicles involved in blowout-related accidents and in particular the path travelled by those vehicles as recorded on black-box footages.

Force Model and Simulation Analysis about Two-Ring Speed Reducer

2012 ◽  
Vol 503-504 ◽  
pp. 900-904
Author(s):  
Ling Fang Li ◽  
Zhe Ming He ◽  
You Xin Luo
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Simulation Analysis ◽  
Planetary Gear ◽  
Force Model ◽  
The Finite Element Method ◽  
Model And Simulation ◽  
Speed Reducer ◽  
Symmetric Points ◽  
Internal Gear

After expounding the characteristic and the weakness of three-ring speed reducer, this paper pointed out the principle of two-ring speed reducer. In two-ring speed reducer, the planetary gear with inner teeth is supported by three shafts, and rotary centers of three eccentric shafts are made to form an equilateral triangle in a plane. At any time, meshing points of two internal gear pairs in two-ring speed reducer are always located at two symmetric points of the output rotation centers, which makes the manufacturing and assembly of two-ring speed reducer are more simple and convenient than three-ring one. Then, the force model of two-ring speed reducer was established, and the simulation analysis was done in Matlab. The result in the simulation coincides with in the finite element method, which testifies the formula deduced in this paper is correct.

Analysis on Milling Force Based on AdvantEdge FEM

2013 ◽  
Vol 300-301 ◽  
pp. 253-260 ◽  
Author(s):  
Xiu Lin Sui ◽  
Ru Yang ◽  
Qian Wang ◽  
Xin Ling Zhao
Keyword(s):  
Simulation Analysis ◽  
Cutting Parameters ◽  
Milling Process ◽  
Force Model ◽  
Cnc Milling ◽  
Milling Force ◽  
Element Analysis ◽  
Nc Milling ◽  
Simulation Problem ◽  
Milling Force Model

Aiming at NC milling processing simulation problem, a ball-end cutter milling force model is established, the numerical simulation analysis of aluminum alloy AL2024 milling process is conducted by using the finite element analysis software AdvantEdge FEM. Focus on the Milling force simulation, the size of the milling force is obtained by simulating calculation. Using the same cutting parameters for milling experiment, the results show that simulation analysis of the cutting force values are in good agreement with the experimental results，the milling force model prior established is correct. The research laid a foundation for the perfect CNC milling simulation system.

Semiactive Wind Response Control of 76-Story Benchmark Building with Smart Piezoelectric Friction Dampers

2011 ◽  
Vol 250-253 ◽  
pp. 2196-2201 ◽  
Author(s):  
Ping Dong ◽  
Jian Fan
Keyword(s):  
Control System ◽  
Active Control ◽  
Simulation Analysis ◽  
Force Model ◽  
Friction Damper ◽  
Damping Force ◽  
Friction Dampers ◽  
Benchmark Model ◽  
Active Control System ◽  
Wind Induced Vibration

A smart piezoelectric friction damper (SPFD) is presented based on improved Pall friction dampers and its damping force model is analyzed. The wind-induced vibration control of Benchmark model using semi-active control strategies based on the classical LQR is studied. The results of simulation analysis show that the semi-active control effects of the standard wind-control model with SPFD is evident. Compared to uncontrolled structures, the wind-induced vibration responses of the controlled structures are effectively reduced. In addition, parameter optimization of the semi-active control system based on the limit Hrovat optimal control algorithm is carried out. The analysis shows that the robustness of the semi-active control system to the stiffness uncertainty of Benchmark Model is very good, but the robustness to the damping uncertainty is not so good.

Computer simulation study about the dependence of amorphous silicon photonic waveguides efficiency on the material quality

2020 ◽  
Vol 90 (3) ◽  
pp. 30502
Author(s):  
Alessandro Fantoni ◽  
João Costa ◽  
Paulo Lourenço ◽  
Manuela Vieira
Keyword(s):  
Amorphous Silicon ◽  
High Throughput Screening ◽  
Simulation Analysis ◽  
Low Cost ◽  
Deposition Process ◽  
Large Area ◽  
Sidewall Roughness ◽  
Sensing Applications ◽  
Fabrication Defects ◽  
The Impact

Amorphous silicon PECVD photonic integrated devices are promising candidates for low cost sensing applications. This manuscript reports a simulation analysis about the impact on the overall efficiency caused by the lithography imperfections in the deposition process. The tolerance to the fabrication defects of a photonic sensor based on surface plasmonic resonance is analysed. The simulations are performed with FDTD and BPM algorithms. The device is a plasmonic interferometer composed by an a-Si:H waveguide covered by a thin gold layer. The sensing analysis is performed by equally splitting the input light into two arms, allowing the sensor to be calibrated by its reference arm. Two different 1 × 2 power splitter configurations are presented: a directional coupler and a multimode interference splitter. The waveguide sidewall roughness is considered as the major negative effect caused by deposition imperfections. The simulation results show that plasmonic effects can be excited in the interferometric waveguide structure, allowing a sensing device with enough sensitivity to support the functioning of a bio sensor for high throughput screening. In addition, the good tolerance to the waveguide wall roughness, points out the PECVD deposition technique as reliable method for the overall sensor system to be produced in a low-cost system. The large area deposition of photonics structures, allowed by the PECVD method, can be explored to design a multiplexed system for analysis of multiple biomarkers to further increase the tolerance to fabrication defects.

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