Secondary Development of Large-Scale Finite Element Software ABAQUS to Achieve the Numerical Simulation of Semi-Active Control

2014 ◽  
Vol 494-495 ◽  
pp. 1008-1011
Author(s):  
Guang Feng ◽  
Song Jian Sun
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Active Control ◽  
Large Scale ◽  
Control Method ◽  
Simulation Analysis ◽  
Numerical Procedure ◽  
Secondary Development ◽  
Control Effect ◽  
Finite Element Software

In the past, the semi-active control study generally is calculated based on the MATLAB numerical procedure, which cant achieve fine simulation. In this paper, to solve this problem, the finite element software ABAQUS is taken to be secondary development, a numerical simulation method of studying semi-active control is proposed. And the seismic response of a steel column is taken for the research. the numerical simulation analysis of the semi-active control is carried out. The results show that the control effect of the control method is significant, and the simulation result is clearly visible.

MECHANICAL SIMULATION AND ELECTROCHEMICAL CORROSION IN A BURIED PIPELINE WITH CORROSION DEFECTS SITUATED IN PERMAFROST REGIONS

2020 ◽  
pp. 2150002
Author(s):  
XIAOLI LI ◽  
LI CHEN ◽  
XIAOYAN LIU ◽  
YU ZHANG ◽  
LIFU CUI
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Simulation Analysis ◽  
Electrochemical Corrosion ◽  
Frost Heave ◽  
Buried Pipeline ◽  
Mechanical Coupling ◽  
Finite Element Software ◽  
Corrosion Defects ◽  
Permafrost Regions

The geological environment along a buried pipeline in permafrost regions is complex, where differential frost heave often occurs. To understand the changes in the stress behavior of pipeline structures caused by corrosion while laying them in permafrost regions, we established a thermo-mechanical coupling model of buried pipeline with corrosion defects by using finite element software. Numerical simulation analysis of buried pipeline was conducted. The effects of the frost heave length, the length of the transition section, the corrosion depth, and the corrosion length on the stress displacement were obtained. These analyses showed that the stresses and displacements of the pipeline with corrosion defects in permafrost regions can be simulated by using the finite element software numerical simulation method. Afterward, the corrosion resistances of pipelines with different corrosion lengths and depths were investigated via an electrochemical testing method. These results can provide some useful insights into the possible mechanical state of buried pipeline with regard to their design and construction, as well as some useful theoretical references for simulating real-time monitoring and safety analysis for their operation in permafrost regions.

The Contact Simulation of CTP Imaging Drum and Plate on ANSYS

2012 ◽  
Vol 151 ◽  
pp. 484-489 ◽  
Author(s):  
Jie Fang Xing ◽  
Jie Zhang ◽  
Lu Jun He
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Finite Element Model ◽  
Optimization Design ◽  
Simulation Analysis ◽  
Element Model ◽  
Basic Knowledge ◽  
Dynamic Design ◽  
Design And Optimization ◽  
Finite Element Software

Introduce some basic knowledge, methods and theory of using the finite element software ANSYS to carry out contact analysis, and then establish the contact simulation analysis finite element model for CTP imaging drum and plate by using the software ANSYS. A numerical simulation analysis on the imaging drum and the plate indicates that the analysis results are consistent with the experimental results, so as to lay the foundation for the reliability and stability of dynamic design and optimization design of CTP imaging drum.

Numerical Simulation and Experimental Study of Static Driven Short Piles in the Dualistic Structure Stratum

2011 ◽  
Vol 55-57 ◽  
pp. 193-196
Author(s):  
Xin Gui Zhang ◽  
Xiang Gang Kong ◽  
Zhen Song
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Pile Foundation ◽  
Simulation Analysis ◽  
Measured Data ◽  
Vertical Load ◽  
Finite Element Software ◽  
Practical Engineering ◽  
Load Action ◽  
Dualistic Structure

In this paper, based on measured data of practical engineering, the characters of single short pile under the static vertical load action in the normal stratum combination model of dualistic structure has been simulated by using ABAQUS finite element software. Then simulated result and measured one has been compared and analyzed carefully. The analysis result indicated the applicability and reliability of ABAQUS finite element software in the simulation analysis of short pile. All these can provide some theoretical reference for design of short pile foundation.

Typical Brackets Dimensional Numerical Simulation of the Wooden Structure

2014 ◽  
Vol 1008-1009 ◽  
pp. 1250-1253
Author(s):  
Wei Chao Ao ◽  
Qing Fang Niu ◽  
Guan Feng Qiao ◽  
Tie Ying Li
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Dynamic Response ◽  
Failure Modes ◽  
Simulation Analysis ◽  
Dual Function ◽  
Finite Element Software ◽  
The Ancient Chinese ◽  
Mechanism Of Failure ◽  
Architectural Ornament

Brackets is the ancient Chinese wooden building unique ways and one of the main features of the structure. Its dual function of both structural and architectural: An important component of both the structure itself, because of its flexible features tenon, the dynamic response of the structure can absorb greater energy, play a good role in the earthquake; But it is also a special architectural ornament, can play the effect of beautifying buildings. Therefore, this paper based on the finite element software ABAQUS brackets by the force of the mechanism of failure modes and numerical simulation analysis for the brackets and the whole structure of the wood to provide a scientific assessment and reinforcement.

Based on the Technology of Shaped Charge Numerical Simulation Research of the Ice Model's Combination Blasting

2013 ◽  
Vol 753-755 ◽  
pp. 1002-1006 ◽  
Author(s):  
Wen Yuan Meng ◽  
Jun Qiang Hu ◽  
Xin Liu
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Large Scale ◽  
Peak Pressure ◽  
Yellow River ◽  
Underwater Explosion ◽  
Shaped Charge ◽  
Simulation Research ◽  
Finite Element Software ◽  
Set Up

Combination of ice blasting model is set up with the program of blasting with technology of shaped charge, numerical calculation is carried out, and the shockwave peak pressure in ice medium is obtained based on the large-scale finite element software ANSYS/LS-DYNA . This paper analyzes the stress distribution of ice in the combination of underwater explosion loads, and studies the process of the underwater explosion. The article aims to promote the application and research of underwater explosion in Yellow River and Hei Long Jiang River ice blasting, etc.

Semi-active vibration control of large-scale flexible structure based on fuzzy adaptive SSDV technique

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1199-1206
Author(s):  
Xiang Wang ◽  
Xiaoyu Wang ◽  
Hongyou Chai ◽  
Feng Gao ◽  
Haowei Wang ◽  
...  
Keyword(s):  
Active Control ◽  
Large Scale ◽  
Control Method ◽  
Damping Ratio ◽  
Flexible Structures ◽  
Voltage Source ◽  
Control Effect ◽  
Initial Displacement ◽  
Control Precision ◽  
Fuzzy Adaptive

In order to suppress the vibration of large-scale flexible structures which are applied on the spacecraft, a semi-active control method based on fuzzy adaptive SSDV (synchronized switch damping on voltage) technique is proposed. The value of voltage source at the switching moment is adjusted adaptively by using fuzzy logic, in order to improve the stability and control precision of the semi-active control system. The feasibility of this method is verified by two kinds of experiments with typical disturbance conditions. By comparing different adaptive displacement-voltage curves, the fuzzy adaptive method can achieve higher control precision. For the initial displacement disturbance of 10 mm, the fuzzy adaptive SSDV method can increase the system damping ratio from 0.6% to 5.1%. The control effect decreases with the increase of initial displacement. For the disturbance caused by the mechanism at the tip position, the method can effectively shorten the vibration damping time and reduce the displacement from 0.3 mm to 0.04 mm.

Numerical Simulation of Rubber Bladder Hydroforming Process for Shrink Flanging Parts with Large Curvature

2012 ◽  
Vol 430-432 ◽  
pp. 1286-1289
Author(s):  
Ming He Chen ◽  
Fu Dong Wang ◽  
Jie Xiong
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Simulation Analysis ◽  
Hydraulic Press ◽  
Blank Holder ◽  
Finite Element Software ◽  
Hydroforming Process ◽  
Rubber Forming ◽  
Main Defect ◽  
Dip Angle

The main defect of shrink flanging wing rib is wrinkling in rubber bladder hydroforming. In the aeronautical field, the side blank holder is usually used to avoid wrinkling. In order to obtain appropriate parameters of side blank holder, it be carried out that the simulation analysis for the process of the high hydraulic press rubber forming processes of high shrink flanging with side blank holder by the ABAQUS finite element software. Besides, the corresponding experiments verified also be implemented. The research results show that the sheet metal tends to wrinkle along with decrease of the blank lap width and increase of these parameters such as the distance between side blank holder and die, the dip angle and fillet radius of the side blank holder.

Numerical Simulation Analysis on Vertical Displacement of Step Excavation in Foundation Pit Project

2014 ◽  
Vol 651-653 ◽  
pp. 1201-1204
Author(s):  
Fang Guo
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Simulation Analysis ◽  
Vertical Displacement ◽  
Construction Process ◽  
Foundation Pit ◽  
Maximum Settlement ◽  
Displacement Distribution ◽  
Finite Element Software ◽  
Pit Depth

In order to study the vertical displacement distribution of foundation pit in the process of step-by-step excavation, combined with a foundation pit project, numerical simulation analysis with finite element software was carried in the research. The results show that: in the process of excavation, the maximum settlement of soil outside the pit is 41.4 mm, which is 2.95 ‰ of pit excavation depth and conforms to the recommended value in specifications. The maximum vertical displacement of soil at the bottom of foundation pit is in the center of pit. Its value is gradually increasing with the excavation, and the maximum is 60.1 mm, which is 4.32 ‰ of foundation pit depth,also,it conforms to the specifications proposed value. The proposed scheme can satisfy the vertical displacement of foundation pit excavation in the construction process.

Numerical Simulation Analysis of Beam-Reduction and Rib-Addition Strengthening Method of Hollow Slab Bridges

2012 ◽  
Vol 546-547 ◽  
pp. 57-65
Author(s):  
Guang Ning Pu ◽  
Li Jun Li ◽  
Yu Zhao
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Stress State ◽  
Simulation Analysis ◽  
Obvious Effect ◽  
Finite Element Software ◽  
Beam Method ◽  
Before And After ◽  
The Difference ◽  
Strengthening Method

For the purpose of the study of the mechanical mechanism of beam-reduction and rib-addition strengthening method as well as the difference between hinged beam method and rigidly connected beam method, finite element models are established for hollow slab bridge before and after strengthening respectively with the finite element software Ansys. The stress distributions on hollow slab bridge before and after strengthening are compared through numerical simulation analysis. The improvement effects of beam-reduction and rib-addition method on the transverse connection and stress state of hollow slab bridge are analyzed at the same time. It is proved that this strengthening method is of obvious effect and the bearing capacity of the existing bridge can be greatly enhanced. Meanwhile, the result of numerical simulation analysis shows that the beam-reduction and rib-addition hinged beam method and rigidly connected beam method have the similar effects. Both of them result in much improvement of transverse distribution and enhancement of transverse connection. But the rigidly connected beam method has a better overall rigidity and a tighter transverse connection. Its improvement effect on the stress state of the old beam slab is superior to that of the hinged beam method.

Dynamic Response Analysis of the Reinforced Concrete Column under the Effect of Explosive Impact Load

2013 ◽  
Vol 681 ◽  
pp. 99-104 ◽  
Author(s):  
Yu Feng Chen ◽  
Guang Xiang Yi
Keyword(s):  
Finite Element ◽  
Large Scale ◽  
Simulation Analysis ◽  
Impact Load ◽  
Material Model ◽  
Element Model ◽  
Response Analysis ◽  
Reinforced Concrete Column ◽  
Rc Column ◽  
Finite Element Software

This paper does the data simulation analysis by using the large-scale finite element nonlinear ANSYS/LS-DYNA software. It chooses the MAT111(MAT-JOHNSON-HOLMQUIST -CONCRETE）concrete materials and the MAT3 (MAT-PLASTIC-KINEMATIC) reinforcement material model in ANSYS/LS-DYNA finite element software, builds the separating RC column finite element model, dynamically simulates the hurting process of RC column under the effect of explosive impact load, and mainly does research into the damage degree of RC column under different effects of explosive load of different peak pressures.

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