Research on Optimization Design for Reinforcing Method of Irregular Cross-Section Arch

2012 ◽  
Vol 166-169 ◽  
pp. 1684-1688
Author(s):  
Xu Yong Chen ◽  
Bihai Liao ◽  
Jie Li
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Statistical Method ◽  
Cross Section ◽  
Theoretical Basis ◽  
Optimization Design ◽  
Direct Production ◽  
Arch Bridge ◽  
Physical Unit ◽  
Element Simulation

This article makes finite-element simulation and analysis on a reinforced two-way curved arch bridge by means of ANSYS, a tool of finite element numerical analysis. Through comparison with the testing results after reinforced, it validates feasibility and reasonability to analysze a reinforced two-way curved arch bridge using a physical unit of ANSYS. On basis of this, it brings forward an idea of optimization design and researches the real two bridges for optimization of reinforcement using ANSYS analyzing and mathematically statistical method. Through effects after and prior optimization, it demonstrates necessity for optimization design of reinforcement and attains some significant conclusions which provide theoretical basis to direct production in the future.

Tests before and after Reinforcement of Tujiazui Bridge

2012 ◽  
Vol 204-208 ◽  
pp. 2095-2099
Author(s):  
Xu Yong Chen
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Analysis Tool ◽  
Arch Bridge ◽  
Design Load ◽  
Physical Unit ◽  
Before And After ◽  
Load Tests ◽  
The Common ◽  
Arch Bridges

This paper is aimed to verify the effects of reinforcement by tests before and after reinforcement of a two-way curved arch bridge with a clear span of 70m. Four 100kN and 180kN trucks are used for load tests of the bridge before and after reinforcement, and then the test values are compared with the calculated values. Tests before reinforcement has proved insufficient rigidity in some parts of the bridge, the design load grade is low, and the common fault in two-way curved arch bridges. The finite element numerical analysis tool ANSYS is used for finite element simulative analysis of the bridge, and the comparison of test values with calculated values shows the bridge can meet the existing design load grade after reinforcement. This paper has verified the feasibility and rationality of utilizing the physical unit of ANSYS for analysis of two-way curved arch bridges after reinforcement, and meanwhile, proved that the rigidity and design grade of bridges can be improved by reinforcement.

Finite element simulation of the axial collapse of metallic thin-walled tubes with octagonal cross-section

2003 ◽  
Vol 41 (10) ◽  
pp. 891-900 ◽  
Author(s):  
A.G Mamalis ◽  
D.E Manolakos ◽  
M.B Ioannidis ◽  
P.K Kostazos ◽  
C Dimitriou
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Cross Section ◽  
Element Simulation ◽  
Thin Walled

Finite element simulation and optimization design of biodegradable seedling pot

2015 ◽  
pp. 223-226
Author(s):  
Xing-Dong Liu ◽  
Shu-Jun Li ◽  
Lu-Jia Han ◽  
Quan-Rong Jing ◽  
Dao-Yi Li ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Optimization Design ◽  
Simulation And Optimization ◽  
Element Simulation

Study on Mechanics Properties of Automobile Rear Axle Shell and Optimization Design in Manufacturing System

2012 ◽  
Vol 252 ◽  
pp. 298-301
Author(s):  
Xin Li Bai ◽  
Ying Fang Zhang ◽  
Ya Wei Zhao
Keyword(s):  
Finite Element ◽  
Cross Section ◽  
Optimization Design ◽  
Manufacturing System ◽  
Rear Axle ◽  
Large Strain ◽  
Displacement Curve ◽  
Original Design ◽  
Load Curve ◽  
Element Analysis

The mechanics properties of a certain automobile rear axle shell were studied and a large displacement, large strain elastoplastic finite element analysis was carried out. and the followings were obtained: the load-displacement curve at loading point, elastoplastic strain-load curve at the maximum stress point, elastoplastic stress-load curve in dangerous cross-section, and the yielding load at which the dangerous cross-section overall yield. The results show that elastoplastic finite element simulation results are much closer to the experimental corresponding results. Through optimization design in manufacturing system, the weight of the rear axle shell is greatly reduced as compared with the original design. Optimal design not only saves materials and reduces cost, but also greatly reduces the design time. The calculation results provide the necessary data for automobile rear axle design, strength evaluation and fatigue life estimate.

Study on Multi-Step Spinning Process for Disk-Like Part with Thickened Rim

2018 ◽  
Vol 920 ◽  
pp. 108-113
Author(s):  
Jun Song Jin ◽  
Xue Dong Su ◽  
Xin Yun Wang ◽  
Lei Deng
Keyword(s):  
Finite Element ◽  
Cross Section ◽  
Small Angle ◽  
Flow Line ◽  
Flow Lines ◽  
Element Simulation ◽  
Spinning Process ◽  
Simulation And Experiment ◽  
Formed Part ◽  
Sectional Shape

This paper studies the process of a five-step spinning to thicken the edge of the disc-like part. By using finite element simulation and experiment, the sectional shape and flow-line distribution of the rim were studied. The results showed that the flow lines of the cross-section of the formed part are distributed along the shape of the part. The disc-like part with thickened rim can be well formed by a multi-step spinning process. A large bottom radian of roller groove can lead a folding in the first step and a reduced r can overcome the folding. An over-small angle αin step 2 will lead a pit defect, it can be solved by increasing the angle.

Finite Element Simulation of RC Beam Strengthened with FRP

2012 ◽  
Vol 446-449 ◽  
pp. 3229-3232
Author(s):  
Chao Jiang Fu
Keyword(s):  
Experimental Data ◽  
Finite Element Method ◽  
Finite Element ◽  
Numerical Analysis ◽  
Finite Element Simulation ◽  
Fiber Reinforced Polymer ◽  
Rc Beam ◽  
The Finite Element Method ◽  
Reinforced Polymer ◽  
Element Simulation

The finite element modeling is established for reinforced concrete(RC) beam reinforced with fiber reinforced polymer (FRP) using the serial/parallel mixing theory. The mixture algorithm of serial/parallel rule is studied based on the finite element method. The results obtained from the finite element simulation are compared with the experimental data. The comparisons are made for load-deflection curves at mid-span. The numerical analysis results agree well with the experimental results. Numerical results indicate that the proposed procedure is validity.

scholarly journals The Generalized Untwist Problem of Rotating Blades: A Coupled Aeroelastic Formulation

1994 ◽  
Author(s):  
Gao-Lian Liu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cross Section ◽  
Theoretical Basis ◽  
Variational Principles ◽  
Element Analysis ◽  
Rotating Blades ◽  
Section Shape ◽  
The Finite Element Analysis ◽  
Elastic Distortion

The untwist of rotating blades in turbomachines treated so far in the literatare simply as a pure elasticity problem is generalized and formulated rigorously as a problem of aeroelasticity by variational principles (VPs) and generalized VP (GVP). It takes into account not only the centrifugal force, but also the aeroelastic interaction between blades and the flow as well as the elastic distortion of the cross section shape of blades, assuming the material to be linearly elastic but nonisotropic. Thus, a new rigorous theoretical basis for the finite element analysis of blade untwist in turbomachine design is provided.

Research on Reinforced Concrete Beam Enlarged Cross Section Method Experiment and Finite Element Simulation

2014 ◽  
Vol 638-640 ◽  
pp. 208-213 ◽  
Author(s):  
Yuan Yuan Li ◽  
Bin Guo ◽  
Jiang Liu
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Finite Element Simulation ◽  
Cross Section ◽  
Concrete Beam ◽  
Performance Test ◽  
Bending Strength ◽  
Reinforced Concrete Beam ◽  
Reinforced Concrete Beams ◽  
Element Simulation

Increasing the beam cross section is a kind of traditional and universal strengthening methods of civil structure. The mechanical performance test were studied on the mechanics performance and deformation of four reinforced concrete beams in this study. The results show that increase of the cross section and tensile area at the bottom of the steel could effectively improve the performance of mechanical. The beam crack load, yield load, ultimate load and bending strength are increasing with cross section and mechanical. By simulating the relationship bwteen load and deflection. It is concluded that The finite element simulation of reinforced concrete beam with the reasonable concrete unit and reinforced unit can meet the demand of practical engineering.

Optimization Design Method of the Pre-Manufactured Hole of Flanging

2013 ◽  
Vol 395-396 ◽  
pp. 1206-1211 ◽  
Author(s):  
Yang Li ◽  
Zhong Lei Wang ◽  
Xiao Li ◽  
Gang Cheng
Keyword(s):  
Finite Element ◽  
Optimal Design ◽  
Finite Element Simulation ◽  
Optimization Design ◽  
Design Method ◽  
Line Length ◽  
Theoretical Formula ◽  
Equal Area ◽  
Element Simulation ◽  
Optimal Design Method

For the difficulty of calculating the size of the Pre-Manufactured hole of flanging, the formula was derived by using the theory of equal line length and the theory of equal area. And the formula was verified by finite element simulation. Due to theoretical formula has certain error, the optimal design method based on interpolation was put forward and optimization design the size of the Pre-Manufactured hole of flanging. Engineering example shows that this optimization design method is accuracy and convergence speed, and it can quickly calculate the the size of the Pre-Manufactured hole of flanging.

Numerical Analysis of a Shallow-Buried Portal in Expressway Tunnel with Weak Rockmass

2012 ◽  
Vol 256-259 ◽  
pp. 1369-1372
Author(s):  
Pan Ke Gao ◽  
Yong Li Xie ◽  
Heng Bin Wu
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Finite Element Simulation ◽  
Vertical Direction ◽  
Surrounding Rock ◽  
Horizontal Direction ◽  
Element Simulation ◽  
Key Factor ◽  
Mountain Tunnels ◽  
Unsymmetrical Loading

Aiming at the problems in construction for a shallow-buried and unsymmetrical loading portal in Banzhulin Tunnel in Yu-Xiang expressway, the finite element simulation were carried on to study the behavior for bench excavation method. Main results of numerical analysis as follows:the displacement of surrounding rock of right tunnel(as AR)at the horizontal direction is large and may larger than that of the left tunnel(as AL) at the vertical direction,and the largest deformation is 22.63mm,occuring at the key point DL. Compared with the data of monitoring measurement, the correctness of this simulation was proved.The behavior for deformation and stress of mountain tunnels as Banzhulin is basically mastered,and the displacement of rockmass is the key factor in tunnelling.

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