Analysis of Static Bending Rigidity with Car Body Lightweight Design for Certain Model of Electric Vehicle

Taking a certain urban model of electric vehicle as example, DC04 steel plate has replaced with high-strength steel plate BH340 for some parts of the car body on the purpose of reducing the car weight; at the same time, reduced the thickness of steel plate at the replacing spots, and then set the finite element model for the car body to compare its bending rigidities before and after replacement. On the premise of satisfying car body’s bending rigidity, it could make car body to reduce a weight of 23.2KG to satisfy the requirement for lightweight design.

Use of DNVGL-RP-C203 for Determining the Fatigue Capacity of Connectors

10.1115/omae2021-62880 ◽

2021 ◽

Author(s):

Anthony Muff ◽

Anders Wormsen ◽

Torfinn Hørte ◽

Arne Fjeldstad ◽

Per Osen ◽

...

Keyword(s):

Finite Element ◽

Fatigue Testing ◽

Experimental Testing ◽

High Strength ◽

Element Model ◽

Fatigue Analysis ◽

Full Scale ◽

Abstract Guidance for determining a S-N based fatigue capacity (safe life design) for preloaded connectors is included in Section 5.4 of the 2019 edition of DNVGL-RP-C203 (C203-2019). This section includes guidance on the finite element model representation, finite element based fatigue analysis and determination of the connector design fatigue capacity by use of one of the following methods: Method 1 by FEA based fatigue analysis, Method 2 by FEA based fatigue analysis and experimental testing and Method 3 by full-scale connector fatigue testing. The FEA based fatigue analysis makes use of Appendix D.2 in C203-2019 (“S-N curves for high strength steel applications for subsea”). Practical use of Section 5.4 is illustrated with a case study of a fatigue tested wellhead profile connector segment test. Further developments of Section 5.4 of C203-2019 are proposed. This included acceptance criteria for use of a segment test to validate the FEA based fatigue analysis of a full-scale preloaded connector.

Electric Bus Body Lightweight Design Based on Multiple Constrains

10.4028/www.scientific.net/amr.538-541.3137 ◽

2012 ◽

Vol 538-541 ◽

pp. 3137-3144 ◽

Cited By ~ 1

Author(s):

Wen Wei Wang ◽

Cheng Jun Zhou ◽

Cheng Lin ◽

Jiao Yang Chen

Keyword(s):

Finite Element ◽

Lightweight Design ◽

Element Model ◽

The Body ◽

Body Frame ◽

Electric Bus ◽

Free Model ◽

Bus Body ◽

The Finite Element Model ◽

Torsion Condition

The finite-element model of pure electric bus has been built and the free model analysis, displacement and stress analysis under bending condition and torsion condition have been conducted. Optimally design the pure electric bus frame based on multiple constrains. Reduce the body frame quality by 4.3% and meanwhile meet the modal and stress requirements.

Numerical Investigation of Stress Block for High Strength Concrete Columns

Civil Engineering Journal ◽

10.28991/cej-2020-03091522 ◽

2020 ◽

Vol 6 (5) ◽

pp. 974-996

Author(s):

Nizar Assi ◽

Husain Al-Gahtani ◽

Mohammed A. Al-Osta

Keyword(s):

Finite Element ◽

Intensity Factor ◽

Finite Element Model ◽

High Strength Concrete ◽

Analytical Approach ◽

High Strength ◽

Element Model ◽

Strength Concrete ◽

Stress Block ◽

This paper is intended to investigate the stress block for high strength concrete (HSC) using the finite element model (FEM) and analytical approach. New stress block parameters were proposed for HSC including the stress intensity factor (α1) and the depth factor (β1) based on basic equilibrium equations. A (3D) finite element modeling was developed for the columns made of HSC using the comprehensive code ABAQUS. The proposed stress parameters were validated against the experimental data found in the literature and FEM. Thereafter, the proposed stress block for HSC was used to generate interaction diagrams of rectangular and circular columns subjected to compression and uniaxial bending. The effects of the stress block parameters of HSC on the interaction diagrams were demonstrated. The results showed that a good agreement is obtained between the failure loads using the finite element model and the analytical approach using the proposed parameters, as well as the achievement of a close agreement with experimental observation. It is concluded that the use of proposed parameters resulted in a more conservative estimation of the failure load of columns. The effect of the stress depth factor is considered to be minor compared with the effect of the intensity factor.

Experimental and Numerical Study on the Protective Behavior of Weldox 900 E Steel Plates Impacted by Blunt-Nosed Projectiles

Metals ◽

10.3390/met12010141 ◽

2022 ◽

Vol 12 (1) ◽

pp. 141

Author(s):

Yahui Shi ◽

Ang Hu ◽

Taisheng Du ◽

Xinke Xiao ◽

Bin Jia

Keyword(s):

Numerical Simulation ◽

Finite Element ◽

Fracture Criterion ◽

Numerical Study ◽

Mesh Size ◽

High Strength ◽

Element Model ◽

Steel Plates ◽

Protective Behavior ◽

To demonstrate the importance of incorporating Lode angle into fracture criterion in predicting the penetration resistance of high-strength steel plates, ballistic tests of blunt-nosed projectiles with a diameter of 5.95 mm impacted 4 mm thick Weldox 900 E steel plates were conducted. Impacting velocity range was 136.63~381.42 m/s. The fracture behavior and the ballistic limit velocities (BLVs) were obtained by fitting the initial-residual velocities of the projectiles. Subsequently, axisymmetric finite element (FE) models parallel to the tests were built by using Abaqus/Explicit software, and the Lode-independent Johnson–Cook (JC) and the Lode-dependent ASCE fracture criterion were incorporated into the finite element model for numerical simulation. Meanwhile, to verify the sensitivity of the mesh size in the numerical simulation, different mesh sizes were used in the shear plug area of the target. It can be found that Weldox 900 E steel has obvious mesh size sensitivity by comparing the experimental results and numerical simulation, and the JC fracture criterion and the ASCE fracture criterion predicted similar BLV for the same mesh size.

Flex Gradient Optimization on Stiffened Steel Plate of Profiled Plate Rubber Support

10.4028/www.scientific.net/amr.97-101.2806 ◽

2010 ◽

Vol 97-101 ◽

pp. 2806-2809

Author(s):

Duan Cai Yuan ◽

Jin Xi Duan ◽

Chu Shun Zhou ◽

Shang Yang Meng

Keyword(s):

Finite Element ◽

Steel Plate ◽

Element Model ◽

Nonlinear Finite Element ◽

Transverse Displacement ◽

Nonlinear Finite Element Method ◽

Gradient Optimization ◽

Railroad Bridge ◽

Stiffened Steel ◽

The plate rubber support is widely used in railroad bridge. To analyse its capability of transverse displacement resistance and increase its life-span, the finite element model of profiled plate rubber support is established by nonlinear finite element method. The influence of flex gradient of stiffened steel plate to the function of the plate rubber support is analyzed and the optimal gradient is obtained.The method and conclusions are available for designing of plate rubber support.

Application of Pile Underpinning for Strengthening Design of Longgan Bridge

10.4028/www.scientific.net/amr.163-167.3465 ◽

2010 ◽

Vol 163-167 ◽

pp. 3465-3473

Author(s):

Yi Ping Tan ◽

Jian Li ◽

Jin Hua Zou ◽

Hai Bo Jiang

Keyword(s):

Finite Element ◽

Finite Element Model ◽

Bearing Capacity ◽

Flow Separation ◽

Element Model ◽

Bridge Pier ◽

Box Girders ◽

Scour Holes ◽

Before And After ◽

Local scouring around the bridge pier occurs because of flow separation and the development of several vortexes around the pier. Such scour holes can cause a weakness in the bridge which may see cracks occurring on the box girders, especially during flooding. This paper presents a design scheme in which a pile underpinning technique has been adopted for such cases during research into defects in bridges. Furthermore, the finite element model has been established to evaluate the bearing capacity of the bridge before and after adopting this new measure. A large quantity of calculation data indicate that the application of the proposed method performs appropriately and plays an important role in raising the bearing capacity of bridge. The specific program bringing this into effect correctly in a renovation project is illustrated.

Lightweight Design for Frame Structure of a Mini-Battery Electric Vehicle

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.778.33 ◽

2015 ◽

Vol 778 ◽

pp. 33-36

Author(s):

Ting Ting Wang ◽

Hai Zhu Zhang

Keyword(s):

Finite Element ◽

Finite Element Model ◽

Electric Vehicle ◽

Static Analysis ◽

Lightweight Design ◽

Element Model ◽

Frame Structure ◽

Battery Electric Vehicle ◽

Stress Distributions ◽

Improvement Program

A finite element model for the frame structure of mini-battery electric vehicle (mini-BEV) is established. The stress distributions of frame structure are calculated under three typical conditions. On this basis, the lightweight design of frame structure is presented, and then the new modified frame is carried out to take static analysis to validate the improvement program results show that the improved scheme is desirable.

Methods for calculating the reinforcement of concrete slabs with carbon composite materials based on the finite element model

MATEC Web of Conferences ◽

10.1051/matecconf/201825104061 ◽

2018 ◽

Vol 251 ◽

pp. 04061 ◽

Cited By ~ 6

Author(s):

Valeriy Telichenko ◽

Vladimir Rimshin ◽

Ekaterina Kuzina

Keyword(s):

Finite Element ◽

Composite Materials ◽

Finite Element Model ◽

Large Scale ◽

Element Model ◽

Carbon Composite ◽

Before And After ◽

Carbon Composite Materials ◽

Design Values ◽

In this article, a method is proposed for calculating the reinforcement of concrete ceiling slabs with carbon composite materials based on the finite element model in the computer program SCAD Office PC. This method allows the most complete and accurate representation to be obtained of the structure stress-strain state before and after reinforcement with composite materials. Therefore, it allows high-quality designing and reduces the cost conducting calculations and tests on a large scale. The design values are taken from the initial data, and include conclusions based on the results of analysis of the technical state of the structures and drawings from the calculation section of the CS (reinforced concrete structures).

Numerical Study of Dynamic Response of Steel Deck Pavement on the Bascule Bridge

10.4028/www.scientific.net/amr.148-149.1246 ◽

2010 ◽

Vol 148-149 ◽

pp. 1246-1249

Author(s):

Yun Liu ◽

Xin Yu ◽

Zhen Dong Qian

Keyword(s):

Finite Element ◽

Mechanical Response ◽

Steel Plate ◽

Numerical Study ◽

Element Model ◽

Shear Stresses ◽

Asphalt Paving ◽

Steel Deck ◽

The Finite Element Model ◽

Opening Process

The bascule bridge is one of the most suitable bridge types for ports and rivers in cities. In order to discuss the mechanical behavior of the pavements in the opening process, the finite element model of the pavement system on the Haihe Bridge being built in Tianjin China was built, and the mechanical response in the opening process was calculated. The research results show that the asphalt paving with the thickness of 30mm~40mm is fit for the bascule bridge. The max shear stresses of pavement between pavement and steel plate in the opening process rise with the increase of Young’s modulus, and the high temperature during the construction and conservation after construction should be provided.

Study on Fatigue Property of Cracked Steel Plate Strengthened by CFRP

MATEC Web of Conferences ◽

10.1051/matecconf/201927502014 ◽

2019 ◽

Vol 275 ◽

pp. 02014

Author(s):

Xi-Zhi Wu ◽

Wei-Kang Yang ◽

Xian-Guo Zang

Keyword(s):

Experimental Data ◽

Finite Element ◽

Fatigue Life ◽

Finite Element Model ◽

Cohesive Zone Model ◽

Steel Plate ◽

Fatigue Property ◽

Element Model ◽

Zone Model ◽

This paper presents fatigue property of CFRP-strengthened cracked steel plate. Firstly, the finite element model of CFRP-strengthened cracked steel plate is established by using the cohesive zone model. With the finite element model, stress intensity factor of the crack-tipis calculated. Then, it gives the fatigue tests of cracked steel plate. According to the experimental data, the material constants C and n value sare obtained. The prediction fatigue life is calculated by the finite element model and Paris function and verified by the experimental data. The results show that the prediction fatigue life, calculated by the finite element model and the Paris formula, is consistent with the experimental fatigue life, which verifies the accuracy of our prediction model with finite element model and the Paris function.