Topology Optimization Design of Gearbox Housing in Electric Bus

2014 ◽  
Vol 574 ◽  
pp. 173-178
Author(s):  
Ling Ling ◽  
Yong Huang
Keyword(s):  
Topology Optimization ◽  
Optimization Design ◽  
Variable Density ◽  
Element Analysis ◽  
Design Constraint ◽  
Electric Bus ◽  
Final Design ◽  
Virtual Prototyping Technology ◽  
Design Requirements ◽  
Strength And Stiffness

The virtual prototyping technology in corporation with a finite element analysis was first used to analyze the strength and stiffness of gearbox casing in an electric bus. On the basis of this analysis, the topology optimization technology (TOT) based on the variable density method was introduced into the design of gearbox casing which takes the minimized total flexibility of gearbox as the objective function, the density of each cell as the design variable and the volume as the design constraint. Then, according to the results of topology optimization and the requirements of manufacturing process, the structure of gearbox casing was designed in detail. Finally, the stress analysis of the housing model of the final design was carried out. The results show that the optimized housing not only meets the design requirements of stiffness and strength, but also reduces its quality, which can make the performance of gearbox achieve optimal.

Topology Optimization for the Base of Parallel Loading Device

2013 ◽  
Vol 579-580 ◽  
pp. 345-348 ◽  
Author(s):  
Huan Gong Wang ◽  
Li Ping Wang ◽  
Ning Min Kang ◽  
Run Cheng Li
Keyword(s):  
Topology Optimization ◽  
Optimization Design ◽  
Environmental Constraints ◽  
Structural Stiffness ◽  
Element Analysis ◽  
Loading Device ◽  
Final Design ◽  
Design Requirements ◽  
Manual Handling ◽  
Design Weight

The base of Parallel loading device withstand the pressure of hundreds of tons, Limited by the conditions of use, All components of the device must be manual handling, so Its weight becomes very sensitive. The initial design weight of base are about 170 kg, By handling environmental constraints, four men lift is also very convenient, Therefore it's urgent to reduce weight. In this paper, a powerful modeling capabilities of UG combined ANSYS topology optimization module on the base for a topology optimization, We refer to the shape of topology optimization design of the final design of the structure. Through finite element analysis, the structural stiffness and strength to meet the design requirements, And weight decreased from about 170 kg to 120 kg, reduced by nearly 30%.

Topology Optimization of the Base of Loading Device

2014 ◽  
Vol 494-495 ◽  
pp. 404-407
Author(s):  
Hua Ping Mei ◽  
Hao Yue Tian
Keyword(s):  
Topology Optimization ◽  
Optimization Design ◽  
Environmental Constraints ◽  
Structural Stiffness ◽  
Element Analysis ◽  
Loading Device ◽  
Final Design ◽  
Design Requirements ◽  
Manual Handling ◽  
Design Weight

The base of Parallel loading device withstand the pressure of hundreds of tons, Limited by the conditions of use, All components of the device must be manual handling, so Its weight becomes very sensitive. The initial design weight of base are about 170 kg, By handling environmental constraints, four men lift is also very convenient, Therefore it's urgent to reduce weight. In this paper, a powerful modeling capabilities of UG combined ANSYS topology optimization module on the base for a topology optimization, We refer to the shape of topology optimization design of the final design of the structure. Through finite element analysis, the structural stiffness and strength to meet the design requirements, And weight decreased from about 170 kg to 120 kg, reduced by nearly 30%.

The Performance Analysis of Humanoid Massage Robot Arm Based on SolidWorks

2013 ◽  
Vol 753-755 ◽  
pp. 1011-1015
Author(s):  
Zai Xiang Pang ◽  
Lin An Gong ◽  
Da Wei Jiang ◽  
Tie Jun Liu
Keyword(s):  
Optimization Design ◽  
Parametric Model ◽  
Robot Arm ◽  
Analysis Software ◽  
Element Analysis ◽  
Positioning Accuracy ◽  
Design Requirements ◽  
Main Factors ◽  
Stiffness Characteristics ◽  
Strength And Stiffness

The strength and stiffness of humanoid massage robot arm are the main factors that they affect the dynamic characteristics and positioning accuracy under the action of the load. In order to analysis the strength and stiffness characteristics of humanoid massage robot arm. With SolidWorks we establish parametric model and by finite element analysis software ANSYS analyses the strength and stiffness of key parts and components. Emulational results show that the stiffness and strength of humanoid massage robot arm that we design and invent meet the design requirements, lay a foundation for further optimization design.

Application of Topological Optimization on Aluminum Alloy Automobile Wheel Designing

2012 ◽  
Vol 562-564 ◽  
pp. 705-708
Author(s):  
Zhi Jun Zhang ◽  
Hong Lei Jia ◽  
Ji Yu Sun ◽  
Ming Ming Wang
Keyword(s):  
Topology Optimization ◽  
Lightweight Design ◽  
Optimization Method ◽  
Variable Density ◽  
Topological Optimization ◽  
Optimal Topology ◽  
Element Analysis ◽  
Material Interpolation ◽  
Strength And Stiffness

Topology optimization method based on variable density and the minimum compliance objective function was used on designing the wheel spokes. SIMP material interpolation model was established to compensate these deficiencies of variable density method. Considering manufacturing process and stress distribution, five bolt wheels was chose to topology optimization. The percentage of material removal of the optimal topology 40% was reasonable. Finite element analysis was used to test the strength and stiffness of the structure of the wheel, the result meets the requirements after wheel topology optimization, and reduces the quality of wheels to 7.76kg, achieve the goals of lightweight design.

Finite Element Analysis and the Topology Optimization of a Bracket-Cable

2010 ◽  
Vol 44-47 ◽  
pp. 1325-1329 ◽  
Author(s):  
Xun Ma ◽  
Ji Wei Zhang
Keyword(s):  
Finite Element ◽  
Topology Optimization ◽  
Strain Energy ◽  
Optimization Design ◽  
Commercial Vehicle ◽  
The Finite Element Method ◽  
Element Analysis ◽  
Strength And Stiffness ◽  
Designing Method ◽  
Heavy Commercial Vehicle

The bracket-cable is one of the important structures of transmission control system of Heavy Commercial Vehicle. By using the compliance (strain energy) as an object function and the volume as constrain, the topology optimization design for the bracket-cable is performed with Hyperworks10.0, which is made considering the characteristics of structure, constraints and forces etc. To meet the structural strength and stiffness requirements, 34.7% of the mass are decreased after the process. The generalization designing method of the structure of the bracket is also provided. The Structure analysis and the topology optimization based on the finite element method may help us get the best variation of the design during the developing phase. It has also significance to shorten the design process and to improve the product quality.

scholarly journals Structural Analysis And Topology Optimization Design For Bandwidth Extension of Magnetoelectric Seismometer

2021 ◽  
Author(s):  
Zhenjing Yao ◽  
Jingyi Zhang ◽  
Zhitao Gao ◽  
Yaran Liu ◽  
Mingyang Li
Keyword(s):  
Topology Optimization ◽  
Natural Frequency ◽  
Optimization Design ◽  
Variable Density ◽  
Optimal Topology ◽  
Leaf Spring ◽  
Frequency Bandwidth ◽  
Effective Frequency ◽  
Element Analysis ◽  
Lower Natural Frequency

Abstract Magnetoelectric seismometers can measure earthquake information and play an important role in earthquake monitoring. Aiming at the wider effective frequency bandwidth of magnetoelectric seismometers, a novel seismometer based on topology optimization structural pendulum is reported. The topology optimization of leaf spring structure in magnetoelectric seismometer is designed, the natural frequency and spurious frequency characteristics of the novel seismometer are analyzed. Based on variable density theory, the Solid Isotropic Material with Penalization (SIMP) model of the seismometer is established, and the Method of Moving Asymmetric (MMA) is adopted to obtain the optimal topology structure. The finite element analysis using ANSYS shows that novel seismometer after topology optimization structure is characteristic with lower natural frequency and higher spurious frequency than that of before optimization seismometer. The real vibration experimental results indicate that after topology optimization, the effective frequency bandwidth of seismometer is increased by 55.50%, improving from [1s, 51Hz] to [4s, 78Hz].

Optimization design of titanium alloy connecting rod based on structural topology optimization

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Bin Zheng ◽  
Yi Cai ◽  
Kelun Tang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Topology Optimization ◽  
Optimization Design ◽  
Equivalent Stress ◽  
Connecting Rod ◽  
Element Analysis ◽  
Content Type ◽  
The Finite Element Analysis ◽  
Maximum Equivalent Stress

Purpose The purpose of this paper is to realize the lightweight of connecting rod and meet the requirements of low energy consumption and vibration. Based on the structural design of the original connecting rod, the finite element analysis was conducted to reduce the weight and increase the natural frequencies, so as to reduce materials consumption and improve the energy efficiency of internal combustion engine. Design/methodology/approach The finite element analysis, structural optimization design and topology optimization of the connecting rod are applied. Efficient hybrid method is deployed: static and modal analysis; and structure re-design of the connecting rod based on topology optimization. Findings After the optimization of the connecting rod, the weight is reduced from 1.7907 to 1.4875 kg, with a reduction of 16.93%. The maximum equivalent stress of the optimized connecting rod is 183.97 MPa and that of the original structure is 217.18 MPa, with the reduction of 15.62%. The first, second and third natural frequencies of the optimized connecting rod are increased by 8.89%, 8.85% and 11.09%, respectively. Through the finite element analysis and based on the lightweight, the maximum equivalent stress is reduced and the low-order natural frequency is increased. Originality/value This paper presents an optimization method on the connecting rod structure. Based on the statics and modal analysis of the connecting rod and combined with the topology optimization, the size of the connecting rod is improved, and the static and dynamic characteristics of the optimized connecting rod are improved.

Design Optimization of Single-Phase Outer-Rotor 8S-8P Hybrid Excitation Flux Switching Motor for Electric Vehicle

2014 ◽  
Vol 695 ◽  
pp. 761-764
Author(s):  
Mohamed Mubin Aizat Mazlan ◽  
Erwan Sulaiman ◽  
Md Zarafi Ahmad ◽  
Zhafir Aizat Husin ◽  
Hassan Ali Soomro
Keyword(s):  
Design Optimization ◽  
Optimization Design ◽  
Single Phase ◽  
Direct Drive ◽  
Element Analysis ◽  
Outer Rotor ◽  
Hybrid Excitation ◽  
Final Design ◽  
Advance Research ◽  
Flux Switching Motor

Nowadays, in-wheel motors applied in pure electric vehicles (EVs) propulsion systems have attracted great attention in advance research and development. In-wheel direct drive provides quick torque response, higher efficiency, weight reduction, and increased vehicle space. As one of alternative, a new design of outer-rotor hybrid excitation flux switching motor (ORHEFSM) for in-wheel drive EV is proposed. In this paper, the optimization design of single-phase 8S-8P outer rotor HEFSM is analysed. Open and close circuit of initial and final design is compared based on 2-D finite element analysis (FEA). The design optimization has been made on the initial design machine shows that there is great enhancement on torque and power.

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