Finite Element Analysis and Optimization for the Structure of NC Forming Machine

2014 ◽  
Vol 945-949 ◽  
pp. 166-173
Author(s):  
Li Min Liu ◽  
Zhong De Shan ◽  
Feng Liu
Keyword(s):  
Finite Element ◽  
Structural Design ◽  
Numerical Control ◽  
Fundamental Function ◽  
Element Analysis ◽  
Main Structure ◽  
Overall Design ◽  
Safety And Reliability ◽  
Processing Module ◽  
Finite Element Numerical Simulation

Numerical control (NC, for short) forming machine is kind of digital forming equipment, which is based on the development of manufacturing technology without pattern, and can get mold by processing module directly, and its mechanical structure is mainly composed of the main structure, moving system, tool system and other components. The main structure is not only the foundation and framework of the entire machine, but also the most important component bearing pressure. The moving system is the most critical part of forming machine to achieve its fundamental function. Therefore, the design and development of the main structure and moving system have directly impact on the performance and service life of the forming machine, which is an important factor to reflect the level of the overall design. In this paper, structural static analysis of the main structure and moving system was made through finite element numerical simulation, the more reasonable scheme was optimized, by which the safety and reliability of forming machine was ensured. The research results can provide the necessary technical support for the structural design of NC forming machine.

Solid Finite Element Analysis on close Frame of Airport Project

2015 ◽  
Vol 744-746 ◽  
pp. 860-863
Author(s):  
Qi Jie Teng
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Structural Design ◽  
Load Capacity ◽  
Structure Type ◽  
Element Analysis ◽  
Heavy Load ◽  
Main Structure ◽  
Engineering Significance ◽  
Underground Passage

The close-frame is the main structure type of underground passage in airport project. Its characteristics are long route, multi-zone crossing, heavy load capacity. The suitable calculation method is a key issue to simulate the force of structure. Single-span close frame bearing Class A380F aircraft load is discussed in detail about stress and moment by solid finite element analysis. Therefore, it has important engineering significance in guiding structural design.

A Design Process for a Foldable Container Structure Using a Finite Element Analysis

2014 ◽  
Vol 1079-1080 ◽  
pp. 348-353
Author(s):  
Sang Heon Yoon ◽  
Yang Jai Shin ◽  
Yong Shin Lee
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Design Process ◽  
Element Analysis ◽  
Iso Standard ◽  
Main Structure ◽  
The Finite Element Analysis ◽  
Standard Regulation

This study is concerned with a design process for a foldable container structure using a finite element analysis. A foldable container structure consists of frames, panels and hinge systems. The main structure of a foldable container carries all the loads while a hinge system is designed to provide its foldability. In this work, finite element structural analyses for the main foldable container structure are carried out based on the ISO standard regulation, whose results are then taken for the design of a hinge system. The finite element analysis with two types of hinge systems are also performed. It is found out that the main structure of a standard 20ft container could be used for the foldable container with the same capacity if the corner edge in the side assembly is strengthened. It is also concluded that the hinge systems proposed in this work could be successfully used in a foldable 20ft container.

Structural Design of the Robot Arm for Massage Based on the Chain Drive

2012 ◽  
Vol 605-607 ◽  
pp. 1547-1551
Author(s):  
Zhan Li Wang ◽  
Qian Liang ◽  
Bang Cheng Zhang
Keyword(s):  
Structural Design ◽  
Elbow Joint ◽  
Structure Design ◽  
Robot Arm ◽  
Chain Drive ◽  
Element Analysis ◽  
Overall Design ◽  
Transfer Mode ◽  
Design Requirements ◽  
Robot Technology

With the development of robot technology, massage robot has attracted fully attention, and the study about robot arm has been a growing interest in the area of massage robot. This article has put forward a new massage robot arm, which uses the chain as the main transfer mode by the requirements of the overall design massage of the robot arm. The design of big arm, shoulder joint, forearm, elbow joint and wrist are introduced. Based on the design requirements, we made some improvements with sprockets, ensuring transmission conditions and meeting the massage requirements. And finite element analysis for the designed arm, results show that the structure design can meet the requirements.

Forming and springback prediction in press brake air bending combining finite element analysis and neural networks

2018 ◽  
Vol 53 (8) ◽  
pp. 584-601 ◽  
Author(s):  
Sara S Miranda ◽  
Manuel R Barbosa ◽  
Abel D Santos ◽  
J Bessa Pacheco ◽  
Rui L Amaral
Keyword(s):  
Neural Networks ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Sheet Metal ◽  
Computer Numerical Control ◽  
Numerical Control ◽  
Forming Process ◽  
Element Analysis ◽  
Air Bending ◽  
Springback Prediction

Press brake air bending, a process of obtaining products by sheet metal forming, can be considered at first sight a simple geometric problem. However the accuracy of the obtained geometries involves the combination of multiple parameters directly associated with the tools and the processing parameters, as well as with the sheet metal materials and dimensions. The main topic herein presented deals with the capability of predicting the punch displacement process parameter that enables the product to be accurately shaped to a desired bending angle, in press brake air bending. In our approach, it is considered separately the forming process and the elastic recovery (i.e. the springback effect). Current solutions in press brake numerical control (computer numerical control) are normally configured by analytical models developed from geometrical analysis and including correcting factors. In our approach, it is proposed to combine the use of a learning tool, artificial neural networks, with a simulation and data generation tool (finite element analysis). This combination enables modeling the complex nonlinear behavior of the forming process and springback effect, including the validation of results obtained. A developed model taking into account different process parameters and tool geometries allow extending the range of applications with practical interest in industry. The final solution is compatible with its incorporation in a computer numerical control press brake controller. It was concluded that, using this methodology, it is possible to predict efficient and accurate final geometries after bending, being also a step forward to a “first time right” solution. In addition, the developed models, methodologies and obtained results were validated by comparison with experimental tests.

Microcomputer analysis of reinforced concrete slab systems

1993 ◽  
Vol 20 (4) ◽  
pp. 587-601 ◽  
Author(s):  
Pierre Léger ◽  
Patrick Paultre
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Structural Design ◽  
Concrete Slab ◽  
Three Dimensional ◽  
Structural Behaviour ◽  
Reinforced Concrete Slab ◽  
Element Analysis ◽  
Equivalent Frame ◽  
Frame Method

Microcomputer finite element analysis of reinforced concrete slab systems can now be routinely performed to produce realistic numerical simulation of three-dimensional structural behaviour. However, an efficient use of this approach requires an automated integration of design and analysis procedures. Guidelines for proper finite element modelling of slab systems are first presented along with simple post-processing algorithms to perform automatically the design or verifications from the analytical results. Numerical applications on simple slab systems subjected to uniform and concentrated loads are then used to illustrate the relative performance between finite element analyses and the equivalent frame method. Key words: microcomputer, reinforced concrete slab, finite element method, structural design.

Structural Design and Finite Element Analysis of Unfolding Process for All Composite Folding Wing of UAV

2010 ◽  
Vol 163-167 ◽  
pp. 2328-2332 ◽  
Author(s):  
Peng Lv ◽  
Sheng Li Lv ◽  
Guang Jun Yang ◽  
Qing Na Zeng ◽  
Xiao Yan Tong
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Structural Design ◽  
Third Order ◽  
Element Analysis ◽  
Impact Action ◽  
Flutter Analysis ◽  
Folding Wing ◽  
Overall Performance ◽  
Composite Wing

This paper discusses the unfolding form of the folding wing and its application to special UAV. The main investigations involve aspects such as unfolding process of the special UAV’s folding wing, contour structure of the complete unfolding, the choice of composite materials for the folding wing and its overall performance parameters. Modeling and dynamics analysis are made for all-composite wing through finite element analysis and calculating software. The unfolding process is also simulated. The result shows that the wing’s first-order frequency is low, second-order frequency and third-order frequency are close at different sweep angles. The wings are apt to happen flutter coupling in flutter analysis. With the continued folding of the wing, the wing’s natural frequency decreases significantly at different orders. The conclusions can provide effective basis for the study of wing rotational rate, unfolding time and impact action.

scholarly journals Analysis of Wellhead Uplift in Offshore Thermal Recovery by Using Finite Element Numerical Simulation

2018 ◽  
Vol 2018 ◽  
pp. 1-7
Author(s):  
Shexia Dong ◽  
Dongsheng Zhuang ◽  
Gongming Ji ◽  
Chunming Zhu ◽  
Ting Sun
Keyword(s):  
Finite Element ◽  
Total Elongation ◽  
Thermal Recovery ◽  
Operating Conditions ◽  
Oil Field ◽  
Oil Well ◽  
Test Results ◽  
Element Analysis ◽  
Simulation Calculation ◽  
Finite Element Numerical Simulation

Pilot test of complex thermal fluid recovery technology was conducted in NB35-2 heavy oil field. Wellhead uplift was detected among some oil wells, and development of offshore thermal recovery technology could be restricted by the serious safety problems behind. This paper is based on the specific operating conditions of one oil well in the trial block, and the simulation calculation of casing elongation and wellhead uplift are conducted by using finite element analysis. The total casing elongation calculated is 4.2 cm, which is consistent with the field test results. According to the research, we concluded that the wellhead uplift is caused by upper casing elongation. 88% of the total elongation happens in the air and seawater sections. Elongation is lesser in strata and the casing string below 360 m can be considered as anchored.

Manned Cableway Tower Operating Mode of the Finite Element Analysis

2013 ◽  
Vol 791-793 ◽  
pp. 831-834
Author(s):  
Jian Chun Gong ◽  
Deng Rong Zhou
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Operating Mode ◽  
Calculation Model ◽  
Graphical Display ◽  
Element Analysis ◽  
Analysis Process ◽  
The Finite Element Analysis ◽  
Mapping Analysis ◽  
Processing Module

Make a tower calculation model according to the requirement, this paper using i-deas software the finite element analysis on it. According to given all kinds of tower under the condition of displacement field, stress field, the analysis process of tower adopts hexahedral and tetrahedral entity processing units mapping, analysis of the results using i-deas software in the post-processing module for data processing and graphical display

Structure Analysis of Electron Gun Deflection Coil Based on ProE and ANSYS

2011 ◽  
Vol 201-203 ◽  
pp. 1352-1355
Author(s):  
Hai Lang Liu ◽  
Rui Bin Zhang ◽  
Yi Ping Huang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Structure Analysis ◽  
Structural Design ◽  
Electron Gun ◽  
Structure Modeling ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Coil Size

Through the example of the electron gun deflection coil, this paper implements the structure modeling with ProE and makes the finite element analysis with ANSYS .The structure analysis is performed by the combination of the advantages of two softwares. The reasonableness of the design is verified. This method helps to optimize the structural design of the coil. The production of precision of the coil was improved, and coil size can effectively control and reduce material waste.

Crack Resistance Capacity Analysis of SRC Column-RC Beam Node

2012 ◽  
Vol 204-208 ◽  
pp. 2994-3001 ◽  
Author(s):  
Bo Yuan ◽  
Ming Hui Zeng ◽  
Ke Jian Ma
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Crack Resistance ◽  
Shear Strain ◽  
Complex Stress ◽  
Rc Beam ◽  
Element Analysis ◽  
High Rise ◽  
Safety And Reliability ◽  
Normal Work

It is very important for connection of between beam and column, connection safety and reliability is premise to guarantee the normal work of the whole structure. Node often bears complex stress which includes compression, bending and shear, so the study of the mechanical properties and ascertained behavior of mechanical, failure mechanism of between beam and column is very important. This paper use finite element analysis software to analyze the node of between SRC column and RC beam which exist in high-rise buildings but relatively few researches at present. Analyzed cracking load-displacement relation and studied on relation of concrete shear strain-section steel wing shear strain and crack load of joint core with different axial compression ratio, According to data of finite element analysis, this paper bring forward formula of crack resistance capacity of SRC column-RC beam joint core, At last compare theory value calculated with formula with test data, there being less error, it indicate the formula is reliable.

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