A finite element model for hydrodynamic lubrication of cold extrusion with frictional boundary condition

2005 ◽  
Vol 161 (3) ◽  
pp. 440-444 ◽  
Author(s):  
Hongbo Yang ◽  
Yinghong Peng ◽  
Xueyu Ruan ◽  
Mingxia Liu
Keyword(s):  
Boundary Condition ◽  
Finite Element ◽  
Finite Element Model ◽  
Hydrodynamic Lubrication ◽  
Element Model ◽  
Cold Extrusion

Theoretical and Finite Element Analysis of Crosshead of Quintuple Cylinders Fracturing Pump

2011 ◽  
Vol 201-203 ◽  
pp. 253-256 ◽  
Author(s):  
Zhi Peng Lv ◽  
Si Zhu Zhou ◽  
Xiu Hua Ma
Keyword(s):  
Boundary Condition ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Maximum Force ◽  
Element Analysis ◽  
Plunger Pump ◽  
Load Handling ◽  
The Finite Element Model

According to the plunger pump movement principle, this paper analyzed the two kind of typical force situation of the crosshead, and obtained the theoretical maximum force. Established the finite element model of the crosshead, gave an analysis to the load handling and boundary condition. The last results of the node stress and displacement show that the crosshead can work safely.

Finite Element Simulation of Metal Structure for Container Stacker Based on Ansys

2011 ◽  
Vol 94-96 ◽  
pp. 2080-2083
Author(s):  
Zhi Jian Li ◽  
Jian Kun Zhang
Keyword(s):  
Boundary Condition ◽  
Finite Element ◽  
Finite Element Model ◽  
Metal Structure ◽  
Element Model ◽  
Calculation Model ◽  
Ansys Software ◽  
Element Simulation ◽  
Calculation Results ◽  
The Finite Element Model

The finite element model of metal structure of 45 tons container stacker is established and Ansys software is employed to calculate the stress of key parts. The skill of model processing of the complete machine and the boundary condition of calculation model is described. The calculation results are used to guide the design of the container stacker.

The Method of Modal Parameters to Determine the Boundary Condition of Finite Element Model

1991 ◽  
Author(s):  
Chen Shiyu ◽  
Wang Fengquan
Keyword(s):  
Boundary Condition ◽  
Finite Element ◽  
Finite Element Model ◽  
Interpolation Method ◽  
Element Model ◽  
Accurate Method ◽  
Modal Parameters ◽  
Computation Method ◽  
Modal Parameter ◽  
The Third

Abstract In this paper, a method used to determine the boundary condition of Finite Element Model with structure modal parameters is presented. On deriving the method, the theory of Finite Element Model for dynamic calculating is used. Combined with the modal parameters got from experiment, a FEM-Modal Parameter equation to determine the boundary condition is put forward. For solving the equation, three methods are given. The first is the accurate method. The second is the full mode computation method by means of generlized inverse matrix. The third is the interpolation method of frequency. An applied example is given and the results of calculation fully verify the effectiveness of the method offered.

A Concise Finite Element Model for the Analysis of Simple Wire Strand with a Broken Helical Wire

2012 ◽  
Vol 446-449 ◽  
pp. 745-750 ◽  
Author(s):  
Wen Guang Jiang ◽  
Li Juan Yan
Keyword(s):  
Boundary Condition ◽  
Finite Element ◽  
Finite Element Model ◽  
Cross Section ◽  
Axial Load ◽  
Three Dimensional ◽  
Element Model ◽  
Analysis Model ◽  
Symmetric Boundary Condition ◽  
Wire Strand

A concise finite element model for the analysis of simple wire strand with a broken helical wire under axial load is presented in this paper. Due to the implementation of accurate helically symmetric boundary condition, the analysis model can be established based only on a small slice of the wire strand cross-section consisting of all of the remaining intact wires excluding the broken helical wire. Full three-dimensional solid elements were used for structural discretization. The finite element results showed that the sharing of loads among the remaining helical wires is highly non-uniform. The two helical wires adjacent to the broken helical wire bear higher loads. The helical wire opposite to the broken wire bears least load.

Parameter Identification with FEM on Absorbing Boundary Condition and Genetic Algorithm (GA)

2011 ◽  
Vol 52-54 ◽  
pp. 850-853 ◽  
Author(s):  
Jian Mei Chang ◽  
Huai Ping Feng
Keyword(s):  
Boundary Condition ◽  
Finite Element ◽  
Finite Element Model ◽  
Radiation Condition ◽  
Element Model ◽  
Global Optimum ◽  
Forward Problem ◽  
Absorbing Boundary Condition ◽  
Absorbing Boundary ◽  
Backward Problem

Researches of wave motion are important on theory and application. The forward problem and the backward problem are the two aspects that relate with each other. In this paper, with the combination of FEM considering BGT absorbing boundary condition for forward problem and GA method, the inversion of target’s characters in infinite area is discussed. The absorbing boundary condition is obtained through approximating the Sommerfeld radiation condition. Although the absorbing boundary condition can’t simulate the effect exactly, it can reach the limitation in the practice and has the character of solving the coupling that simplifies the calculations. Because of the use of finite element model method, the forward problems that involve special geometrical shaped scatter and multi scatters can be solved. The finite element model is used iteratively to compute the scattered field. In the inversion process, the GA method is adopted because of its advantage of global optimum search and parallel calculation. The numerical simulation examples of single and multiple show the validity of this method.

scholarly journals Boundary condition focused finite element model updating for bridges

2019 ◽  
Vol 198 ◽  
pp. 109514 ◽  
Author(s):  
David Hester ◽  
Ki Koo ◽  
Yan Xu ◽  
James Brownjohn ◽  
Mateusz Bocian
Keyword(s):  
Boundary Condition ◽  
Finite Element ◽  
Finite Element Model ◽  
Model Updating ◽  
Element Model ◽  
Finite Element Model Updating

Multiphase hydrodynamic lubrication flow using a three-dimensional shell finite element model

2013 ◽  
Vol 87 ◽  
pp. 12-25 ◽  
Author(s):  
Scott A. Roberts ◽  
David R. Noble ◽  
Eric M. Benner ◽  
P. Randall Schunk
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Hydrodynamic Lubrication ◽  
Three Dimensional ◽  
Element Model ◽  
Shell Finite Element

Multistage Cold Extrusion Process and Forming Rules of Shaft Parts Used in Gearbox

2010 ◽  
Vol 148-149 ◽  
pp. 683-687
Author(s):  
Dong Sheng Ji ◽  
Jun Song Jin ◽  
Wei Jie Ma ◽  
Ju Chen Xia ◽  
Han Guan Xia ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Formation Mechanism ◽  
Element Model ◽  
Production Method ◽  
Extrusion Process ◽  
Cold Extrusion ◽  
Forming Process ◽  
Mechanical Coupling ◽  
Extrusion Technology

The production method of a driving axles used in gearbox is presented in this paper. A five-stage cold extrusion technology for forming the driving axle was made. First, simulations based on thermal-mechanical coupling finite element model were performed with Deform_2D. During the forming process, the concave appeared at the shaft end. And its formation mechanism was studied. Then the forming rules were obtained. Corresponding experiments were carried out and quality forging was achieved. Simulation and experimental results both indicate that the five-stage cold extrusion technology was feasible.

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