Optimal design of extrusion dies using hp-adaptive finite element model

1998 ◽  
Author(s):  
Mahender Reddy ◽  
Olivier Hardy ◽  
Harold Thomas ◽  
Pramod Bangarpet
Keyword(s):  
Finite Element ◽  
Optimal Design ◽  
Finite Element Model ◽  
Element Model ◽  
Adaptive Finite Element ◽  
Extrusion Dies

Structural Optimization Scheme for Horizontal Filtering Tank

2014 ◽  
Vol 577 ◽  
pp. 310-313
Author(s):  
Ping Yang ◽  
Zhou De Qu ◽  
Min Li
Keyword(s):  
Finite Element ◽  
Optimal Design ◽  
Finite Element Model ◽  
Element Model ◽  
Structural Instability ◽  
Optimization Scheme ◽  
Design Scheme ◽  
Operation Process ◽  
The Impact ◽  
The Finite Element Model

Based on the impact of some horizontal filtering tank’s instability in operation process on production, the present paper discusses the optimal design scheme for horizontal filtering tank structure with the help of finite element. Theoretical guidance will be given to enterprise from the perspective of finite element for the purpose of improving the horizontal filtering tank through constructing the finite element model for horizontal filtering tank with Creo parametric software, conducting simulation with workbench software[1] and finally arriving at the reasonable design scheme after analysis, thus avoiding the structural instability caused by the over-constraint of structural leg support beam and filter plate under-constraint.

A Parallel h-Adaptive Finite Element Model for Wind Energy Assessment in Nevada

2003 ◽  
Author(s):  
Darrell W. Pepper ◽  
Yitung Chen ◽  
Joseph M. Lombardo
Keyword(s):  
Finite Element ◽  
Wind Energy ◽  
Finite Element Model ◽  
Initial Conditions ◽  
Meteorological Data ◽  
Equations Of Motion ◽  
Element Model ◽  
Adaptive Finite Element ◽  
Galerkin Finite Element ◽  
Energy Assessment

A Petrov-Galerkin finite element model that employs local mesh adaptation is being developed to determine potential wind energy sites within the state of Nevada. Meteorological data collected from various private, county, city, and government agencies are used to generate diagnostic flow fields, which subsequently provide initial conditions for the prognostic solution of the time-dependent equations of motion and species transport. The model runs on a multiprocessor SGI Onyx 3800. Results of the data collection, including wind energy site forecasts, will be made available on the web when the assessment for the entire state is completed.

An H-Adaptive Finite Element Model for Constructing 3-D Wind Fields

2004 ◽  
Author(s):  
Xiuling Wang ◽  
Darrell W. Pepper ◽  
Yitung Chen ◽  
Hsuan-Tsung Hsieh
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Wind Field ◽  
Compressible Flows ◽  
Element Model ◽  
Computational Time ◽  
Individual Element ◽  
Adaptive Finite Element ◽  
Wind Fields ◽  
Irregular Terrain

Calculating wind velocities accurately and efficiently is the key to successfully assessing wind fields over irregular terrain. In the finite element method, decreasing individual element size (increasing the mesh density) and increasing shape function interpolation order are known to improve accuracy. However, computational speed is typically impaired, along with tremendous increases in computational storage. This problem becomes acutely obvious when dealing with atmospheric flows. An h-adaptation scheme, which allows one to start with a coarse mesh that ultimately refines in high gradients regions, can obtain high accuracy at reduced computational time and storage. H-adaptation schemes have been shown to be very effective in compressible flows for capturing shocks [1], but have found limited use in atmospheric wind field simulations [2]. In this paper, an h-adaptive finite element model has been developed that refines and unrefines element regions based upon velocity gradients. An objective analysis technique is applied to generate a mass consistent 3-D flow field utilizing sparse meteorological data. Results obtained from the PSU/NCAR MM5 atmospheric model are used to establish the initial velocity field in lieu of available meteorological tower data. Wind field estimations for the northwest area of Nevada are currently being examined as potential locations for wind turbines.

Idealised flow past an island in a dynamically adaptive finite element model

2010 ◽  
Vol 60 (4) ◽  
pp. 835-850 ◽  
Author(s):  
David R. Munday ◽  
David P. Marshall ◽  
Matthew D. Piggott
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Adaptive Finite Element ◽  
Flow Past

Model Analysis of Car’s Body-in-White Based on FEA

2011 ◽  
Vol 354-355 ◽  
pp. 454-457
Author(s):  
Yuan Wang ◽  
Li Xu ◽  
Xi Liang Dai ◽  
Sheng Hui Peng
Keyword(s):  
Finite Element ◽  
Optimal Design ◽  
Finite Element Model ◽  
Element Model ◽  
Model Analysis ◽  
The Body ◽  
Dynamic Parameters ◽  
Modal Test ◽  
Body In White ◽  
The Finite Element Model

In this paper, the finite element model of some car’s body-in-white is established in Hypermesh. The model analysis is executed based on the element model in ANSYS. Through the model analysis the dynamic parameters of the body-in-white are obtained. At the same time，the modal test of a real car body is implemented. The reliability of the finite element model is validated based on the modal test. The results show that the stiffness of the body-in-white is great enough and it can provide optimal design for future designers.

Optimal Design for Stator of a New Linear Ultrasonic Motor

2014 ◽  
Vol 536-537 ◽  
pp. 1047-1051
Author(s):  
Shi Ping Sun ◽  
Zheng Hu
Keyword(s):  
Finite Element ◽  
Optimal Design ◽  
Theoretical Analysis ◽  
Finite Element Model ◽  
Element Model ◽  
Ultrasonic Motor ◽  
Wave Type ◽  
Linear Ultrasonic Motor ◽  
Working Frequency ◽  
Bending Modes

In this paper, the working frequency band gap of ultrasonic motor (USM) was investigated under finite element model and experimental prototype. The findings indicate that the discrepancy between theoretical analysis and experimental test is mainly related to the fixation conditions of stator. This work proposes a new geometrical symmetrical stator for standing-wave-type linear USM to reduce the discrepancy. The first longitudinal and the second bending modes of stator are combined to drive the USM. Parameterized finite element model with actual boundary is developed to analyze and optimize the stator performance. The results show that the gap between working frequencies can be substantial reduced compared to the initial design.

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