Finite element model simulation of hot forging of seamless elbow fittings

2005 ◽  
Vol 219 (2) ◽  
pp. 85-90 ◽  
Author(s):  
E Salas-Zamarripa ◽  
M P Guerrero-Mata ◽  
R Colás ◽  
J Martínez
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Model Simulation ◽  
Hot Forging ◽  
Element Model ◽  
Raw Material ◽  
Tooling Design ◽  
Critical Characteristics ◽  
Software Code ◽  
Hot Forging Process

This work presents the implementation of the hot-forging process of seamless elbow fittings into a finite element model (FEM) developed with the aid of a commercial software code. The strain gradients predicted by the FEM were compared with the strain distributions computed by a visioplastic analysis. Measurements made on forged elbows are used to validate the predictions of the FEM. Once the validation was successful, the FEM is used to evaluate the effect that the tooling design exerts on the final dimensions and characteristics of formed elbows; this was done by changing the design of the tooling (mandrel). Two critical characteristics are required in forged elbows; these are consistency in wall thickness and length of the external arc, as wall consistency is directly associated with product quality, whereas control on the length contributes to savings in raw material. Results found by the FEM allows the conclusion that these characteristics are related to each other.

Dynamic Analysis and Experiment of Beamlike Space Deployable Lattice Truss

2011 ◽  
Vol 199-200 ◽  
pp. 1273-1280
Author(s):  
Hong Wei Guo ◽  
Rong Qiang Liu ◽  
Zong Quan Deng
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Continuum Model ◽  
Model Simulation ◽  
Element Model ◽  
Mode Shapes ◽  
Equivalent Continuum Model ◽  
Simulation Results ◽  
Equivalent Continuum ◽  
The Finite Element Model

The dynamic equivalent continuum model of beamlike space deployable lattice truss which is repetition of the basic truss bay is established based on the energy equivalence. The finite element model of the lattice truss is also developed. Free vibration frequencies and mode shapes are calculated and simulated based on equivalent continuum model and discrete finite element model. The analytical solutions calculated by equivalent continuum model match well with the finite element model simulation results. A prototype of deployable lattice truss consist of 20 truss bays is manufactured. The dynamic response of lattice truss with different truss bays are tested by dynamic vibration experiment, and natural frequencies of lattice truss with different length are obtained from acceleration response curves. The experiment results are compared with simulation results which verifies that the correctness of finite element model, which also validate the effectiveness of equivalent continuum model indirectly.

scholarly journals A fully three-dimensional finite-element model applied to velocities on Storglaciären, Sweden

1995 ◽  
Vol 41 (137) ◽  
pp. 91-102 ◽  
Author(s):  
Brian Hanson
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Model Simulation ◽  
Three Dimensional ◽  
Element Model ◽  
Three Dimensions ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element ◽  
Type Power ◽  
Flow Plane

AbstractA finite-element model that solves the stress-balance equations for glacier dynamics in three dimensions has been developed by extending previous flow-plane models. This model retains all terms of the stress tensor and uses a Glen-type power law for viscosity calculations. In the paper, the model is applied to Storglaciären, Sweden, to explore both the glacier’s dynamics and the model’s characteristics. Values of the stiffness parameterBof 0.20–0.22 MPa year1/nwere required to match observed strain rates on Storglaciären. Overall velocities required imposition of a problematically small sliding speed. Stress fields implied by the model simulation showed that the glacier receives its largest driving force from a high-slope zone near the equilibrium line, and that a large proportion of the resistive stress comes from lateral drag. Lateral drag is enhanced on this glacier by being frozen to its sidewalls and by a turning of the main flow as it comes out of the main, or northern, cirque.

Finite element model-simulation-based characterization of a magnetostrictive gyrosensor

2010 ◽  
Vol 107 (9) ◽  
pp. 09E705 ◽  
Author(s):  
U. Marschner ◽  
F. Graham ◽  
C. Mudivarthi ◽  
J.-H. Yoo ◽  
H. Neubert ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Model Simulation ◽  
Element Model ◽  
Simulation Based ◽  
Finite Element Model Simulation

Modeling and Estimation of Rheological Properties Based on Finite Element Analysis and Computer Simulation Technology

2013 ◽  
Vol 427-429 ◽  
pp. 293-297
Author(s):  
Qi Jun Zhang
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Rheological Properties ◽  
Model Simulation ◽  
Raw Materials ◽  
Estimation Method ◽  
Element Model ◽  
Fe Model ◽  
Element Analysis ◽  
Physical Model Simulation

By the relevant engineering and manufacturing of food rheological properties to estimate, and developing unified object based on 2D/3D dynamic finite element model, to carry out physical model simulation of five elements, then to further extended to deal with heterogeneous hierarchical objects. There are three kinds of food raw materials that are tested, its deformation and mechanical behavior are also assessed, and then according to the optimization FE, it is proposed to estimate the object's rheological properties. The results show that the FE model and the estimation method can accurately reproduce food rheological and deformation, and in the manufacturing process, the finite element model can be used to predict the rheological behavior of food products.

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