scholarly journals Three-dimensional finite-element/nodal-control-volume simulation of the pultrusion process with temperature-dependent material properties including resin shrinkage

2001 ◽  
Vol 61 (11) ◽  
pp. 1539-1547 ◽  
Author(s):  
Sunil C. Joshi ◽  
Y.C. Lam
Keyword(s):  
Finite Element ◽  
Material Properties ◽  
Control Volume ◽  
Three Dimensional ◽  
Temperature Dependent ◽  
Pultrusion Process ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element ◽  
Nodal Control

Temperature Analysis of Piercing Process Based on Material Properties in Diescher's Mill with Finite Element Method

2013 ◽  
Vol 830 ◽  
pp. 93-96 ◽  
Author(s):  
Lu Lu ◽  
Hong Xia Cui
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Material Properties ◽  
External Surface ◽  
Three Dimensional ◽  
Internal Surface ◽  
Work Piece ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element ◽  
Element Method

In this paper, the simulation of the piercing process is performed by the three-dimensional finite-element method in Dieschers mill. The material properties of steel 33Mn2V are introduced. The simulated results visualize dynamic evolution of temperature, especially inside the workpiece. Its show the distribution of temperature on the internal and external surface of the work-piece is non-uniform. The temperature of the internal surface is far higher than that of the external surface of workpiece.

Three-Dimensional Finite Element Analysis of Surface Deformation and Stresses in an Elastic-Plastic Layered Medium Subjected to Indentation and Sliding Contact Loading

1996 ◽  
Vol 63 (2) ◽  
pp. 365-375 ◽  
Author(s):  
E. R. Kral ◽  
K. Komvopoulos
Keyword(s):  
Finite Element ◽  
Material Properties ◽  
Surface Deformation ◽  
Normal Load ◽  
Three Dimensional ◽  
Contact Stresses ◽  
Contact Radius ◽  
Layer Material ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

Three-dimensional finite element simulations of the indentation and sliding of a rigid sphere on a half-space with a harder and stiffer layer are presented. The sphere is modeled by contact elements, thereby avoiding a priori assumptions for the pressure profile. Indentations are performed to normal loads of 100 and 200 times the initial yield load of the substrate material and subsequent sliding is performed at a constant normal load to distances of approximately twice the indentation contact radius. Two complete load cycles are performed in selected cases to assess the effect of repeated sliding on the surface displacements and contact stresses. The effects of layer material properties, interface friction, and normal load on the sliding and residual contact stresses and forward plastic flow are examined. Emphasis is given to the sliding and residual tensile stresses at the surface in order to assess the consequences for crack initiation and subsequent failure as a function of the layer material properties, the coefficient of friction, and normal load. The finite element results are shown to be in good agreement with the results of analytical and experimental studies.

scholarly journals Finite Element Analysis of a Ribbed Roofing Panel under Static Flexure

2018 ◽  
Vol 3 (6) ◽  
pp. 15
Author(s):  
Chinedum Vincent Okafor
Keyword(s):  
Finite Element ◽  
Material Properties ◽  
Three Dimensional ◽  
Element Model ◽  
Element Analysis ◽  
Load Carrying ◽  
Dimensional Finite Element ◽  
Linear Material ◽  
Three Dimensional Finite Element ◽  
Static Conditions

This study focuses on analyzing the response of a typical ribbed aluminum panel under flexure. A three dimensional finite element model was developed to stimulate the static flexure behavior. The model is a 2.0m (length) x 1.0m (width) x 0.005m (Thickness) with a rib height of 0.038m, crest width of 0.019m and pan distance at 0.055m between intermediate ribs. The load deflection response of the aluminum panel under different flexural loading condition was stimulated. The linear material properties, displacement, stress and strain captured were discussed under static conditions. From the result obtained, the maximum uniformly distributed load carrying capacity of the ribbed aluminum roofing panel under flexure, considering the linear material properties is 665N.

Three Dimensional Effects in Composite Plates

1999 ◽  
Author(s):  
Santosh Prabhu ◽  
John Lambros
Keyword(s):  
Finite Element ◽  
Plane Stress ◽  
Material Properties ◽  
Three Dimensional ◽  
Crack Tip ◽  
Composite Plates ◽  
Fiber Direction ◽  
Specimen Thickness ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

Abstract In this study, a finite element investigation of the three dimensional nature of stress fields in the near tip region of a cracked orthotropic plate was conducted. Two and three dimensional finite element analyses were used to investigate the relative extent of regions of three dimensional to two dimensional (plane stress or plane strain) deformation in the cracked plate. The material properties used in the simulations corresponded to those of a graphite/epoxy composite. A three point bend loading geometry, with the fiber directions either parallel or perpendicular to the crack, was simulated. In analogy to isotropic materials, it was observed that a plane stress K-dominant region does not arise arbitrarily close to the crack tip because of the existence of a three dimensional zone. However, it was seen that the shape and the size of this three dimensional zone in the cracked composite plate is substantially different from that of an isotropic plate, and depends intimately on material properties. For a crack parallel to the fiber direction the three dimensional zone extends to 0.46h (h = specimen thickness) ahead of the crack tip but only to 0.27h at 30°. Fibers perpendicular to the crack produce a highly elongated three dimensional zone in the direction of the fibers (up to 0.78h). The zone is also sensitive to the variations in the Poisson’s ratio’s of the orthotropic solid.

A Polycrystalline Analysis of Hexagonal Metal Based on the Homogenized Method

2007 ◽  
Vol 340-341 ◽  
pp. 1049-1054 ◽  
Author(s):  
Yuichi Tadano ◽  
Mitsutoshi Kuroda ◽  
Hirohisa Noguchi ◽  
Kazuyuki Shizawa
Keyword(s):  
Finite Element ◽  
Flow Stress ◽  
Material Properties ◽  
Three Dimensional ◽  
Homogenization Method ◽  
Element Formulation ◽  
Plasticity Model ◽  
Dimensional Finite Element ◽  
Periodical Microstructure ◽  
Three Dimensional Finite Element

In this study, a three-dimensional finite element formulation for polycrystalline plasticity model based on the homogenization method has been presented. The homogenization method is one of the useful procedures, which can evaluate the homogenized macroscopic material properties with a periodical microstructure, so-called a unit cell. The present study focuses on hexagonal metals such as titanium or magnesium. An assessment of flow stress by the presented method is conducted and it is clarified how the method can reproduce the behavior of hexagonal metal.

Three-Dimensional Finite Element Analysis of Subsurface Stresses and Shakedown Due to Repeated Sliding on a Layered Medium

1996 ◽  
Vol 63 (4) ◽  
pp. 967-973 ◽  
Author(s):  
E. R. Kral ◽  
K. Komvopoulos
Keyword(s):  
Finite Element ◽  
Material Properties ◽  
Normal Load ◽  
Three Dimensional ◽  
Substrate Material ◽  
Contact Radius ◽  
Rigid Sphere ◽  
Element Analysis ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

Results of three-dimensional finite element simulations are presented for the subsurface stress and strain fields in a layered elastic-plastic half-space subjected to repeated sliding contact by a rigid sphere. A single perfectly adhering layer with an elastic modulus and yield strength both two and four times that of the substrate material is modeled. Applied sliding loads are equivalent to 100 and 200 times the initial yield load of the substrate material and sliding is performed to distances of approximately two times the contact radius. The effects of layer material properties and normal load on the loaded and residual stresses occurring from repeated load cycles are examined and compared with stresses produced during the first load cycle. Results for the maximum tensile stresses at the layer/substrate interface and the maximum principal stress in the substrate are presented and their significance for layer decohesion and crack initiation is discussed. Further yielding of substrate material during unloading is discussed, and the possibility of shakedown to an elastic or plastic loading cycle is analyzed for the different material properties and contact loads investigated.

Finite Element Analysis of Nonuniformity of Tires with Imperfections5

2007 ◽  
Vol 35 (3) ◽  
pp. 226-238 ◽  
Author(s):  
K. M. Jeong ◽  
K. W. Kim ◽  
H. G. Beom ◽  
J. U. Park
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Radial Force ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Dimensional Finite Element ◽  
Force Variation ◽  
Three Dimensional Finite Element

Abstract The effects of variations in stiffness and geometry on the nonuniformity of tires are investigated by using the finite element analysis. In order to evaluate tire uniformity, a three-dimensional finite element model of the tire with imperfections is developed. This paper considers how imperfections, such as variations in stiffness or geometry and run-out, contribute to detrimental effects on tire nonuniformity. It is found that the radial force variation of a tire with imperfections depends strongly on the geometrical variations of the tire.

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