About input data selection for the FEM analysis of bulk forming

Tomov, B.; Minev, Roussi; Radev, Rossen; Gagov, V.

doi:10.1016/s0924-0136(02)00233-9

Cited by 12 publications

(7 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The manners, described in [6][7][8][9][10][11][12][13] are suitable. In this study the applied recommendations, indicated in publication calculated by using finite element method simulation on the computer are shown in Table 2.…”

Section: Experiments and Resultsmentioning

confidence: 99%

An example of determination of preforming steps in hot die forging

Tomov¹,

Radev²

2004

Journal of Materials Processing Technology

View full text Add to dashboard Cite

Section: Experiments and Resultsmentioning

confidence: 99%

An example of determination of preforming steps in hot die forging

Tomov¹,

Radev²

2004

Journal of Materials Processing Technology

View full text Add to dashboard Cite

“…Fig. 3, the coordinate grid method [3][4][5] that consists of measuring the relative "distortions" in different directions (εх and εу) was used to calculate the deviations during the photopolymerization of the printed model. The following equations were used:…”

Section: Methodsmentioning

confidence: 99%

Comparison of the Accuracy of 3D Printed Prototypes Using the Stereolithography (SLA) Method with the Digital CAD Models

Yankov

Nikolova

2017

MATEC Web Conf.

View full text Add to dashboard Cite

Abstract. Each printing method and the materials used for prototype construction have distinct advantages and drawbacks. A large part of the 3D printer producers indicates high printing accuracy (positioning accuracies from 100 µm up to 1 µm and layer thickness from 100 µm tо 5 µm). In the process of layers deposition, the material is softened, melted or irradiated with a certain light source to polymerize. Thus, during the printing process, the volume of the materials is changing causing shrinking or expansion which often leads to the occurrence of precision errors in the prototype as opposed to the digital model. This phenomenon leads to distortions of the printed object known as a curling effect. Certain chemical compounds are added by the producers to multiple materials in order to enhance their mechanical and technological properties. However, this often results in changes of some printing parameters influencing the precision and quality of the manufactured object. The aim of the particular study is to establish the allowances with regard to the accuracy during manufacturing precise objects used in micro technologies as well as the necessary adjustments in dimensions because of the shrinkage and the positioning of the SLA 3D printed parts from photopolymer material.

show abstract

“…In finite element analysis of metal forming process, a suitable material model is a prerequisite. Tomov et al [1] have shown that proper material model is a key factor for realistic FE simulation. These models are in the forms of certain mathematical equations whose coefficients are arrived by data fitting obtained from experiments.…”

Section: Introductionmentioning

confidence: 99%

Process and die design for rod extrusion of γ iron

2009

View full text Add to dashboard Cite

This study is related to materials modeling and die and process design of rod extrusion of γ iron. Strain dependent rate power law is used for materials modeling whose coefficients are arrived at through genetic algorithm (GA). Die profile of the rod extrusion process is optimized to produce products of desirable microstructure at maximum production speed and minimum left out material in the die. The design problem is formulated as a nonlinear programming problem which is solved using GA. Selection of the processing parameters is carried out using dynamic materials modeling (DMM). Using this approach rod extrusion process of γ iron is successfully designed. FE simulation on the optimum profile is also attempted to study deformation behaviour and load requirement.

show abstract

About input data selection for the FEM analysis of bulk forming

Cited by 12 publications

References 1 publication

An example of determination of preforming steps in hot die forging

An example of determination of preforming steps in hot die forging

Comparison of the Accuracy of 3D Printed Prototypes Using the Stereolithography (SLA) Method with the Digital CAD Models

Process and die design for rod extrusion of γ iron

Contact Info

Product

Resources

About