FE Study of the Chips Morphology when Drilling Process

The finite element modeling allows manufacturers to reduce the cost of machining operations. During a drilling operation, the chips morphology their sizes and thicknesses have a great effect on the process, whatever the material to be machined. One approach to a 3D simulation of a drilling process with the finite element program Abaqus/Explicit is displayed. We studied the morphology of chips during the drilling process, the influence of cutting parameters on their shape, size and clear velocity. This study allows us to optimize the conditions and cutting parameters for a smooth process.

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Development of Retrieval System for Case Data of Finite Element Modeling

ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium ◽

10.1115/cie1995-0751 ◽

1995 ◽

Author(s):

Shigeru Nagasawa ◽

Masafumi Nomura ◽

Yasunori Miyata ◽

Hiroshi Sakuta

Keyword(s):

Finite Element ◽

Finite Element Modeling ◽

Retrieval System ◽

General Purpose ◽

Estimation Model ◽

Finite Element Program ◽

Element Modeling ◽

Noise Filter ◽

Element Program ◽

Hypertext Markup Language

Abstract This paper deals with support system for finite element modeling and with a methodology for case base retrieving. An estimation model of case similarity is proposed based on the hamming function, defined with vectorized attribute codes. The pertinence of proposed similarity computation is verified experimentally through usage examples for a general purpose finite element program. And relevance of partial identification, or applicability of noise filter for similarity is recognized. Moreover, as a proto-type case retrieval system have been developed with the hypertext markup language (HTML), a hybrid interactive representation composed of picture image retrieval and abstracted subject retrieval could be shown.

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Parametric Study on Simulation Modeling of Diameter-Expanded Conductor

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.815.69 ◽

2013 ◽

Vol 815 ◽

pp. 69-72

Author(s):

Jia Jun Si ◽

Kuan Jun Zhu ◽

Jian Cheng Wan ◽

Jia Lun Yang ◽

Long Liu ◽

...

Keyword(s):

Finite Element ◽

Parametric Study ◽

Simulation Modeling ◽

Test Method ◽

Design Stage ◽

Finite Element Program ◽

Instability Problem ◽

Element Simulation ◽

Element Program ◽

The Cost

So as to decrease the cost and time of the development, it is significance to solve the section instability problem of diameter-expanded conductor during the design stage. The solution is developing a finite-element simulation program for the study of section stability; however, a proper modeling method is not necessary. In this paper, the parametric study on simulation modeling of diameter-expanded conductor is carried out and through the investigation, analysis and verification; a kind of test method has been designed for the study. After a series of test under different tensions, the numbers of sheave, the position of strand jumping, the section states and the indentation states have been gotten. At last, a parametric finite-element program for strand jumping prediction has been simulated and the result shows that the code developed is reliable based on the comparison of the calculated results and the measured ones.

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Thermo-Mechanical Finite Element Modeling of the Friction Drilling Process

Journal of Manufacturing Science and Engineering ◽

10.1115/1.2716719 ◽

2007 ◽

Vol 129 (3) ◽

pp. 531-538 ◽

Cited By ~ 42

Author(s):

Scott F. Miller ◽

Albert J. Shih

Keyword(s):

Finite Element ◽

Plastic Strain ◽

Finite Element Modeling ◽

Thrust Force ◽

Drilling Process ◽

Mass Scaling ◽

Element Modeling ◽

Material Deformation ◽

Work Material ◽

Friction Drilling

Friction drilling uses a rotating conical tool to penetrate the workpiece and create a bushing in a single step without generating chips. This research investigates the three-dimensional (3D) finite element modeling (FEM) of large plastic strain and high-temperature work-material deformation in friction drilling. The explicit FEM code with temperature-dependent mechanical and thermal properties, as well as the adaptive meshing, element deletion, and mass scaling three FEM techniques necessary to enable the convergence of solution, is applied. An inverse method to match the measured and modeling thrust force determines a coefficient of friction of 0.7 in this study. The model is validated by comparing the thrust force, torque, and temperature to experimental measurements with reasonable accuracy. The FEM results show that the peak temperature of the workpiece approaches the work-material solidus temperature. Distributions of plastic strain, temperature, stress, and deformation demonstrate the thermomechanical behavior of the workpiece and advantages of 3D FEM to study of work-material deformation in friction drilling.

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Finite Element Modeling of the Broaching Process of Inconel718

Materials Science Forum ◽

10.4028/www.scientific.net/msf.697-698.39 ◽

2011 ◽

Vol 697-698 ◽

pp. 39-43 ◽

Cited By ~ 5

Author(s):

Y. L. Zhang ◽

Wu Yi Chen

Keyword(s):

Finite Element ◽

Finite Element Modeling ◽

Cutting Forces ◽

Cutting Parameters ◽

Rake Angle ◽

Area Ratio ◽

Chip Area ◽

Element Modeling ◽

Software Models ◽

On Chip

2D finite element modeling of the broaching process of Inconel718 was conducted by using the commercial software. Models between cutting forces and cutting parameters were obtained. In addition, a general understanding of the effects of two machining variables rake angle and rising per tooth on chip curling process and gullet-to-chip area ratio, was also obtained.

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