The Experts below are selected from a list of 5100 Experts worldwide ranked by ideXlab platform

Susumu Shima - One of the best experts on this subject based on the ideXlab platform.

  • cosserat continuum theory to simulate microscopic rotation of magnetic Powder in applied magnetic field
    International Journal of Mechanical Sciences, 2000
    Co-Authors: Hidetoshi Kotera, Muneo Sawada, Susumu Shima
    Abstract:

    Numerical method based on the Cosserat continuum theory is proposed for simulating behavior of a magnetic Powder in an applied magnetic field. The Maxwell stress is induced in the magnetic Powder. During Powder Forming Process in the magnetic field, the magnetic particles are thus rotated and transferred by both mechanical and magnetic interaction. To simulate such Powder behavior, we formulate a finite element equation considering Maxwell stress based on the Cosserat continuum theory of compressible plasticity. The Powder behavior with magnetic alignment during compaction in magnetic field is simulated by the proposed method and the effect of couple-stress on the Powder behavior is discussed.

  • magnetic cosserat continuum theory to simulate behavior of magnetic Powder during compaction in applied magnetic field
    Metals and Materials, 1998
    Co-Authors: Hidetoshi Kotera, Muneo Sawada, Susumu Shima
    Abstract:

    Numerical method based on the Cosserat continuum theory is proposed for simulating behavior of a magnetic Powder in an applied magnetic field. The Maxwell stress is induced in the magnetic Powder. During Powder Forming Process in the magnetic field, the magnetic particles are thus rotated and transferred by both mechanical and magnetic interaction. To simulate such Powder behavior, we formulate a finite element equation considering Maxwell stress based on the Cosserat continuum theory of compressible plasticity. The Powder behavior with magnetic alignment during compaction in magnetic field is simulated by the proposed method and the effect of couple-stress on the Powder behaviour is discussed.

Hidetoshi Kotera - One of the best experts on this subject based on the ideXlab platform.

  • cosserat continuum theory to simulate microscopic rotation of magnetic Powder in applied magnetic field
    International Journal of Mechanical Sciences, 2000
    Co-Authors: Hidetoshi Kotera, Muneo Sawada, Susumu Shima
    Abstract:

    Numerical method based on the Cosserat continuum theory is proposed for simulating behavior of a magnetic Powder in an applied magnetic field. The Maxwell stress is induced in the magnetic Powder. During Powder Forming Process in the magnetic field, the magnetic particles are thus rotated and transferred by both mechanical and magnetic interaction. To simulate such Powder behavior, we formulate a finite element equation considering Maxwell stress based on the Cosserat continuum theory of compressible plasticity. The Powder behavior with magnetic alignment during compaction in magnetic field is simulated by the proposed method and the effect of couple-stress on the Powder behavior is discussed.

  • magnetic cosserat continuum theory to simulate behavior of magnetic Powder during compaction in applied magnetic field
    Metals and Materials, 1998
    Co-Authors: Hidetoshi Kotera, Muneo Sawada, Susumu Shima
    Abstract:

    Numerical method based on the Cosserat continuum theory is proposed for simulating behavior of a magnetic Powder in an applied magnetic field. The Maxwell stress is induced in the magnetic Powder. During Powder Forming Process in the magnetic field, the magnetic particles are thus rotated and transferred by both mechanical and magnetic interaction. To simulate such Powder behavior, we formulate a finite element equation considering Maxwell stress based on the Cosserat continuum theory of compressible plasticity. The Powder behavior with magnetic alignment during compaction in magnetic field is simulated by the proposed method and the effect of couple-stress on the Powder behaviour is discussed.

Muneo Sawada - One of the best experts on this subject based on the ideXlab platform.

  • cosserat continuum theory to simulate microscopic rotation of magnetic Powder in applied magnetic field
    International Journal of Mechanical Sciences, 2000
    Co-Authors: Hidetoshi Kotera, Muneo Sawada, Susumu Shima
    Abstract:

    Numerical method based on the Cosserat continuum theory is proposed for simulating behavior of a magnetic Powder in an applied magnetic field. The Maxwell stress is induced in the magnetic Powder. During Powder Forming Process in the magnetic field, the magnetic particles are thus rotated and transferred by both mechanical and magnetic interaction. To simulate such Powder behavior, we formulate a finite element equation considering Maxwell stress based on the Cosserat continuum theory of compressible plasticity. The Powder behavior with magnetic alignment during compaction in magnetic field is simulated by the proposed method and the effect of couple-stress on the Powder behavior is discussed.

  • magnetic cosserat continuum theory to simulate behavior of magnetic Powder during compaction in applied magnetic field
    Metals and Materials, 1998
    Co-Authors: Hidetoshi Kotera, Muneo Sawada, Susumu Shima
    Abstract:

    Numerical method based on the Cosserat continuum theory is proposed for simulating behavior of a magnetic Powder in an applied magnetic field. The Maxwell stress is induced in the magnetic Powder. During Powder Forming Process in the magnetic field, the magnetic particles are thus rotated and transferred by both mechanical and magnetic interaction. To simulate such Powder behavior, we formulate a finite element equation considering Maxwell stress based on the Cosserat continuum theory of compressible plasticity. The Powder behavior with magnetic alignment during compaction in magnetic field is simulated by the proposed method and the effect of couple-stress on the Powder behaviour is discussed.

A R Azami - One of the best experts on this subject based on the ideXlab platform.

  • Reproducing Kernel Particle Method in Plasticity of Pressure-Sensitive Material with Reference to Powder Forming Process
    Computational Mechanics, 2007
    Co-Authors: Amir R. Khoei, Mansooreh Samimi, A R Azami
    Abstract:

    In this paper, an application of the reproducing kernel particle method (RKPM) is presented in plasticity behavior of pressure-sensitive material. The RKPM technique is implemented in large deformation analysis of Powder compaction Process. The RKPM shape function and its derivatives are constructed by imposing the consistency conditions. The essential boundary conditions are enforced by the use of the penalty approach. The support of the RKPM shape function covers the same set of particles during Powder compaction, hence no instability is encountered in the large deformation computation. A double-surface plasticity model is developed in numerical simulation of pressure-sensitive material. The plasticity model includes a failure surface and an elliptical cap, which closes the open space between the failure surface and hydrostatic axis. The moving cap expands in the stress space according to a specified hardening rule. The cap model is presented within the framework of large deformation RKPM analysis in order to predict the non-uniform relative density distribution during Powder die pressing. Numerical computations are performed to demonstrate the applicability of the algorithm in modeling of Powder Forming Processes and the results are compared to those obtained from finite element simulation to demonstrate the accuracy of the proposed model.

T Ramesh - One of the best experts on this subject based on the ideXlab platform.

  • shrinkage characteristics studies on conventional sintered zirconia toughened alumina using computed tomography imaging technique
    International Journal of Refractory Metals & Hard Materials, 2016
    Co-Authors: Renold S Else, T Ramesh
    Abstract:

    Abstract Shrinkage is an important issue during sintering of ceramics as it affects the structural and mechanical properties. In the current work, the shrinkage characteristics of sintered zirconia toughened alumina (ZTA) compact produced by conventional Powder Forming Process was investigated by using computed tomography imaging technique. The effect of Process parameters such as weight percentage of zirconia added to toughened alumina, compaction pressure, and sintering temperature on ZTA was studied. The Box–Behnken technique in response surface methodology was used to develop the experimental design to analyze the shrinkage phenomena. The sintered samples were subjected to computed tomography scan and analyzed by using MIMICS Software wherein the three dimensional shrinkage of the ZTA composites was done. The mathematical regression model relating Powder Forming Process parameters to the shrinkage was developed. It was observed that due to the effect of gravity, shrinkage is found to be 20% in the top for 1600 °C sintered sample. From the study shrinkage of the sintered ZTA was influenced by the sintering temperature. Being a non-contact type digital measurement method the odds of error created by instrument or human was avoided. Shrinkage of three directional complex shapes can also be identified effectively with the help of solid modeling packages.

  • optimization of Process parameters of zirconia reinforced alumina by Powder Forming Process using response surface method
    Advanced Materials Research, 2014
    Co-Authors: Renold S Elsen, T Ramesh, B Aravinth
    Abstract:

    Powder Forming Process is used for fabrication of bulk ceramic components. Optimization of Powder Forming Process parameters in the fabrication of alumina-zirconia composite used in orthopedic implants is done for desired physical property. In this research work, Process parameters such as composition of zirconia, compaction pressure and sintering temperature were analyzed using Response Surface Method (RSM). The physical properties such as density, porosity and water absorption characteristics of the proposed composite were studied. To study the influence of the different Process parameters over the physical properties of the fabricated composites materials, experimental runs were framed by using Box behnken method. Three factors and two levels were selected with a total of 17 runs and their consecutive tests were carried out. The validity of the model was checked and the significant parameters were identified using Analysis of variance (ANOVA). The results indicate that the sintering temperature is influencing predominantly the physical properties of composites compared to other Process parameters.