Seiichi Nomura

8170846, May 1, 2012

Apr 14, 2009

12/423196

Nobuo Suzuki - Kanagawa, JP
Kazuyuki Kabe - Kanagawa, JP
Seiichi Nomura - Arlington TX, US

The Yokohama Rubber Co., Ltd. - Tokyo

G06F 17/50

703 2, 703 5, 703 7, 703 14

In a method of computing the overall material constant of a composite material, a virtual composite material is defined as the one that a first material component is dispersed in a form of inner spherical particles in a matrix phase and each of the inner spherical particles is enveloped by the second material component, in a form of outer shell layers, as a coating layer. Based on this, a nonlinear equation is prepared, which has the material constant of the virtual composite material as an unknown. Next, the material constant of the virtual composite material is computed by solving the equation. In the equation, the material constant in each of the surrounding areas of the outer shell layers coating the inner spherical particles is defined as the overall material constant of the virtual composite material to be computed. The volume fractions of the material components in the composite material are computed using the equation.

8380776, Feb 19, 2013

Mar 2, 2009

12/396199

Nobuo Suzuki - Kanagawa, JP
Kazuyuki Kabe - Kanagawa, JP
Seiichi Nomura - Arlington TX, US

The Yokohama Rubber Co., Ltd. - Tokyo

G06F 7/38
G06F 7/60
G01N 31/00
G01L 1/00
G06G 7/56
G06G 7/58

708446, 708490, 702 22, 702 27, 702 42, 703 2, 703 5, 703 12

The overall material constant of a composite material is computed where the composite material includes multiple kinds of material components in a matrix phase, each of the material constants of the material components and the matrix phase being known. First, for the composite material, an equation, having the material constant of a virtual composite material as an unknown, is prepared by defining the virtual composite material in which each of the material components is dispersed in a form of spherical particles in the matrix phase at a known volume fractions. Next, the overall material constant of the virtual composite material is found as the overall material constant of the composite material by solving the equation. In this case, the equation is a recursive equation which is obtained using the self-consistent method. The volume fraction of a material component in the composite material is computed using the equation.

20100223017, Sep 2, 2010

Mar 2, 2009

12/396097

Nobuo SUZUKI - Kanagawa, JP
Kazuyuki KABE - Kanagawa, JP
Seiichi NOMURA - Arlington TX, US

THE YOKOHAMA RUBBER CO., LTD. - Tokyo

G01N 3/00
G06F 19/00

702 42

In computing the overall material constant of a composite material, a virtual composite material is defined as the one that predetermined material components are dispersed in a form of spherical particles in a matrix phase at known volume fractions, and a nonlinear equation having the overall material constant of the virtual composite material as an unknown is prepared. Next, the overall material constant of the composite material is computed by solving the nonlinear equation. The nonlinear equation is a recursive nonlinear equation which is obtained by defining the material constant in the surrounding areas of the spherical particles as the overall material constant of the composite material to be computed. The volume fraction of a material component dispersed in the composite material is computed using the recursive nonlinear equation.