Fujitsu Corporation

Tetsuyuki Kubota

Peter Chow

Serban Georgescu

Makoto Sakairi

Akihiko Fujisaki

Nobutaka Itoh

Mami Nakadate

Sachiko Furuya

Takamasa Shinde

Kazuhisa Inagaki

Akira Sakai

Akira Ueda

Kenji Nagase

Akira Tamura

Hidehisa Sakai

Nobuyoshi Yamaoka

Takefumi Namiki

Hideharu Matsushita

Yasuhiko Takahashi

Shigeo Ishikawa

Kouji Demizu

Yasuhiro Ite

Atsushi Furuya

Tomoko Kutsuzawa

Sekiji Nishino

Akihiro Otsuka

Yoshihiro Amemiya

Brent Walker

Muhammad Abdurrahman

Takashi Yamagajou

A temperature calculation method for a substrate, the temperature calculation method includes: calculating, by a computer performing a circuit simulation based on a resistance equivalent to a component that joins two substrates included in a target model of an analysis, a value of a current that flows through the component or voltage values in respective end portions of the component; setting, based on model information for expressing the target model, the current value or the voltage values in a first surface and a second surface that are included in surfaces of an outer shape of the component and that are in contact with the respective substrates; and calculating a first current density distribution of the component by performing a first electrical analysis according to the setting.

Temperature calculation method, information processing device, and non-transitory recording medium storing temperature calculation program

A method of translating a Computer Aided Design CAD model of a product constructed for Computer Aided Engineering CAE analysis into a flexible form, the method comprising: converting the original CAD model into a different format to provide a new-format CAD model; providing visualization data including: an assembly tree extracted from the original CAD model, the assembly tree including each component of the assembly forming the product; and visualization information from the original CAD model for each assembly face in the assembly tree; and providing geometry information including matching information unambiguously identifying each assembly face; wherein the geometry information allows the assembly faces to be matched with the CAD faces in the new-format CAD model.

Flexible CAD format

A method of Computational Fluid Dynamics CFD simulation for a product including a plurality of individual components, the method comprising creating a library of known components, including their component geometry and modeling properties needed for simulation, the components being individually meshed within the library; using a graphical user interface GUI to select and place a plurality of components from the library in a desired configuration to make up a CFD model of a product; and CFD simulating the model by scheduling a plurality of solvers, each solver modeling a component group comprising part or all of at least one component, to manage the time of action of the solvers and data exchange between the solvers.

Multi-component computational fluid dynamics simulations

A computer-implemented method of simplifying a geometrical model including through holes, by replacing perforations in the geometrical model, comprising: automatically identifying a potential group of perforations in a geometric model, and replacing the group of perforations with a porous replacement portion.

Computer-implemented method of identifying a group of perforations

A disclosed setting method includes: in response to an instruction to replace a first component with a second component, determining whether or not data that correlates a surface of the first component with a surface of a third component has been set; upon determining that the data that correlates the surface of the first component with the surface of the third component has been set, extracting a surface of the second component, which corresponds to the surface of the first component; and correlating the extracted surface of the second component with the surface of the third component instead of the surface of the first component in the data.

Setting method and information processing apparatus

A method, for use in meshing a CAD domain in a computer-aided design (CAD) or computer-aided engineering (CAE) system, comprises carrying out a procedure comprising: obtaining a set of mesh elements by extracting, from a previously-generated mesh of the CAD domain which has undergone a mesh element optimization process in respect of interior elements of the previously-generated mesh, mesh elements which do not satisfy a preselected mesh quality metric; decomposing the set of mesh elements into connected sub-meshes; carrying out a serial mesh element optimization process in respect of each sub-mesh independently and in parallel, under the condition that boundary nodes of sub-meshes are not moved, to obtain optimized sub-meshes; and obtaining an optimized mesh of the CAD domain by integrating the optimized sub-meshes into the previously-generated mesh.

Mesh quality improvement in computer aided engineering

A method of allowing inclusion of a structural component which is the confidential property of an owner in a third party remote product simulation, the method comprising, in owner modelling software: importing a component model including geometry of the component, mesh data and at least one material property of the component; encrypting a secure part of the component model which is to remain confidential to the owner using a software key, and leaving an interface part of the component model unencrypted; adding a restriction to the component model before the component model is exported, the restriction specifying simulation result data which is not to be visible to the third party; and exporting the partially encrypted component model to the third party for use in third party modelling software.

Methods and apparatus for including a confidential structural component in a third party remote product simulation

A board design aid device includes a calculating and correcting units. The calculating unit groups a plurality of layers in a multi-layer board into a plurality of pairs of layers based on design information of the multi-layer board, the plurality of layers being stacked and derives a difference of total amounts in respect to a board design element, each of the total amounts being related to each layer of a pair of layers of the plurality of pairs of layers, the board design element being related to a warp of the multi-layer board. The correcting units, based on the difference of the total amounts, corrects an amount of the board design element for at least one of layers among at least one of the plurality of the pairs of layers so that the difference of the total amounts of the board design element is maintained within a certain range.

Circuit board design and correction method determining a difference between groupings of layers

This method includes: obtaining a first component having a hole among a plurality of components included in a three-dimensional model; determining whether a second component that satisfies a first condition that the second component has a portion that exists within the hole of the first component or a second condition that the second component covers at least a part of an opening portion of the hole included in the first component exists among the plurality of components included in the three-dimensional model; and upon determining that the second component exists, storing data for identifying the hole of the first component into a data storage unit.

Three-dimensional model processing technique

An analysis apparatus includes an assignor assigning a physical property value corresponding to the kind of a material to each of regions formed by dividing a structural data representing a structure of a multilayer substrate, a determiner determining whether or not the each of the region belongs to a predetermined region in a layer of a predetermined kind, and a physical property value changer changing the physical property value of the region belonging to a predetermined region in a layer of a predetermined kind.

Analysis apparatus

A magnet unit for a magnetron sputtering system includes a base plate and a plurality of magnet parts each including a first magnet and a first supporting member. The first supporting member supports the first magnet and fixes the first magnet to the base plate. The magnet parts confine a plasma.

Magnet unit for magnetron sputtering system

A structural analysis method that saves analysis time without lowering the prediction accuracy is provided. The structural analysis method has dividing up the analysis target into a plurality of finite elements; defining a plurality of meshes that divide up the analysis target into units larger than the finite elements and calculating, for each mesh, the proportion of one material among the plurality of materials that occupy the finite element contained in the mesh; specifying a mesh in which the calculated proportion of the one material exceeds a predetermined threshold value and generating mesh data by substituting material information specifying materials other than the one material with material information of the materials of the finite elements contained in the specified mesh; and calculating the physical amount yielded in the analysis target on the basis of the generated mesh data.

Structural analysis method employing finite element method

A storage apparatus and a magnetic head driving device includes a recording/reproducing head including a write element and a magnetoresistive element, a driving circuit for driving the write element and the magnetoresistive element, and write wires and read wires which connect the recording/reproducing head to the driving circuit. The write wires and the read wires are disposed in parallel in at least a portion between the recording/reproducing head and the driving circuit. At a location between the recording/reproducing head and the driving circuit, either of the write wires and the read wires are disposed so that a polarity of the either of the write wires and the read wires is reversed with respect to a polarity of the other of the write wires and the read wires.

Electrical device for interconnecting magnetic head and driving circuit which uses adjusted length wires of opposite polarity to reduce crosstalk and storage apparatus including same

A merging unit merges partial models into an entire model, and divides a grid of a parent hierarchy into grids of a child hierarchy based on hierarchical relationship of partial models, and an object selecting unit divides a grid of an object inclusion domain that includes an object selected from the entire model by a user to create a sub grid domain, and a domain selecting unit divides a grid of a domain selected from the entire model by the user to create the sub grid domain.

Method and apparatus for analyzing electromagnetic wave, and computer product

According to the present invention an S-parameter file input section inputs S-parameters for each device constituting a system subject to a transmission analysis, a port position correspondence conversion section converts the input S-parameters so as to correspond to preset port positions to be connected, an S-parameter/T-parameter conversion section converts S-parameters to T-parameters, a connection calculation section carries out a connection calculation of T-parameters to obtain T-parameters of the entire system, a T-parameter/S-parameter conversion section converts T-parameters of the entire system to S-parameters of the entire system and an S-parameter file output section outputs S-parameters of the entire system.

Growing community of inventors

Kawasaki, Japan

Tetsuyuki Kubota