Abstract: A meshing device which first divides a geometric model into a plurality of regions that can be easily meshed, and then performs meshing on a region-by-region basis. More specifically, the meshing device is a device for generating an analysis mesh model by meshing a geometric model created by a three-dimensional CAD, and includes: a hole extraction unit for extracting a hole formed in the geometric model; a region dividing unit for dividing the geometric model into a plurality of regions by utilizing the hole; and a region-by-region meshing unit for meshing the geometric model on a region-by-region basis. The meshing device is intended to reduce the number of man hours needed for meshing a large and complex geometric model.

Abstract: According to an aspect of an embodiment, a method comprises a screw fastening unit extracting step of extracting a screw fastening unit, in which at least two or more members are fastened by a screw, from a three-dimensional model, a shape changing step of changing each of circular arc surfaces of the screw, a screw through hole, and a screw hole disposed in the screw fastening unit to a polygonal polyhedron approximating the circular arc surface, a mesh creation step of creating an analysis model which is divided into a meshed analysis unit by allocation of polyhedral meshes along each of the edge surfaces of the screw, screw through hole, and screw hole which is changed to polyhedrons, and a contact definition step of setting the friction of a contact unit of the mesh-divided screw and screw hole to be infinite so as to achieve a fixed state.

Abstract: In order to efficiently generate mesh data to be used for application of structural analysis to an object formed by uniting a plurality of elements in which data elements are automatically connected without manual operation, an apparatus for generating mesh data includes an edge extracting section for extracting, on the basis of the three-dimensional design data, a pair of edges corresponding to a connection at which two elements are connected to each other when the object is formed; a mesh data generating section for generating, on the basis of the three-dimensional design data, mesh data concerning each of the plural elements; a node extracting section for extracting nodes corresponding one to each of the pair of edges extracted by the edge extracting section from the mesh data; and a node connecting section for connecting the nodes of the pair of edges to each other.

Abstract: A screw fastened position can be correctly defined in n analytical model generating method. It is determined whether or not a screw fastened portion exists in 3-dimensional design data. When the screw fastened portion exists, a hole of a member matching in the shape of a fixture (screw, bolt, rivet, etc.), the screw fastened position, and the screw shape is extracted. Then, a surface including the hole of the member is extracted, and the screw top shape is projected on the surface to generate attached surface data. The distance between the surfaces of the two members is calculated. When the distance is equal to or less than a predetermined value, attached surface data is defined as a screw fastened position on the two surfaces.

Abstract: According to an aspect of an embodiment, a method comprises a screw fastening unit extracting step of extracting a screw fastening unit, in which at least two or more members are fastened by a screw, from a three-dimensional model, a shape changing step of changing each of circular arc surfaces of the screw, a screw through hole, and a screw hole disposed in the screw fastening unit to a polygonal polyhedron approximating the circular arc surface, a mesh creation step of creating an analysis model which is divided into a meshed analysis unit by allocation of polyhedral meshes along each of the edge surfaces of the screw, screw through hole, and screw hole which is changed to polyhedrons, and a contact definition step of setting the friction of a contact unit of the mesh-divided screw and screw hole to be infinite so as to achieve a fixed state.

Abstract: A meshing device which first divides a geometric model into a plurality of regions that can be easily meshed, and then performs meshing on a region-by-region basis. More specifically, the meshing device is a device for generating an analysis mesh model by meshing a geometric model created by a three-dimensional CAD, and includes: a hole extraction unit for extracting a hole formed in the geometric model; a region dividing unit for dividing the geometric model into a plurality of regions by utilizing the hole; and a region-by-region meshing unit for meshing the geometric model on a region-by-region basis. The meshing device is intended to reduce the number of man hours needed for meshing a large and complex geometric model.

Abstract: A clamp ring that clamps a disc onto a spindle motor that rotates the disc includes an annular disc shaped body fixed onto a hub that rotates with a shaft of the spindle motor, the body arranging plural screw holes in a circumferential direction of the body, a screw that fixes the body onto the hub being inserted into each screw hole, wherein the body arranges plural stress relaxation holes between the plural screw holes so that each stress relaxation hole and each screw hole alternate in the circumferential direction of the body, each stress relaxation hole mitigating a deformation of the body in fixing the body onto the hub with the screw, a diameter of the stress relaxation hole being equal to or greater than a diameter of the screw hole in a surface of the body from which the screw is inserted into the body.

Abstract: In order to efficiently generate mesh data to be used for application of structural analysis to an object formed by uniting a plurality of elements in which data elements are automatically connected without manual operation, an apparatus for generating mesh data includes an edge extracting section for extracting, on the basis of the three-dimensional design data, a pair of edges corresponding to a connection at which two elements are connected to each other when the object is formed; a mesh data generating section for generating, on the basis of the three-dimensional design data, mesh data concerning each of the plural elements; a node extracting section for extracting nodes corresponding one to each of the pair of edges extracted by the edge extracting section from the mesh data; and a node connecting section for connecting the nodes of the pair of edges to each other.

Abstract: When an impact acts on a shock absorbing apparatus from the side of a first slide member, the reaction of the impact drives an internal unit toward the first slide member. The elastic deformation is induced in the first elastic member. The elastic deformation of the first elastic member causes the first slide member to slide on the wall surface of the receiving space. The displacement of the first slide member is transmitted to the second slide member through the coupling member. The second slide member is caused to move along the wall surface of the receiving space. The displacement of the second slide member induces elastic deformation of the second elastic member. The entire shock absorbing apparatus serves to consume the kinetic energy of the impact. Only a reduced impact reaches the internal unit.