Abstract: A structural analysis program which enables easy structural analysis in accordance with a finite element method based on data representing a two-dimensional shape. A two-dimensional model of a structure is produced in response to a manipulation input which designates a material arrangement pattern and a thickness of each layer of the structure. A three-dimensional model is produced by adding the designated thickness of each layer to the material arrangement pattern of the layer so as to make the material arrangement pattern three-dimensional and stacking the three-dimensionalized material arrangement pattern of each layer. A finite element model is produced by dividing the three-dimensional model into a plurality of voxels. The computer performs structural analysis based on the produced finite element model. Thereby, an analysis result of a multilayer structure defined by the two-dimensional model is obtained.

Abstract: In a three-dimensional model analyzing apparatus for analyzing a physical property of a three-dimensional model, an information receiving unit receives information on a three-dimensional model as an object to be analyzed, an edge detecting unit detects an edge of the three-dimensional model, a smoothing unit smoothes the edge, and an analyzing unit analyzes the three-dimensional model in accordance with the finite element method after the edge is smoothed by the smoothing unit.

Abstract: A VOXEL model generating unit generates a VOXEL model of an analysis object, and an inertia principal axes computing unit computes a center of gravity and principal axes of inertia. A three-dimensional CAD data rotating unit rotates the VOXEL model around one axis of the principal axes of inertia to generate the rotated VOXEL models, thereby finding the VOXEL model with the least volume error between an actual volume Vc of an analysis object calculated for a three-dimensional CAD model and a volume Vv of the VOXEL model. The coordinate system of the VOXEL model at this time is defined for VOXEL coordinates.

Abstract: In a structure analysis problem for applying a pressure to a curved surface of a structure, the pressure is applied to an area approximated by a VOXEL method, so that the pressure acts on an area different from an area to which the pressure is to be intrinsically applied. In the present invention, to absorb an error of this area, the pressure to be applied is corrected in accordance with the error of the area. Also, the pressure to be applied is recorrected for an error between a correct reaction force A to a load and a total of reaction forces B at points of fulcrum calculated in a structure analysis computation and the structure analysis is performed again. If the error is within a range of tolerance, a stress and a displacement calculated by the structure analysis computation are made a last analysis result.

Abstract: A three-dimensional model analyzing apparatus for optimally segmenting a three-dimensional model to be analyzed. Input unit inputs a three-dimensional model to be analyzed, and rotated model generating unit causes the three-dimensional model input from the input unit to rotate successively by a predetermined angle in a three-dimensional space, to generate a plurality of rotated models derived at different angles. Segmenting unit segments each of the rotated models into a plurality of polyhedrons having an identical shape, and comparing unit compares the surface area or volume of each rotated model segmented by the segmenting unit with the surface area or volume of the original three-dimensional model. Presenting unit presents an optimum rotated model in accordance with the results of comparison by the comparing unit.

Abstract: A structural analysis program which enables easy structural analysis in accordance with a finite element method based on data representing a two-dimensional shape. A two-dimensional model of a structure is produced in response to a manipulation input which designates a material arrangement pattern and a thickness of each layer of the structure. A three-dimensional model is produced by adding the designated thickness of each layer to the material arrangement pattern of the layer so as to make the material arrangement pattern three-dimensional and stacking the three-dimensionalized material arrangement pattern of each layer. A finite element model is produced by dividing the three-dimensional model into a plurality of voxels. The computer performs structural analysis based on the produced finite element model. Thereby, an analysis result of a multilayer structure defined by the two-dimensional model is obtained.

Abstract: In a structure analysis problem for applying a pressure to a curved surface of a structure, the pressure is applied to an area approximated by a VOXEL method, so that the pressure acts on an area different from an area to which the pressure is to be intrinsically applied. In the present invention, to absorb an error of this area, the pressure to be applied is corrected in accordance with the error of the area. Also, the pressure to be applied is recorrected for an error between a correct reaction force A to a load and a total of reaction forces B at points of fulcrum calculated in a structure analysis computation and the structure analysis is performed again. If the error is within a range of tolerance, a stress and a displacement calculated by the structure analysis computation are made a last analysis result.

Abstract: A VOXEL model generating unit generates a VOXEL model of an analysis object, and an inertia principal axes computing unit computes a center of gravity and principal axes of inertia. A three-dimensional CAD data rotating unit rotates the VOXEL model around one axis of the principal axes of inertia to generate the rotated VOXEL models, thereby finding the VOXEL model with the least volume error between an actual volume Vc of an analysis object calculated for a three-dimensional CAD model and a volume Vv of the VOXEL model. The coordinate system of the VOXEL model at this time is defined for VOXEL coordinates.