Method and apparatus generating analysis mesh data, and computer product

• US 20030085892A1
• Filed: 11/06/2002
• Published: 05/08/2003
• Est. Priority Date: 11/07/2001
• Status: Active Grant

• Current Assignee: Furukawa Electric Company Limited
• Original Assignee: Furukawa Electric Company Limited
• Inventors: Mashimo, Keiji
• Granted Patent: US 6,940,506 B2
• Time in Patent Office: Days
• US Class Current: 345/420
• CPC Class Codes: G06F 30/23 using finite element methods [FEM] or finite difference methods [FDM]
• CPC Class Codes: Y10S 345/953 Geometric processing
• CPC Class Codes: Y10S 715/964 CAD or CAM, e.g. interactive design tools
• CPC Class Codes: Y10S 715/965 for process control and configuration

Abstract

A shape characteristic extractor decomposes and extracts typical shapes where element division is easy from shape data that indicates the shape of an object. An analysis mesh data generator generates analysis mesh data (element dividing information) for each of the decomposed and extracted shapes. Thus, the element dividing information can be generated even if the object has a complicated shape. Moreover, the element dividing information can be generated accurately and speedily.

Claims

1. An analysis mesh data generating apparatus that generates analysis mesh data required for element division in a numerical analysis, analysis mesh data including at least shape data that indicates the shape of an object, the apparatus comprising:

a shape characteristic extracting unit that extracts data representing predetermined characteristics shape from the shape data of the object; and

an analysis mesh data generating unit that specifies different pieces of structure information according to shapes represented by the data extracted by the shape characteristic extracting unit, and combines the specified pieces of structure information so as to generate the analysis mesh data.

2. The analysis mesh data generating apparatus according to claim 1, wherein when the shapes represented by the data extracted by the shape characteristic extracting unit are included as a single type of shapes or plural different types of shapes in the shape data of the object, the analysis mesh data generating unit allows a number of repetition of the single type of shapes or the different types of shapes to be included in the analysis mesh data.

3. An analysis mesh data generating method of generating analysis mesh data required for element division in a numerical analysis, analysis mesh data including at least shape data that indicates the shape of an object, the method comprising:

extracting data representing predetermined characteristic shapes from the shape data of the object; and

specifying different pieces of structure information according to the shapes represented by the data extracted at the extracting step, and combining the specified pieces of structure information so as to generate the analysis mesh data.

4. The analysis mesh data generating method according to claim 3, wherein when the shapes represented by the data extracted at the extracting step are included as a single type of shapes or different types of shapes in the shape data of the object to be analyzed, the analysis mesh data generating step allows a number of repetition of the single type of shapes or different types of shapes to be included in the analysis mesh data.

5. A computer program for generating analysis mesh data required for element division in a numerical analysis, analysis mesh data including at least shape data that indicates the shape of an object makes a computer execute:

extracting data representing predetermined characteristic shapes from the shape data of the object; and

specifying different pieces of structure information according to the shapes represented by the data extracted at the extracting step, and combining the specified pieces of structure information so as to generate the analysis mesh data.

6. The program according to claim 5, wherein when the shapes represented by the data extracted at the extracting step are included as a single type of shapes or different types of shapes in the shape data of the object to be analyzed, the analysis mesh data generating step allows a number of repetition of the single type of shapes or the different types of shapes to be included in the analysis mesh data.