Method of generating finite elements using the symmetric axis transform
Patent 4797842 Issued on January 10, 1989. Estimated Expiration Date: 
September 16, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 16, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3805028 Apparatus for analysis of network diagrams Apparatus for evaluating characteristics of the images of objects System for extracting shape features from an image Topological transformation system Device for displaying feature of contour image Object solid figure recognizing method and apparatus Patent #: 4404684 InventorsApplicationNo. 07/097382 filed on 09/16/1987US Classes:716/20, Mesh generation345/420, Solid modelling702/33, Mechanical measurement system703/2MODELING BY MATHEMATICAL EXPRESSIONExaminersPrimary: Gruber, Felix D.Attorney, Agent or FirmInternational ClassesG06F 17/50 (20060101)G06T 17/20 (20060101) AbstractA method, amenable to automation, for generating finite elements of a geometric model. The model is first subdivided into coarse subdomains and then the coarse subdomains are further subdivided. The coarse subdivision is performed using a symmetric axis transform which generates axes symmetric to opposing boundaries of the object. The transform also generates a radius function of the axes giving the distance between the axes and the boundaries. A coarse subdomain is created between each single non-branching section of the axes and one of its associated boundaries. The fine subdivisions of the relatively simple coarse subdomains is performed by well known techniques or can beneficially use the radius function. | |
