System and method of direct mesh manipulation
First Claim
1. A system for direct mesh manipulation of a mesh model comprising:
- a computer system, wherein said computer system includes a memory, a processor, a user input device and a display device;
a computer generated geometric model stored in said memory of said computer system, wherein said model is in a computer-aided design (CAD) format; and
a user using the computer system to convert the CAD model into a mesh model, evaluate the mesh model using a computer-aided engineering (CAE) analysis, modify a predetermined design criteria, and update the mesh model by direct mesh manipulation using Dirichlet parameter distribution to determine deformation of a surface of the mesh model, so that the updated mesh model is available for further study.
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Abstract
A system and method for computer-aided engineering analysis using direct mesh manipulation of a mesh model is provided. The system includes a computer system having a memory, a processor, a user input device and a display device. The method includes the steps of selecting a geometric model in a computer-aided design (CAD) format, converting the CAD model into a mesh model and evaluating the mesh model using a computer-aided engineering (CAE) analysis. The method also includes the steps of modifying a surface of the mesh model by varying a predetermined parameter using direct surface manipulation (DSM), updating the mesh model and using the updated mesh model in further CAE analysis. Three techniques are provided for modifying a surface feature, including using a Dirichlet parameter distribution to determine the displacement of the surface feature; modeling the surface feature as an elastic sheet to determine deformation; and enclosing the feature within a lattice structure and using lattice deformation to determine surface deformation.
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Citations
15 Claims
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1. A system for direct mesh manipulation of a mesh model comprising:
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a computer system, wherein said computer system includes a memory, a processor, a user input device and a display device;
a computer generated geometric model stored in said memory of said computer system, wherein said model is in a computer-aided design (CAD) format; and
a user using the computer system to convert the CAD model into a mesh model, evaluate the mesh model using a computer-aided engineering (CAE) analysis, modify a predetermined design criteria, and update the mesh model by direct mesh manipulation using Dirichlet parameter distribution to determine deformation of a surface of the mesh model, so that the updated mesh model is available for further study. - View Dependent Claims (2, 3, 4, 6, 7, 8)
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5. A method of direct mesh manipulation of a mesh model, said method comprising the steps of:
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selecting a geometric model, wherein the model is in a computer-aided design (CAD) format;
converting the CAD model into a mesh model;
evaluating the mesh model using a computer-aided engineering (CAE) analysis;
determining whether to vary a design criterion;
modifying the predetermined design criterion, if determined to vary a design criterion;
updating the mesh model to include the modified design criterion using direct mesh manipulation (DMM) of the mesh model, wherein a surface of the mesh model affected by the modified design criterion is described using a Dirichlet parameter distribution to determine a displacement of the surface;
modifying the feature surface of the mesh model by the displacement; and
using the updated mesh model.
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9. A method of direct mesh manipulation of a mesh model, said method comprising the steps of:
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selecting a geometric model, wherein the model is in a computer-aided design (CAD) format;
converting the CAD model into a mesh model;
evaluating the mesh model using a computer-aided engineering (CAE) analysis;
determining whether to vary a predetermined design criterion;
modifying the predetermined design criterion, if determined to vary the design criterion;
updating the mesh model to include the modified design criterion using direct surface manipulation (DMM) of the mesh model, wherein a surface of the mesh model is described as an elastic sheet and linear elastic finite element analysis is applied to determine displacement of the surface;
modifying the surface of the mesh model by the displacement; and
using the updated mesh model. - View Dependent Claims (10, 11)
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12. A method of direct mesh manipulation of a mesh model, said method comprising the steps of:
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selecting a geometric model, wherein the model is in a computer-aided design (CAD) format;
converting the CAD model into a mesh model;
evaluating the mesh model using a computer-aided engineering (CAE) analysis;
determining whether to vary a predetermined design criterion;
modifying the predetermined design criterion, if determined to vary the design criterion;
updating the mesh model to include the modified design criterion using direct surface manipulation (DSM) of the mesh model, wherein a surface of the mesh model is embedded within a lattice structure having a volume, a point within the volume is modified, and finite element analysis is applied to determine displacement of each node within the lattice, modifying the surface of the mesh model by the displacement; and
using the updated mesh model. - View Dependent Claims (13, 14, 15)
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Specification