Shape Modeling by Form Features Óbuda University John von Neumann Faculty of Informatics Institute of Applied Mathematics Master in Mechatronics Course CAD Systems Laboratory No. 3 Shape Modeling by Form Features László Horváth http://users.nik.uni-obuda.hu/lhorvath/
László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/ This presentation is intellectual property. It is available only for students in my courses. The screen shots in tis presentation was made in the CATIA V5 és V6 PLM systems the Laboratory of Intelligent Engineering systems, in real modeling process. The CATIA V5 és V6 PLM systems operate in the above laboratory by the help of Dassult Systémes Inc. and CAD-Terv Ltd. László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Program of the course 1. Systems for lifecycle management of product information 2. Functionality of engineering modeling systems. Objects in model space. Structure of engineering configuration 3. Shape Modeling by Form Features 4. Shape centric representation. Unified representation of geometry (NURBS) and topology. 5. Definition features for printed circuit board (PCB) 6. Analysis on the principle of finite elements (FEM/FEA) 7. Representation of mechanical systems 8. Representation of intents, experiences, and knowledge 9. Connections of virtual space with the physical world 10. Collaboration of engineers in PLM system 11. Representation of engineering configuration in RFLP structure 12. Management of models in PLM systems 13. Model data exchange between different models. ISO 13303. László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/ Tartalom Contents Important initial notices Form features and their groups for solid model Parameters of form features and their relationships Generation of dress-up features for conditioning Model definition for solid body using sequence of shape modification form features - Exercise CS 4.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Important initial notices Generic model is defined which is capable for self modification along contextual chains in the context of outside control parameters. During model definition, seeing and thinking in information structure is inevitable. Shape modeling is only one of the examples for the application of the feature principle. Current advanced modeling applies this principle at representation of all of the engineering objects We solve laboratory task in contextual industrial modeling system using a very restricted choice of functions. Do not use unnecessary modeling function because modeling system handles it a context. László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form feature Application feature: Guide Attributes: width length height surface roughness, etc. Form feature: Protrusion Representation of form feature: Solid body boundary representation KEMR – kill edge make ring (closed chain of edges)! Definition of tabulated solid form feature on place Opening of face and placing new closed chain of edges. The modified shape Euler operator László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Groups of form features for solid model 1. Defined by shape, volume adding and subtracting Cube, cylinder, sphere, cone and torus. 2. Sketch-Based Features, volume adding and subtracting Tabulated (extruded), rotational, pyramid, tube, swept, multi-sections, and rib. 3. Boolean operations: add, remove, and intersect bodies Joining two bodies into a single new body, 4. Surface based features. Individually created surface modifies solid shape. 5. Dress-up features for conditioning Fillet, chamfer, draft, shell, thread, and tap. László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Generation of dress-up features for conditioning Fillet results new surface(s). Arch section is constraint Generation of solid shell after removing topological face(s) between boundary and its ofset(s). Fixed Radius Variable Radius Coordinated Radius Definition of neutral edge for draft form feature E n1 p p E n F E n d F d pl E n2 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 Model definition for solid body using sequence of shape modification form features László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 What can be seen in this viewport snapshot? László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 Thematic elements of exercise Parameters of form features and their relationships Definition of surface by moving a generator curve along path curve under the control of spine curve Transferring shape of a surface into boundary Definition of surface by curves defined in the boundary Solid form feature in contextual pattern Variable radius cubic fillet surface Face in boundary topology as reference Volume subtracting form feature Mirroring of boundary represented solid body László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
CS00Sxxxx00 Form features – Exercise CS 3.1 Model name in the PLM model base (for propagation): CS00Sxxxx00 Course name Year 16 SemesterS or F Student name Exercise No.:31 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 Parameters of form features and their relationships László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 Definition of surface by moving a generator curve along path curve under the control of spine curve László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 Transferring shape of a surface into boundary László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 Definition of surface by curves defined in the boundary László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 Solid form feature in contextual pattern László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 Variable radius cubic fillet surface László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 Face in boundary topology as reference László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 Volume subtracting form feature László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 Mirroring of boundary represented solid body László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/
Form features – Exercise CS 3.1 László Horváth UÓ-JNFI-IAM http://users.nik.uni-obuda.hu/lhorvath/