1. Virtual engineering An outline of basic methods in virtual space
Óbuda University
John von Neumann Faculty of Informatics
Institute of Applied Mathematics
Course Introduction to virtual engineering
Lecture and laboratory 1.
Virtual engineering
An outline of basic methods in virtual space
László Horváth

2. László Horváth UÓ-JNFI-IAM http://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 and 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

3. Contents László Horváth UÓ-JNFI-IAM http://nik.uni-obuda.hu/lhorvath/
Lecture
Role of virtual systems in engineering
Representation of physical world
Product model and its components
Area dependence of virtual spaces
Laboratory
Overlook an engineering virtual space (VE1.1)
Functionality a complex engineering system (VE1.2)
Contextual object definition (VE1.3)
Product structure and its application at model changes (VE1.4)
László Horváth UÓ-JNFI-IAM

4. Role of virtual systems in engineering
Physical world connections
(Digitized information, equipment control program, data from sensors, data for rapid prototyping)
Model space comprising representation of
elements,
relationships, and
interactions
of product to be produced and operated in an environment
Construction of product model
Simulations and analyses to answer the question:
How the product will behave in a given environment.
Virtual prototype development.
Human interactions
László Horváth UÓ-JNFI-IAM

5. Developng methodology for representation of physical world
Procedures
Control of procedures
Authorized, responsible humans
Product model
Drawing space
(Documentation)
Object space
(model)
Virtual space
(intelligent model)
It is based on processing of knowledge. Knowledge must be verified and accepted by company, project, product development, and individuals.
Physical world connections
(Digitized information, equipment control program, data from sensors, data for rapid prototyping)
László Horváth UÓ-JNFI-IAM

6. Representation of physical world – historical survey
Integrated engineering in the old times
(Manual)
Representation cyber – physical – biological system
Modeling multidisciplinary system
Model representations in RFLP structure
Engineering separated into areas
(Manual then computer aided)
Concurrent engineering in early integrated systems
(Computer aided …)
Product Lifecycle Management
Physical level representation in virtual space
László Horváth UÓ-JNFI-IAM

7. Representation of physical world
Definition in model space
Partial solutions
CAD/CAM/CAE, etc.
(70-90’s)
Product model
STEP ISO 10303
(80-90’s)
Form feature Boundary representation
(90’s)
Early achievements
Developing virtual technology
Full integration
Situation and event based
Contextual definition
Object model
Knowledge ware
Current virtual technology
Product model for PLM
Model space parameters
Requirement
Requirements the product has to fulfill
Function
To fulfill its requirements
Logical
Structure of logical components.
Physical
Representations of real world product.
Object structure
Object representations
Contextual connections
Active knowledge for situations and events
Abstraction levels in RFLP structure
László Horváth UÓ-JNFI-IAM

8. Definition in virtual space
Creating and analysis of curve and surface.
To be used in boundary of a solid shape.
Solid with boundary representation.
Structure of topological and geometrical entities.
László Horváth UÓ-JNFI-IAM

9. Definition in virtual space
Parts are not placed on each other
Two parts in the assembly space.
Parts are partially placed on each other by the Coincidence.1 constraint.
László Horváth UÓ-JNFI-IAM

10. Definition in virtual space
Definition of force on geometry
Finite element analysis.
Visualization of results in the form of color range code.
László Horváth UÓ-JNFI-IAM

11. Definition in virtual space
Curvature analysis
on surfaces of a solid.
Manikin
for ergonomic analysis.
László Horváth UÓ-JNFI-IAM

12. Overlook of virtual engineering space (VES)
Laboratory task VE1.1
Understanding virtual space and its characteristics.
Placing shape objects in a virtual space.
Understanding space and working plane.
Navigation by space pilot.
László Horváth UÓ-JNFI-IAM

13. Functionality of a complex engineering system
Laboratory task VE1.2
Groups of functions and their connection.
Concluding elements and human control of a virtual space.
László Horváth UÓ-JNFI-IAM

14. Contextual object definition
Laboratory task VE1.3
Model name in the PLM model base (for propagation):
IN00Sxxxx00
Course name
Year
SemesterS or F
Student identificator
Exercise No.
László Horváth UÓ-JNFI-IAM

15. Contextual object definition
Laboratory task VE1.3
Definition of a tabulated solid object in the context of a closed spline curve.
László Horváth UÓ-JNFI-IAM

16. Contextual object definition
Laboratory task VE1.3
László Horváth UÓ-JNFI-IAM

17. Contextual object definition
Laboratory task VE1.3
Application of the resulted tabulated solid as base feature.
Modifying it by shell and fillet form features.
Shell is based on solid between boundary and its offset while fillet is a new surface in the boundary
László Horváth UÓ-JNFI-IAM

18. Contextual object definition
Laboratory task VE1.3
László Horváth UÓ-JNFI-IAM

19. Contextual object definition
Laboratory task VE1.3
Modification of a control point of the closed spline curve and recognition of contextual chain.
László Horváth UÓ-JNFI-IAM

20. Contextual object definition
Laboratory task VE1.3
László Horváth UÓ-JNFI-IAM

21. Contextual object definition
Laboratory task VE1.3
On-site modification of the base feature by a new tabulated solid.
László Horváth UÓ-JNFI-IAM

22. Contextual object definition
Laboratory task VE1.3
László Horváth UÓ-JNFI-IAM

23. Product structure and its application at model changes
Laboratory task VE1.4
Study structure of the model constructed in laboratory task VE1.3.
Understand product structure and its levels.
Select contextual objects in the structure for modification.
Study representation of a rectangle.
László Horváth UÓ-JNFI-IAM