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 http://users.nik.uni-obuda.hu/lhorvath/

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 http://nik.uni-obuda.hu/lhorvath/

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 http://nik.uni-obuda.hu/lhorvath/

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 http://nik.uni-obuda.hu/lhorvath/

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 http://nik.uni-obuda.hu/lhorvath/

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 http://nik.uni-obuda.hu/lhorvath/

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 http://nik.uni-obuda.hu/lhorvath/

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 http://nik.uni-obuda.hu/lhorvath/

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 http://nik.uni-obuda.hu/lhorvath/

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 http://nik.uni-obuda.hu/lhorvath/

Definition in virtual space Curvature analysis on surfaces of a solid. Manikin for ergonomic analysis. László Horváth UÓ-JNFI-IAM http://nik.uni-obuda.hu/lhorvath/

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 http://nik.uni-obuda.hu/lhorvath/

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 http://nik.uni-obuda.hu/lhorvath/

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 http://nik.uni-obuda.hu/lhorvath/

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 http://nik.uni-obuda.hu/lhorvath/

Contextual object definition Laboratory task VE1.3 László Horváth UÓ-JNFI-IAM http://nik.uni-obuda.hu/lhorvath/

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 http://nik.uni-obuda.hu/lhorvath/

Contextual object definition Laboratory task VE1.3 László Horváth UÓ-JNFI-IAM http://nik.uni-obuda.hu/lhorvath/

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 http://nik.uni-obuda.hu/lhorvath/

Contextual object definition Laboratory task VE1.3 László Horváth UÓ-JNFI-IAM http://nik.uni-obuda.hu/lhorvath/

Contextual object definition Laboratory task VE1.3 On-site modification of the base feature by a new tabulated solid. László Horváth UÓ-JNFI-IAM http://nik.uni-obuda.hu/lhorvath/

Contextual object definition Laboratory task VE1.3 László Horváth UÓ-JNFI-IAM http://nik.uni-obuda.hu/lhorvath/

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 http://nik.uni-obuda.hu/lhorvath/