APPROVal of Engineering Design models

Transcription

1 APPROVal of Engineering Design models 3 year Research Project 01 June DNV GL June 2017 SAFER, SMARTER, GREENER

2 Maritime industry is changing The maritime industry is facing a serious slowdown which will influence the industry in the years to come. However, companies with the ability to invest in technology and competence will have a head start when the economy regains. Digitalisation will influence the whole maritime value chain, from design to production and operations. 2

3 Change of industry players MANY SPECIFIC SHIP APPLICATIONS Small number of users Few developers Financed by one industry EVOLUTION FEW GENERAL CAD SYSTEMS WITH SHIP FUNCTION Large number of users Many developers Financed by all industries Ongoing consolidation of technology within software Many small custom solutions becomes few high volume solutions Cost of technology decreases as it is shared over a large number of users This is now ongoing in the ship industry

4 Major drivers DATA MANAGEMENT One master model and data management SIMULATION Frontloading of information for downstream automation Virtual prototyping Simulation based design OTHER 3D DRAWING Model based approval and verification A virtual 3D model of the asset early in the design phase MANU- FACTURING RULE ENGINE 4

5 APPROVED APPROVal of Engineering Design models Project Partners 5

6 APPROVal of Engineering Design models Three year research project Financial support from the Research Council of Norway Kick off in Q Project partners: DNV GL (Project Coordinator) Rolls-Royce Marine + AVEVA ULSTEIN + DIGITREAD/Siemens STX France/Intergraph 6

7 Project APPROVED Objectives 7

8 Objectives Prototype, test and evaluate technology and work processes which eliminate the need for exchanging 2D drawings for the purpose of design verification by Class Secondary objectives supporting the main objective: A design centric work process supporting model based approval An industry standard for exchange of digital design models-dex: Digital Exchange specification A cloud service for sharing design models between stakeholders and self for service verification Cloud visualisation of design simulations Change management of shared models Traceability of stakeholder decisions (Comments management) Proof of Concept for Hull discipline Benefits for other disciplines will be identified 8

9 Newbuilding Hull plan approval by Class Focus of APPROVED 9

10 Information exchange: from 2D paper drawings to 3D models 2D HYBRID 2D/3D 3D 3D MODEL BASED CUSTOMER 2D 2D/3D 3D 3D 3D DRAWINGS DRAWINGS+FE 3D EXPORT 3D EXPORT SELF SERVICE CREATE RULE CHECK CREATE FE CREATE RULE CHECK IMPORT FE IMPORT 3D DEX DEX DNV GL OPTIMISE FOR FE OPTIMISE FOR RULE CHECK OPTIMISE FOR FE OPTIMISE FOR RULE CHECK & FE RULE SERVICE VERIFI- CATION VERIFI- CATION VERIFI- CATION VERIFI- CATION VERIFI- CATION 10

11 Project APPROVED Vision 12

12 APPROVED - Model based approval EGGS 13

13 Can a model-based definition replace engineering drawings throughout the product life cycle? 15

14 Can a model-based definition replace engineering drawings throughout the product life cycle? Moving from a paper based process to a fully model based approval process have to solve the following challenges: Which barriers has to be overcome? Which legal requirements must be fulfilled? What are the required model based datasets characteristics? Which tools need to be put in place? 16

15 What is a model? ASME and ISO gives the following definition of the term model: A combination of design model, annotation and attributes that describes a product. Model Annotations Design Model Attributes Model geometry Suppl. geometry Geometric elements 17

16 Model based definition (MBD) MBD is one possible format of Digital Product Definition. ASME gives the following definition of a DPD: A collection of one or more computer file(s) that discloses (directly or by reference), by means of graphic or textual presentations, or combinations of both, the physical and functional requirements of an item. Or, in plain language: The electronic data elements that specify the 3D CAD geometry and all the design requirements for a product (including notation and parts lists) form a Digital Product Definition (DPD) dataset. 18

17 How to define the Digital Exchange Specification (DEX)* Our steps: 1. Establish the information exchange requirements 2. Gap analysis of existing information exchange packages 3. Investigate available DEXs 4. Decide to modify existing or build our own *AIA, Aerospace Industry Guidelines for Implementing Interoperability Standards for Engineering Data 19

18 Information exchange requirements Need to address: 1. Data accessibility and visualization outside CAD environment 2. Data content, presentation and management (What, Why and How) 3. Data security and 4. Data retention 20

19 Lifecycle information exchange: What, Why and How What Why How Form Function Process DEX Geometry Features Material Topology Requirements Functions Constraints Relationships Approval Change management Inspection Testing Maintenance Stakeholders Designer, Class, Yard, Owner 21

20 Existing standards What Why How Form Geometry Features Material Topology Function Requirements Functions Constraints Relationships Process Approval Change management Inspection Testing Maintenance Standards: ISO, STEP Incomplete Evolving 22

21 Lightweight 3D model with multi-layered annotations 1] Stand-off (external or reference) method allows mark-up information to be stored separately from the geometry definition Allows the 3D geometric representation of a product to be progressively expanded to include additional metadata without changing the representation method used for the geometry of the product. Context-specific information can be extracted into several separate files to provide multi-layered mark-up The same mark-up can be applied to different representations of the same model, granting the mark-up information some independence of the CAD format used. Downstream processes (e.g. finite element analysis and rule calculations) become capable of independence from the full CAD model [1] Ding, Ball (2011). Lightweight Product Lifecycle Information Management for Small Enterprises, International Journal of Product Lifecycle Management, DOI: /IJPLM

22 DEX structure: Separate between Form and Function/Lifecycle What Why How Form Function Process DEX Geometry Features Material Topology Requirements Functions Constraints Relationships Approval Change management Inspection Testing Maintenance 3D lightweight model Annotations (external reference) 24

23 Lightweight exchange format: Advantages & disadvantages Format Advantages Disadvantages CAD Neutral Complete representation No conversion Standardised Express explicit geometry CAD independent Lightweight Small file size Supports 3D annotations Data encryption mechanisms CAD independent Proprietary formats Heavy file size Lack of IPR protection Lack of IPR protection Heavy file size Complex to use & implement Lagging behind tool development Conversion required Visualization application required Approximate geometry representation From: V. Quintana, L. Rivest, R. Pellerin, and F. Kheddouci, Re-engineering the Engineering Change Management process for a drawing-less environment, Comput. Ind., vol. 63, no. 1, pp , Jan

24 Lightweight exchange format: Advantages & disadvantages DEX From: V. Quintana, L. Rivest, R. Pellerin, and F. Kheddouci, Re-engineering the Engineering Change Management process for a drawing-less environment, Comput. Ind., vol. 63, no. 1, pp , Jan

25 DEX exchange during newbuilding Designer CAD model Approval Engineer Link to Annotations Xml-based files The DEX is generated by the CAD system Represents a snapshot of the design Supports several plan approval activities Standoff annotations links back to CAD model providing direct feedback to the designer Generate Lightweight model 1 Stability, weathertight integrity Annotate Adds flexibility and support for new processes and ad.hoc. Information exchange Lightweight model 2 Hull and structure Annotate Lightweight model n Site survey Annotate DEX Newbuilding plan approval activities DEX

26 DEX: Visual annotations Visual annotations should not simply replace current document requirements We see 3D annotations complimentary to standardized meta data model analyzing such as visual reporting etc. Visual annotations will be generated on special intention and may more information than provided as meta data Visual reporting analyzing assigned meta data with pre-defined standardized reports should be considered 31

27 DEX: Major challenges A DEX lightweight model approach needs to solve the following challenges: 1. Technical: Adequate viewer support Reference stand-off annotations to entities in the CAD model Security & long term preservation 2. Rules and requirements adaptation Today 2D drawings are required as documentation at vessel delivery by regulatory bodies 3. Behavioural: A mind shift is required to move from communicating using 2D drawings as a language to a 3D based environment Require a change in the way of working 32

28 Many advantages if we succeed The same annotation file can be applied to any copy of the model in any format; this allows the annotation information to be shared by a wide variety of users. Multiple independent annotation files can be safely applied to the same CAD model. Thus, it allows context-specific information to be stored in a number of separate files and passed around only as needed. Annotations can be edited, circulated, and processed independently of the model, while the CAD model remains unchanged. This allows downstream processes to be independent of the CAD model. CAD model does not need to be exchanged preserving IPR of the owner Annotations are independent of CAD format / vendor Associate annotations to the correct entity in the model Capture the process of decision making

29 DEX the information backbone The DEX can provide one source for: Compliance check Visual check replacing exchange of 2D drawings Compliance check according to DNV GL Rules Comment management and collaboration with all stakeholders Other DEX Visual check Input to prototype simulation (FE, CFD..) Site survey Simulate FE, CFD.. Construction survey at newbuilding site providing 3D visuals and design decisions Other downstream use scenarios Comment management 34

30 Thank you! Ole Christian Astrup SAFER, SMARTER, GREENER 40