COMPUTER AIDED ENGINEERING Morphing with Integrierte Optimierung mit

COMPUTER AIDED ENGINEERING Morphing with Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 1

COMPUTER AIDED ENGINEERING Morphing with ANSA General • Reshape any type of FE mesh without the need to return to the CAD model for modifications • Introduce parametric shape modifications for optimization purpose • Morphing modifications on both FE and Geometry models • Two main methods: - Using Morphing Boxes - Direct Morphing Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 2

COMPUTER AIDED ENGINEERING Direct Morphing – without Morphing Boxes • For local modifications of single components or assemblies • Applicable on FE-mesh and geometry models • Different type of movements: Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 3

COMPUTER AIDED ENGINEERING Direct Morphing – without Morphing Boxes • Snapping to single or multiple target curves • Morphing of FE-mesh or geometry • Origin • Target • Boundary • Morphing • Reconstruct Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 4

COMPUTER AIDED ENGINEERING Direct Morphing – without Morphing Boxes • Snapping to single or multiple target curves • Morphing of FE-mesh or geometry • Origin, Target, Boundary • Morphing Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 5

COMPUTER AIDED ENGINEERING Direct Morphing – without Morphing Boxes Fitting surfaces – e. g. fit existing FE-mesh to new CAD-geometry • Original FE-surface • Target CAD-surface • Morphing Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 6

COMPUTER AIDED ENGINEERING Direct Morphing – without Morphing Boxes Fitting Cross-Sections (applicable on FE-mesh and geometry) • Original Cross-Section • Target Cross-Section • Morphing Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 7

COMPUTER AIDED ENGINEERING Direct Morphing Local Depressions • On arbitrary shell mesh • Different types of cross sections Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 8

COMPUTER AIDED ENGINEERING Direct Morphing Local Depressions Selected Curves Depression Reconstruct Automatically created morphing boxes and morphing parameters Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 9

COMPUTER AIDED ENGINEERING Box Morphing Entities (elements, connections, geometry) loaded to boxes → Moving of control points reshapes the entities Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 10

COMPUTER AIDED ENGINEERING Box Morphing Types of Boxes Hexahedral, Cylindrical and 2 D Boxes Topological connection of different types Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 11

COMPUTER AIDED ENGINEERING Box Morphing Approach 1 • Multiple boxes which follow the shape of the structure • Moving / sliding of control points reshapes the model • Rough modification of model shape Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 12

COMPUTER AIDED ENGINEERING Box Morphing Approach 2 • Single box, split into many whose edges fit on feature lines • Surrounding boxes as buffer zones • Precise modification of model shape Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 13

COMPUTER AIDED ENGINEERING Box Morphing Approach 3 • Box in Box • Separate groups of boxes handle different features • Local and global modifications local modification global modification Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 14

COMPUTER AIDED ENGINEERING Box Morphing Creation of Boxes • Along coordinate system / Min. Volume • Multiple Boxes (Hexa-block, O-ring) • Sweep / Glide • Adapt • Cylindrical • Points • Curves • Offset • Link • . . . Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 15

COMPUTER AIDED ENGINEERING Box Morphing Modification of Boxes • Split / Join • Concentric split • Move • Slide / Extend • Fit (edges, surfaces) • Radius • Angle • Tangency • . . . Translate Rotate Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 16

COMPUTER AIDED ENGINEERING Box Morphing Linked Morphing Boxes • Taking advantage of model symmetry • Link according symmetry-/mirror plane, rotation axis or translation vector Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 17

COMPUTER AIDED ENGINEERING Morph History States • Keep history of morphing actions • Can be stored automatically after morphing actions or manually at any time • Continuous morphing between history states Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 18

COMPUTER AIDED ENGINEERING Additional Constraints – Nested Elements • Applicable for Direct and Box Morphing • Act as un-deformable shapes (rigid bodies) during Morphing • Dependent rigid movements With Nested Elements Without Nested Elements Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 19

COMPUTER AIDED ENGINEERING Morphing Parameter • Couples morphing tool with optimization software • Applicable for almost all interactive morphing modifications • Extend • Angle • Offset • Transform • Radius • Edge Fit • Direct • Deformation • User Tangent • DFM • … Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 20

COMPUTER AIDED ENGINEERING Morphing Parameter Deformation Parameter • Records any morphing action (Direct or Box Morphing) • Retrieve undeformed shape as well as interpolations or extrapolations between undeformed and deformed shape Initial shape – start recording Edge Fit Deformation Parameter Move Free Deformed shape – stop recording Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 21

COMPUTER AIDED ENGINEERING Morphing with Vectors • Morph according previous morphing actions: - Deformation Parameter - History States - DESVAR of Nastran SOL 200 - Text file • E. g. morph geometry according optimized FE-model or morph similar models in same manner Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 22

COMPUTER AIDED ENGINEERING Functionalities assisting Morphing 3 D Points and Curves • Act as initial or target positions • Suitable for Direct and Box Morphing • Obtained from FE mesh or CAD geometry Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 23

COMPUTER AIDED ENGINEERING Functionalities assisting Morphing Part Manager • Useful for Box Morphing (esp. complex configurations) • To organize morph contents Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 24

COMPUTER AIDED ENGINEERING Functionalities assisting Morphing Reconstruct / Smooth morphed mesh • Suitable for Direct and Box Morphing • Improve mesh after morphing with large deformations Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 25

COMPUTER AIDED ENGINEERING Functionalities assisting Morphing Visualize Morphing Deviations • Suitable for Direct and Box Morphing • Measurement Tool • Fringe Plot of deformed shape Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 26

COMPUTER AIDED ENGINEERING Integrierte Optimierung mit ANSA, LS-OPT und META – Infotag 01. 03. 2012 27