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Composites and ANSYS Composite PrepPost.pdf
Composites and ANSYS Composite PrepPost.pdf
April 3, 2018 | Author: Kattari Dwi | Category:
Composite Material
,
Stress (Mechanics)
,
Extrusion
,
Shell (Computing)
,
Computing And Information Technology
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Composites modeling with ANSYS Modeling Layered Composites the Simple Way Mayuran S. Muttulingam 1 © 2011 ANSYS, Inc. October 12, 2011 Motivation Composites offer tremendous weight savings, increased performance, and design flexibility The composites market is a relatively young, fast growing and technologically evolving market 2 © 2011 ANSYS, Inc. October 12, 2011 Motivation Composites offer tremendous weight savings, increased performance, and design flexibility 3 © 2011 ANSYS, Inc. October 12, 2011 2011 . Inc. Motivation The composites market is a relatively young. fast growing and technologically evolving market 4 © 2011 ANSYS. October 12. October 12. Levels of Analysis 5 © 2011 ANSYS. 2011 . Inc. Inc. October 12. Challenges Multiple materials. composites are much more challenging to analyze 6 © 2011 ANSYS. large number of plies etc. makes the job difficult to design parts with these materials Compared to homogenous materials like steel or plastic. complex layups. 2011 . We are able to realize a continuous design process from simulation results to manufacturing including design modifications within the development. Rotor Blade Development. Inc. ANSYS Composite PrepPost (ACP) “The intuitive implementation of composite design development in ANSYS Composite PrepPost brought out a revolution in composite simulations. 2011 .“ Hendrik Mester. REpower Systems AG 7 © 2011 ANSYS. October 12. 2011 . Inc. Shell based composites 8 © 2011 ANSYS. October 12. October 12. 2011 .0 Motivation ANSYS Workbench provides superior CAD connectivity. meshing and a easy framework to perform design optimization With R14. Analyzing Composites in R14. Inc.0. we greatly improve the workflow for analysis of composite components 9 © 2011 ANSYS. Engineering Data Enhancements New in R14 New at Release 14. Inc. Puck. LaRc03/04 Constants Properties available to ACP and Mechanical and MAPDL 10 © 2011 ANSYS. 2011 .0 Orthotropic stress/strain strength properties Tsai‐Wu. October 12. October 12. Manually Defining Layers on Simple Geometries Users can define simple layered sections for a shell body as well as define thicknesses and angles as parameters 11 © 2011 ANSYS. Inc. 2011 . 2011 . Basic Layer Definition in Mechanical New in R14 Layered Section Object Allows a user to define simple layered section for a shell body Inserted under the Geometry folder from the toolbar or its RMB insert menu 12 © 2011 ANSYS. October 12. Inc. October 12. Inc. 2011 . Worksheet View to enter layer data Thickness. etc. Layered Section Object Details Scope to bodies or faces Options to define offset and sequencing Graphics option to display specific layer to help verify correct offset. angle values can be parameterized 13 © 2011 ANSYS. sequence. Location 14 © 2011 ANSYS. Inc. 2011 . October 12. Layered Section Object Example Graphics : Section Thickness . Postprocessing Layer Control. October 12. 2011 . Membrane/Bending Output New Membrane‐ Bending stress results. Ability to choose which layer to view results 15 © 2011 ANSYS. Inc. October 12. 45o to Bat Axis 16 © 2011 ANSYS. Inc. 2011 . Explicit Composite Example New in R14 CFRP Baseball bat with spiral CRFP reinforcement Normal Stress in 3rd Ply. 2011 . 17 © 2011 ANSYS. Defining Layers on Complex Geometries For complex geometries. October 12. Inc. the ANSYS Courtesy of TU Chemnitz Composite PrepPost and GHOST Bikes GmbH tool is used and layer definitions are imported in the assembly model in ANSYS Mechanical. 2011 . Data Integrated ACP with WB New in R14 ACP introduced as a component system inside WB Like a typical WB system. Duplicate Consume materials from Engineering Data 18 © 2011 ANSYS. Inc. October 12. file management and standard actions like Update. October 12. ACP‐Mechanical Linkage New in R14 ACP Pre system contains EDA. Model and Setup (same as ‘Mechanical’ system) Setup cell launches ACP Editor Mesh (shell) is transferred from Mechanical into ACP ACP then passes. 2011 . discrete section data to Mechanical as ‘Imported Layered Section’ object 19 © 2011 ANSYS. Inc. Geometry. October 12. 2011 . Inc. ACP‐Mechanical: Example Schematic New in R14 Explicit Implicit (Autodyn) (MAPDL) Parameter Support Include as part of Design Exploration 20 © 2011 ANSYS. Material Definition You can define additional composite layers using the concept of fabrics. October 12. stackups and sub‐laminates 21 © 2011 ANSYS. 2011 . Inc. Inc. 2011 . October 12. Manual definition Complex Curved Structures A system of rosette combination can be used to Define material reference directions 22 © 2011 ANSYS. 23 © 2011 ANSYS. Draping For structures with high curvatures etc. October 12. Inc. Manufacturability is a big factor in design ACP can predict draping. fiber angle correction etc. 2011 . Validation Verify model setup by viewing the stacking sequences or by generating a Ply‐book Cross‐section views Ply‐Book generation 24 © 2011 ANSYS. October 12. Inc. 2011 . Inc. 2011 . October 12. Asymmetric Laminates ACP allows multi‐ orientations of the same region to support asymmetric laminate definition 25 © 2011 ANSYS. Inc. 2011 . Post‐Processing State of the art post‐processing Identify critical parts by highlighting failure mode. failed layer and critical load case in one plot tw(31) (0) tw(31) (0) tw(31) (0) tw(31) (0) 26 © 2011 ANSYS. October 12. October 12. Inc. For most models this results in a drastic reduction of section‐data which helps improve solver performance 27 © 2011 ANSYS. Miscellaneous Enhancements New in R14 VCCT →In R14. ACP now groups elements with similar or identical section‐definition (based on limit‐angle and –thickness). ACP you can define a modeling‐ply as a VCCT layer. Performance →In R14. When the solid‐model is generated a VCCT layer is introduced between the corresponding plies. 2011 . Solid composites models 28 © 2011 ANSYS. Inc. 2011 . October 12. Inc. Solid Extrusion Use CAD data to create cut‐off rules CAD data can be used to extrude plies from surface to SOLID mesh to model complex 3D shapes 29 © 2011 ANSYS. October 12. 2011 . Solid Extrusion Varying core thickness applied by tables or 3D CAD model 30 © 2011 ANSYS. Inc. October 12. 2011 . Inc. October 12. 31 © 2011 ANSYS. 2011 . Auto Detect Butt‐Joined Ply Boundaries New in R14 In R13 ACP creates drop‐ off elements on all ply boundaries Three adjacent plies with intermediate drop‐off With R14 ACP will now elements (R13) automatically collect non‐ overlapping plies and extrude them in one group in order to create smooth Three adjacent plies transition zones in with smooth transition zone (R14) between of them. Multi‐Component Mesh extrusion New in R14 In R14 ACP will detect free shared edges and automatically eliminate internal free edge ends to enable a fully automatic solid extrusion of a more general class of shell meshes. Inc. October 12. Two‐component tube assembly Three virtual components Solid extrusion in ACP 14 with two free shared edges (R14) (illustration without butt‐joined plies) 32 © 2011 ANSYS. 2011 . stiffened. Partner‐ESAComp Concept •Design Concept •Material Selection •Preliminary Lay‐up Design ESAComp •Laminate analyses: Solid laminate / Sandwich •Analyses involving geometry: Panel (flat. Notches •Material Data Bank •Multiple failure criteria •Polar plots. 2011 33 . October 12. curved). Layer charts •ESAComp/ANSYS ACP Interface 33 © 2011 ANSYS. Beams. Joints. Inc. Partner‐ESAComp Concept Geometry FE Analysis • ESAComp • ANSYS • ANSYS & Design Modeler ANSYS WB • ANSYS Space Claim • ANSYS Composite Direct Modeler PrepPost 34 © 2011 ANSYS. Inc. October 12. 2011 34 . October 12. Interact with Vistagy’s FiberSIM for manufacturing details 35 © 2011 ANSYS. Inc. 2011 . Inc. Composites Modeling with ANSYS Solutions 36 © 2011 ANSYS. October 12. 2011 .
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