NX<br />LAMINATE<br />COMPOSITES<br />
Laminate Composites | Key Elements<br />1<br />2<br />Product Info & Workflow<br />Key Capabilities<br />3<br />Demonstrat...
PRODUCT INFO & WORKFLOW<br />
NX Laminate Composites Product Overview<br />NX CAE product for finite element analysis of laminate structures featuring:<...
 Efficient validation of composites design
 Powerful laminate optimization engine
 Easy-to-use hand layup manufacturing process simulation using:
 Ply-based modeling
 Draping and flat pattern creation
 Prerequisite:
NX Advanced Simulation</li></ul>or<br /><ul><li> NX Advanced FEM + FE Solver Environment</li></li></ul><li>Laminate Compos...
KEY CAPABILITIES<br />
NX Laminate Composites Core Features <br /><ul><li> Physical Property-based Modeling
 Ply-based Modeling & Draping
 Micromechanics-based Ply Materials
 Laminate Validation
 Laminate Properties Optimization
 NX FE Solver Environments
 Advanced Post-processing & Reporting</li></li></ul><li>KEY CAPABILITIES<br />Laminate Modeling<br />
Physical Property-Based Laminate Modeling<br /><ul><li> Traditional and simplest simulation technique
 Excellent for preliminary design cycle and simple geometry
 Interactive modeler allows fast creation of laminate definition</li></li></ul><li>Physical Property-Based Laminate Modeli...
Modeling Options<br />Ply based or Physical Property based modeling can be used in the same fem<br />Decision is made at t...
KEY CAPABILITIES<br />Ply-based Modeling & Draping<br />
Ply-Based Modeling & Draping<br />Workflow simulates manufacturing using the hand layup process<br />Ply-based modeling<br...
 Automatically computes the physical properties based on the ply definitions</li></ul>Draping<br /><ul><li> Ability to pre...
 Ability to use splices and cut curves where fiber shear angle becomes problematic </li></li></ul><li>Ply-Based Modeling<b...
 Easy and Fast Definition of Layup Definition
 Manages Global Plies
 Independent from Physical Properties
 All Plies in the Layup are Included
 Option to import layups from laminate modeler</li></li></ul><li>Ply-BasedModeling<br />Splices and cut curves<br /><ul><l...
 Used as a Boundary for the Draping Algorithm
 Ply Orientation can be Different on Each Side of the Splice and Cut Curves
 FEM Retains Nodal Continuity between Elements on Each Side of the Splices and Cut Curves</li></ul>Practical usage: Whenev...
Ply-Based Modeling<br />Shell Element Material Orientations<br /><ul><li> Define the Zero Degree Angle Direction of the Co...
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PLM Connection: NX Laminate Composites

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Remi Duquette of MAYA HTT presented at PLM Connection Europe on NX Laminate Composites. See www.siemens.com/plm/blog for related blog post and more from this event.

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PLM Connection: NX Laminate Composites

  1. 1. NX<br />LAMINATE<br />COMPOSITES<br />
  2. 2. Laminate Composites | Key Elements<br />1<br />2<br />Product Info & Workflow<br />Key Capabilities<br />3<br />Demonstration <br />4<br />Question / Answer<br />
  3. 3. PRODUCT INFO & WORKFLOW<br />
  4. 4. NX Laminate Composites Product Overview<br />NX CAE product for finite element analysis of laminate structures featuring:<br /><ul><li> Intuitive ply and laminate definition tools
  5. 5. Efficient validation of composites design
  6. 6. Powerful laminate optimization engine
  7. 7. Easy-to-use hand layup manufacturing process simulation using:
  8. 8. Ply-based modeling
  9. 9. Draping and flat pattern creation
  10. 10. Prerequisite:
  11. 11. NX Advanced Simulation</li></ul>or<br /><ul><li> NX Advanced FEM + FE Solver Environment</li></li></ul><li>Laminate Composites PLMWorkflow Consideration<br />NX Laminate Composites allows design of laminates in the advanced simulation (CAE) environment<br />LAMINATE COMPOSITES<br />Design<br />CAE<br />Manufacturing<br />
  12. 12. KEY CAPABILITIES<br />
  13. 13. NX Laminate Composites Core Features <br /><ul><li> Physical Property-based Modeling
  14. 14. Ply-based Modeling & Draping
  15. 15. Micromechanics-based Ply Materials
  16. 16. Laminate Validation
  17. 17. Laminate Properties Optimization
  18. 18. NX FE Solver Environments
  19. 19. Advanced Post-processing & Reporting</li></li></ul><li>KEY CAPABILITIES<br />Laminate Modeling<br />
  20. 20. Physical Property-Based Laminate Modeling<br /><ul><li> Traditional and simplest simulation technique
  21. 21. Excellent for preliminary design cycle and simple geometry
  22. 22. Interactive modeler allows fast creation of laminate definition</li></li></ul><li>Physical Property-Based Laminate Modeling<br />Minimize the effort required to create and modify complex, multi-ply laminates <br />Ply Groups<br />Pre defined stacking sequences<br />Excel interface (to/from)<br />
  23. 23. Modeling Options<br />Ply based or Physical Property based modeling can be used in the same fem<br />Decision is made at the collector level<br />
  24. 24. KEY CAPABILITIES<br />Ply-based Modeling & Draping<br />
  25. 25. Ply-Based Modeling & Draping<br />Workflow simulates manufacturing using the hand layup process<br />Ply-based modeling<br /><ul><li> Allows for efficient laminate creation in many cases
  26. 26. Automatically computes the physical properties based on the ply definitions</li></ul>Draping<br /><ul><li> Ability to predict fiber orientations for plies that are laid on undevelopable (doubly curved) surfaces
  27. 27. Ability to use splices and cut curves where fiber shear angle becomes problematic </li></li></ul><li>Ply-Based Modeling<br />Layup Modeler<br /><ul><li> Similar to laminate modeler, except:
  28. 28. Easy and Fast Definition of Layup Definition
  29. 29. Manages Global Plies
  30. 30. Independent from Physical Properties
  31. 31. All Plies in the Layup are Included
  32. 32. Option to import layups from laminate modeler</li></li></ul><li>Ply-BasedModeling<br />Splices and cut curves<br /><ul><li> Uses Polygon Edges in NX Advanced FEM/SIM
  33. 33. Used as a Boundary for the Draping Algorithm
  34. 34. Ply Orientation can be Different on Each Side of the Splice and Cut Curves
  35. 35. FEM Retains Nodal Continuity between Elements on Each Side of the Splices and Cut Curves</li></ul>Practical usage: Whenever Draping on Undevelopable Surface Causes Excessive Fiber Shear<br />
  36. 36. Ply-Based Modeling<br />Shell Element Material Orientations<br /><ul><li> Define the Zero Degree Angle Direction of the Computed Laminate Properties</li></ul>Material Orientation Definition Methods<br /><ul><li> Using Fiber Angles from Draping Algorithm
  37. 37. Manual Assignment at the Mesh Level
  38. 38. Manual Assignment at the Element Level</li></li></ul><li>Draping<br />Draping Algorithm Options<br /><ul><li> Unidirectional
  39. 39. Fibers do not Stretch and Remain Parallel
  40. 40. Fibers Can Slide Relative to Each Other
  41. 41. Woven
  42. 42. Fishnet Algorithm Orients Warp & Weft Fibers
  43. 43. Fibers do not Stretch, but Can Rotate (Shear) Relative to Each Other
  44. 44. Lock Angle is the Maximum Allowed Shear Between Warp & Weft Fibers
  45. 45. None
  46. 46. Projection of the Ply Directions using the Material Orientation as the 0 Degree Reference</li></ul>For Stability, the Draping Algorithm uses the 2D Mesh Associated to the Selected Surfaces<br />
  47. 47. Draping<br />Draped Fiber Orientations Visualization<br /><ul><li> Color Coded to Show Shear between Warp & Weft Fibers </li></li></ul><li>Draping<br />Flat Patterns Creation <br />Can be exported to NX part files<br />
  48. 48. Draping<br />Zone-Based Definition Feedback: <br />Visualize Elements Sharing the Same Laminate Definition<br />
  49. 49. KEY CAPABILITIES<br />Laminate Validation Tools<br />
  50. 50. Laminate Validation<br />Laminate Validation Output<br /><ul><li> Stiffness matrices ABDS
  51. 51. Equivalent engineering constants</li></li></ul><li>Laminate Validation<br />Strength Analysis<br /><ul><li> Compute Failure Indices and Margins of Safety
  52. 52. Compute Ply Strains and Stresses</li></li></ul><li>Strength Analysis<br />Supported Failure Theories<br /><ul><li> Maximum Stress
  53. 53. Maximum Strain
  54. 54. Tsai-Wu
  55. 55. Hill
  56. 56. Hoffman
  57. 57. LaRC0* (planned)</li></li></ul><li>KEY CAPABILITIES<br />Laminate Properties Optimization<br />
  58. 58. Optimization<br />Laminate Optimization Tool<br /><ul><li> Goal is to optimize the fundamental behavior of the laminate
  59. 59. Optimizes a single laminate physical property (equivalent to coupon testing and optimization)</li></ul>Built around a Genetic optimizer, it can handle<br /><ul><li> Continuous variables such as an orientation angle
  60. 60. Discrete variables such as the existence of a ply or selection of a material from a list</li></ul>The optimization provides 5 laminate definitions that come the closest to fulfilling the objectives<br /><ul><li> You can select one of the five to replace the original laminate</li></li></ul><li>Optimization<br />Design Variables<br /><ul><li> Ply orientation
  61. 61. Continuous
  62. 62. From list
  63. 63. Ply existence
  64. 64. Ply thickness
  65. 65. Continuous
  66. 66. From list
  67. 67. Ply material</li></li></ul><li>KEY CAPABILITIES<br />NX FE SolverEnvironment Support<br />
  68. 68. Multiple FE Solver Environment Support<br />Laminate Element Type Support for Each Solver<br /><ul><li>NASTRAN
  69. 69. PCOMP – MEM/BEND/SMEAR/SMCORE
  70. 70. PSHELL
  71. 71. ANSYS
  72. 72. 2D
  73. 73. SHELL181, SHELL99, SHELL91, SOLSH190
  74. 74. 3D
  75. 75. SOLID186, SOLID191, SOLSH190
  76. 76. ABAQUS
  77. 77. 2D 
  78. 78. S8R, S8R5, S4, S4R, STRI65, S3, S3R
  79. 79. 3D
  80. 80. C3D8, C3D8R, C3D8I, C3D20, C3D20R, C3D20I,  C3D6, C3D15
  81. 81. LS-DYNA
  82. 82. 2D 
  83. 83. *ELEMENT_SHELL
  84. 84. 3D 
  85. 85. *ELEMENT_TSHELL</li></li></ul><li>KEY CAPABILITIES<br />Post-processing & Reporting<br />
  86. 86. NX Post-Processing<br />Graphical Display of Laminate Results<br /><ul><li> Ply Strains
  87. 87. Ply Stresses
  88. 88. Ply Failure Indices
  89. 89. Shell stress resultants</li></li></ul><li>Laminates Graphical Reporting<br />Laminates Meta-Solution Results<br /><ul><li> Data in binary BUN result file format
  90. 90. Allows you to Envelope ply and load case results
  91. 91. Margins of safety
  92. 92. Failure indices
  93. 93. Ply stresses
  94. 94. Ply strains </li></li></ul><li>Laminates Spreadsheet Reporting<br />Quickly Identify Problem Areas<br /><ul><li> Excel Interface
  95. 95. Single or multiple results sets
  96. 96. Single or multiple load cases
  97. 97. Ply stresses and strains
  98. 98. Recover from solution, or
  99. 99. Compute using shell stress resultants and current laminate definitions, or
  100. 100. Both</li></li></ul><li>Laminates Spreadsheet Reporting<br />Top summary showing filtered and sorted results for all results files and cases<br />For each results file and load case<br />Solver stresses and derived results<br />Results derived from solver shell stress resultants<br />Solver shell stress resultants<br />
  101. 101. DEMONSTRATION<br />
  102. 102. QUESTION / ANSWER<br />Remi Duquette<br />remi.duquette.ext@siemens.com<br />remi.duquette@mayahtt.com<br />

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