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Introduction to Composite Material Modeling with SolidWorks Simulation Premium
Henri Dos SantosHelping Designers make the right choice
insight
Presentation Outline
• Introduction
• Characterisation of Composite Materials
• Composite Applications
• SolidWorks Simulation Premium Composite Positioning
• SolidWorks Simulation Premium Functional Composite Specifications
• Composite Sandwich principle
• Composite failure
• Composite Modelling in SolidWorks
• Quality of our results
• Conclusion
Introduction - What is a composite Material?
Four basic categories of structural materials :
• Metals
• Polymers
• Ceramics
And
• Composites
Definition : « Composite materials consist of two or more separate materials combined in a macroscopic structural unit »
Introduction
improved specific properties not obtainable by any of the original components acting alone
Introduction - History facts/ Did you know?
Introduction - History facts/ Did you know?
The ancient Egyptians were the first people
known to make use of plywood
reinforced concrete invented by the Romans approx. 1000 BC (“opus
caementicium”)
Advantages and Disadvantages of Composites
Advantages and Disadvantages of composites
Types of composite
Composites include :
• Fibrous : Composed of fibers, in a matrix
• Laminar : layers of materials
• Particulate : Composed or particles or flakes, in a matrix
• Hybrid : combinations of any of the above
Roles of the matrix and Reinforcement in a composite :
Types of composite
Types of composite
• Fiber reinforced plastics (FRP)
• Sandwich structures
• FRP facings, aluminum facings, steel facings and core (foam, honeycomb, etc)
• Multi-layer laminates
• Metal Matrix Composites (MMC's)
• Glass matrix composites
• Ceramic Matrix Composites
• Ceramic Ceramic Composites
• Carbon Carbon Composites
• etc.
Use of composites today
Use of composites today
25% of the A380's airframe by weightCarbon-fibre reinforced plastic (CFRP)
glass-fibre reinforced plastic (GFRP)
quartz-fibre reinforced plastic (QFRP)
GLARE (GLAss-REinforced fibre metal laminate)
But also
Use of composites today
Positioning & Marketing…
Composite Material modeling has been added to SolidWorks Simulation Premium
Scoped to be a tool for Design Engineers who wish to:
• Explore the use of composites as a replacement for sheet metal, thin walled castings, or other homogenous thin walled materials
• Evaluate the benefits and/or sensitivity of material, thickness, number of plys, or orientation in an existing thin walled composite material application
Functional Specifications…
Composite formulations supported:
• 3-layer Sandwich
• Multi-layer Symmetric and Asymmetric (50 layers max.) (laminates)
Study Types supported:
• Static
• Frequency
• Buckling
Material supported :
• Each layer can be isotropic or orthotropic
Output supported:
• Tsai-Hill, Tsai-Wu, Max Principal Stress FOS plots
• Interlaminar Shear Stress
• General Stress and Displacement output per shells
Sandwich
Theorical Symmetric Sandwich Beam principle
bending stiffness ???
Theories for Predicting Failure of Composite Laminates
A variety of failure criteria exist to predict the ply level ultimate strength in polymer matrix composites.
Maximum Stress simply compare macroscopic (ply level) stresses in each coordinate direction to maximum values.
Tsai-Hill and Tsai-Wu use quadratic (and tensor in the case of Tsai-Wu) combinations of the stresses to account for stress interaction.
SolidWorks 2009
Improve the Quality of Your Design
Goals
• Minimize deflexion Max (<15 mm)
• Minimize weight of the part (<300 g)
• Geometry/global shape can’t be changed !!
• Free to change thickness and materials
Force= 50N
SolidWorks 2009
Current design :
• Material used is orthotropic
• Thickness is 3 mm
• deflexion Max is 18.2 mm
• weight is 733 g
SolidWorks 2009
New design :
• composite
• Sandwich definition with a foam material
• Same previous material for skins
• Total Thickness is 5.5 mm
• deflexion Max is 13.7 mm
• weight is 204 g
Benefits :
SolidWorks 2009 – Composite support
Conclusion
» Composite materials have great potential in the next decades
»
Thank You
Henri Dos SantosHelping Designers make the right choice
insight
SolidWorks Simulation add Value & Strength to Your Products
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