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Creating Custom materials in SolidWorks Plastics
  • Creating Custom materials in SolidWorks Plastics

    Posted on Jun Tue, 2018 by Do Thai Quoc Dung

    User can find a variety of Pre-defined polymer database in SOLIDWORKS Plastics material library which can be used for the plastic mold flow studies. SolidWorks Plastics allows users to create their own custom materials into the database which can be used by the user at latter stages. In this blog we will go through the process in creating custom material properties. In SolidWorks Plastics material database, user can find two categories: (1) Default Database – all the default materials will be stored under this categories & (2) User-Defined Database- Any user defined materials will be stored under this categories.

    – Click “Polymer” under Plastic Feature Manager Design Tree

    – Click “User-Defined Database” in the Polymer window

    – Click “Add material” and enter the name of the material to be created

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    – User might not be able to obtain all the properties stated under this new material, but there are certain properties which are required to run the Mold flow simulation. The properties required are:

    • Melt Temperature: Temperature at which Resin should be heated inside the barrel and screw.
    • Mold Temperature: Temperature the mold maintains thought the injection molding process.
    • Part Ejection Temperature: Temperature the part must reach before it is ejected.
    • Glass Transition Temperature: Temperature at which a resin is considered solid.
    • Specific Heat: The amount of thermal energy it takes to heat 1kg of material 1 deg K.
    • Thermal Conductivity: Used to characterize how easily thermal energy can transfer through a material.
    • Viscosity: Measure of how easily the fluid can flow. For Viscocity User can define the data based on 6 different methods based on the inputs which provided by their distributer. It is always better to define with more parameters models as it will accurately define the property.

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    • PVT data (Pressure, Volume and Temperature): Thermodynamic information is import for liquid resins as it is used to determine how much plastic will shrink as it cools during injection molding process. There are 4 different methods to define PVT properties, based on the data available user can define. It is always better to define with more parameters models as it will accurately define the property.

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    • Thermal Expansion Coefficient: Used to describe how the material expands and contracts with change in temperature.
    • Young’s Modulus: Also known as Elastic Modulus is a property used to define the stiffness of the material.
    • Poisson’s Ratio: Defined as Ratio of Lateral Strain and Axial Strain.

    – After entering the values for the above properties, Click on OK to complete creating a New Custom Materials.

    – Users can edit, view and redefine the properties anytime.

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