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Workshop: Testing, Modeling and Validation for Plastics & Rubber Simulation in ANSYS

by DatapointLabs8,015 views

Plastics exhibit non-linear viscoelastic behavior followed by a combination of deviatoric and volumetric plastic deformation until failure. Capturing these phenomena correctly in simulation presents a challenge because of limitations in commonly used material models. We follow an approach where we outline the general behavioral phenomena, then prescribe material models for handling different phases of plastics deformation. Edge cases will then be covered to complete the picture. Topics to be addressed include: Using elasto-plasticity; When to use hyperelasticity; Brittle polymers – filled plastics; Failure modes to consider; Criteria for survival; Choosing materials; Spatial non-isotropy from injection molding; Importance of residual stress; Visco-elastic and creep effects; Strain-rate effects for drop test and crash simulations; Fitting material data to FEA material models; The use of mid-stage validation as a tool to confirm the quality of simulation before use in real-life applications.

Hubert Lobo, President, and Brian Croop, Laboratory Director, DatapointLabs Technical Center for Materials

Presentations delivered as part of a short course prepared for the Western Pennsylvania ANSYS User's Group Fall 2016 Meeting on October 21, 2016, in Canonsburg, PA USA.

ANSYSDensityHyperelasticInjection MoldingMechanicalPlasticityPlasticsPresentationsRate DependencyRheologyRubbersStructural AnalysisThermalValidationViscoelasticYielding/Failure Analysis

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DatapointLabs

DatapointLabs Technical Center for Materials is a US-based center of excellence for the measurement of physical properties of materials needed for product development, CAE, and R&D. With our testing services and software for materials, we help companies build enduring data collections that accurately represent the materials used in their products.

To date, more than 30,000 materials have flowed through the laboratory, providing data for over 1,200 companies around the world, including automotive, aerospace, appliance, biomedical, consumer products, electronics, and material supplier verticals. DatapointLabs offers TestPaks to provide CAE-ready material properties data for most major simulation software packages.

In 2018, DatapointLabs joined the Applus+ Group, a worldwide leader the testing, inspection and certification sector. In 2020, DatapointLabs celebrated 25 years of putting materials into product design.

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