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Methodology for Selection of Material Models for Plastics Impact Simulation 

by DatapointLabs5,994 views

The volume of plastics that are subjected to impact simulation has grown rapidly. In a previous paper, we discussed why different material models are needed to describe the highly varied behavior exhibited by these materials. In this paper, we cover the subject in more detail, exploring in depth, the nuances of commonly used LS-DYNA material models for plastics, covering important exceptions and criteria related to their use.

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ANSYSAbaqusAerospace and DefenseAltair RADIOSSAutomotiveConsumer ProductsIndustrial GoodsLS-DYNAMaterial SupplierNonlinear Material ModelsPAM-CRASHPackagingPlasticsResearch PapersStructural Analysis

A Novel Technique to Measure Tensile Properties of Plastics at High Strain Rates

by DatapointLabs6,760 views

High strain-rate properties have many applications in the simulation of automotive crash and product drop testing. These properties are difficult to measure. These difficulties result from inaccuracies in extensometry at high strain rates due to extensometer slippage and background noise due to the sudden increase in stress at the start of the test. To eliminate these inaccuracies we use an inferential technique that correlates strain to extension at low strain rates and show that this can be extended to measure strain at higher strain rates

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ANSYSAbaqusAerospace and DefenseAutomotiveConsumer ProductsHigh Speed TestingHome AppliancesLS-DYNAMSC.DYTRANMaterial SupplierMechanicalNonlinear Material ModelsPAM-CRASHPackagingPlasticsRate DependencyResearch PapersStructural AnalysisToys/Sporting Goods

Understanding the Role of Material Properties in Simulations, Part 2

by DatapointLabs5,643 views

We discuss material properties in injection molding simulations, including the definition of property requirements, identification of evaluation parameters, and the role of material properties at each stage of the injection molding process, from mold filling through cooling, post-filling and shrinkage/warpage considerations.

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C-MOLDCadmouldInjection MoldingMaterial SupplierMold Maker/DesignerMoldex3DMoldflowPackagingPlasticsPresentations

High Speed Stress Strain Material Properties as Inputs for the Simulation of Impact Situations

by DatapointLabs6,392 views

With the recent changes in the crashworthiness requirements for US automobiles for improved safety, design engineers are being challenged to design interior trim systems comprised of polymeric materials to meet these new impact requirements. Impact analysis programs are being used increasingly by designers to gain an insight into the final part performance during the design stage. Material models play a crucial role in these design simulations by representing the response of the material to an applied stimulus. In this work, we seek to develop novel test methods to generate high speed stress-strain properties of plastics, which can be used as input to structural analysis programs...

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ANSYSAbaqusAerospace and DefenseHigh Speed TestingHome AppliancesLS-DYNAMSC.DYTRANMaterial SupplierMetalsNonlinear Material ModelsPAM-CRASHPackagingPlasticsResearch PapersStructural AnalysisThermoformingToys/Sporting Goods