Material Insights by Technical Interest

Nonlinear Material Models

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Integrated Experimental Analysis, Modeling, and Validation of High-Performance UD CFRTP Lamina

by DatapointLabs4,416 views

Thermoplastic composites present a promising opportunity for innovation within the automotive sector, owing to their lightweight properties, durability, and recyclability. Our efforts concentrate on testing and developing models to accurately simulate the behavior of materials in automotive settings. By delivering precise simulation models, we empower manufacturers to gain deeper insights into the performance of these materials, thereby streamlining their incorporation into vehicle design and manufacturing workflows. This advancement ensures the effective utilization of thermoplastic composites, resulting in tangible advantages such as improved fuel efficiency, enhanced safety, and reduced environmental footprint across the automotive industry.

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AutomotiveCompositesNonlinear Material ModelsValidation

A Framework for the Calibration and Validation of Multiscale Material Models

by DatapointLabs12,330 views

Multiscale material models are being increasingly applied for high-level simulation of complex materials, such as continuous reinforced material products (unidirectional and woven product forms). These multiscale material models require input data from a minimum of experimental tests, which are then used to characterize a multiscale material model that can be used in structural simulations within a variety of commercial finite element solvers, including OptiStruct, RADIOSS, Abaqus, and LS-Dyna. Using these models, it is possible is to predict the performance of layups from single layer properties, as well as performance of these composites under complex loadings. We present a framework where the required experimental data are collected, including a process for maintaining traceability and consistency of the experimental data using the Matereality software. Experimental test data are transmitted to the HyperWorks Multiscale Designer software for development of an appropriate multiscale material model. The resulting multiscale material model data is stored within Matereality linked to the source experimental data. Different manufactured layups are tested and compared to simulation in a validation step which provides a measure of the solution accuracy.

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AbaqusAltair RADIOSSCompositesLS-DYNAMechanicalNonlinear Material ModelsOptiStructStructural AnalysisValidation

The Role of Material Data in the Simulation of Injection Molded Parts

by DatapointLabs7,476 views

The modeling of material behavior for injection molded plastics is a vital step for good simulation results. We detail the types of material data needed by various injection-molding simulation programs, factors that can affect simulation quality including test techniques and process variables such as moisture content. The case of fiber filled plastics is covered along with the extension to structural analysis applications.

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AbaqusDIGIMATInjection MoldingLS-DYNAMoldex3DMoldflowNonlinear Material ModelsPlasticsPresentationsRate DependencySIGMASOFTSimpoe-MoldStructural AnalysisUniversal MoldingValidationViscoelastic

The Role of Materials in Simulation-Driven Product Development

by Hubert Lobo6,142 views

DatapointLabs Technical Center for Materials has a mission to strengthen the materials core of manufacturing enterprises by facilitating the use of new materials, novel manufacturing processes, and simulation-based product development. A whole-process approach is needed to address the role of materials in this context.

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3D PrintingANSYSHyperelasticMaterealityMaterials Information ManagementMechanicalMetalsNonlinear Material ModelsPlasticsRubbersStructural AnalysisValidation

Insights into the Simulation of Failure of Ductile Plastics

by DatapointLabs6,390 views

Performing simulations that can approximate the material behavior of ductile plastics is daunting. Factors such as nonlinear elasticity, inclusion of volumetric and deviatoric behavior, finding and correctly applying the proper material data to create failure criteria are only a few hurdles. A variety of material models exist, each with numerous settings and varied parameter conversion methods. Combined, these cause a great deal of uncertainty for the FEA user. In previous papers, we delved into material models for both LS-DYNA (MAT089, MAT024, and MAT187) and ABAQUS (*ELASTIC, *PLASTIC) using mid-stage validation as a technique to probe solver accuracy. In this presentation, we summarize our findings on the benefits of this combined approach as a general tool to test and tune simulations for greater reliability.

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AutomotiveHigh Speed TestingMechanicalNonlinear Material ModelsPlasticsPresentationsStructural AnalysisUniversal CrashValidation

Progress on the Validation of Simulation for Ductile Polymers

by Hubert Lobo6,348 views

We will focus on our work related to the testing, modeling and validation of simulation for crash and durability applications, including testing techniques, software tools for material parameter conversion, and the use of a mid-stage validation process that uses standardized experiments to check the accuracy of the simulation prior to use in real-life applications. In addition, we present a short introduction to the Knowmats initiative which seeks to collect posts and links to papers from industry experts as a reference for simulation professionals.

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AutomotiveHigh Speed TestingMechanicalNonlinear Material ModelsPlasticsPresentationsStructural AnalysisUniversal CrashValidation

Determination and Use of Material Properties for Finite Element Analysis: Book Review

by DatapointLabs9,870 views

This book is intended to be a companion to the NAFEMS book, "An Introduction to the Use of Material Models in FE". It informs Finite Element Analysis users of the manner and methodologies by which materials are tested in order to calibrate material models currently implemented in various FEA programs. While the authors seek first to satisfy the basic material models outlined in the companion book, they make important extensions to FEA used in currently active areas including explicit simulation.

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ANSYSAbaqusAerospace and DefenseAltair RADIOSSAutomotiveBiomedicalBook ReviewBuilding MaterialsCAE Vendor/SupplierConsumer ProductsDIGIMATEnergy and PetroleumFoamsFurnitureHigh Speed TestingHome AppliancesHyperelasticIndustrial GoodsLS-DYNAMSC.DYTRANMSC.MARCMSC.NASTRANMaterial SupplierMechanicalMetalsNX NastranNonlinear Material ModelsPAM-COMFORTPAM-CRASHPackagingPlasticityPlasticsRate DependencyResearch LaboratoryRubbersSIMULIASOLIDWORKSStructural AnalysisViscoelasticYielding/Failure Analysis