Material Insights by Industry Segment

Biomedical

Sort byDateViews

Mechanical and Visco-Elastic Properties of UHMWPE for In-Vivo Applications 

by DatapointLabs5,980 views

Ultra-high molecular weight polyethylene (UHMWPE) is used extensively in orthopedic applications within the human body. Components made from these materials are subject to complex loading over extended periods of time. Modeling of components used in such applications depends heavily on having material data under in-vivo conditions. We present mechanical and visco-elastic properties measured in saline at 37C. Comparisons to conventionally measured properties at room temperature are made.

Read full post
ANSYSAbaqusBiomedicalBlow MoldingExtrusionInjection MoldingMoldflowNonlinear Material ModelsPOLYFLOW Blow MoldingPOLYFLOW ExtrusionPOLYFLOW ThermoformingPapersPlasticsSIGMASOFTStructural Analysis

Understanding and Coping with Material Modeling Limitations in FEA 

by DatapointLabs5,791 views

The limitations of modeling materials for simulation are discussed, including lack of clarity in material model requirements, gaps between the material data and the model to which it will be fitted, issues in obtaining pertinent properties, difficulties in parameter conversion (fitting), and preparation of input files for the software being used. Means to address these limitations are presented, including understanding the model completely, measuring the correct data with precision on the right material, selecting the best model for the data and ensuring the best fit of the model to the data, validating the model against a simple experiment, and following best practices to create an error-free input file.

Read full post
Aerospace and DefenseAutomotiveBiomedicalConsumer ProductsElectonics/ElectricalFoamsHome AppliancesIndustrial GoodsMaterial SupplierPackagingPlasticsPresentationsRubbersToys/Sporting Goods

Simulating Plastics in Drop and Crash Tests 

by DatapointLabs5,659 views

If you want a crash simulation involving plastics to yield useful results, it is important to model the material behavior appropriately. The high strain rates have a significant effect on the properties, and failure can be ductile or brittle in nature, depending on a number of factors.

Read full post
ANSYSAbaqusAerospace and DefenseAltair RADIOSSAutomotiveBiomedicalConsumer ProductsHigh Speed TestingIndustrial GoodsLS-DYNAMSC.DYTRANMaterial SupplierNonlinear Material ModelsPAM-CRASHPackagingPlasticsResearch PapersStructural AnalysisToys/Sporting Goods

Material Modeling and Mold Analysis 

by DatapointLabs6,247 views

We present a perspective on material modeling as applied to mold analysis requirements. Melt-solid transitions and the case for a unified material model are discussed, along with prediction of post-filling material behavior and shrinkage, and the impact of viscous heating on flow behavior and material degradation.

Read full post
Aerospace and DefenseAutomotiveBiomedicalBlow MoldingCAE Vendor/SupplierCompositesConsumer ProductsElectonics/ElectricalEnergy and PetroleumExtrusionFoamsGelsHome AppliancesIndustrial GoodsInjection MoldingMetalsMoldflowNonlinear Material ModelsOils/LubricantsPackagingPlasticsPresentationsRubbersWaxes

Characterization and Modeling of Non-linear Behavior of Plastics 

by DatapointLabs6,057 views

A considerable amount of CAE today is devoted to the simulation of non-metallic materials, many of which exhibit non-linear behavior. However, most material models to date are still based on metals theory. This places severe restrictions on the proper description of their behavior in CAE. In this paper, we describe non-linear elastic behavior and its interrelationship with plastic behavior in plastics. Special attention is given to the differentiation between visco-elastic (recoverable) strain and plastic (non-recoverable) strain. The goal of this work is to have a material model for plastics that can describe both loading and unloading behavior accurately and provide an accurate measure of damage accumulation during complex loading operations.

Read full post
AbaqusAerospace and DefenseAutomotiveBiomedicalConsumer ProductsHome AppliancesMaterial SupplierNonlinear Material ModelsPackagingPlasticsResearch PapersRubbersStructural AnalysisToys/Sporting Goods

Practical Issues in the Development and Implementation of Hyperelastic Models

by DatapointLabs6,063 views

Hyperelastic models are used extensively in the finite element analysis of rubber and elastomers. These models need to be able to describe elastomeric behavior at large deformations and under different modes of deformation. In order to accomplish this daunting task, material models have been presented that can mathematically describe this behavior [1]. There are several in common use today, notably, the Mooney-Rivlin, Ogden and Arruda Boyce. Each of these has advantages that we will discuss in this article. Further, we will examine the applicability of a particular material model for a given modeling situation.

Read full post
ANSYSAbaqusAerospace and DefenseAutomotiveBiomedicalFoamsMSC.MARCNX NastranNonlinear Material ModelsResearch PapersRubbersSOLIDWORKSStructural Analysis