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Knowmats is an informal repository of information related to materials and simulation. The information helps simulation professionals perform best-in-class simulation with a better understanding of how materials are represented in FEA and simulation. read more...

Applying Digital Image Correlation Methods to SAMP-1 Characterization 

SAMP-1 is a complex material model designed to capture non-Mises yield and localization behavior in plastics. To perform well, it is highly dependent on accurate post-yield material data. A number of assumptions and approximations are currently used to translate measured stress-strain data into the material parameters related to these inputs. In this paper, we look at the use of direct localized strain measurements using digital image correlation (DIC) as a way to more directly extract the required data needed for SAMP-1. full post

Plastics Nonlinear Material Models Structural Analysis LS-DYNA Composites Research Papers

Datapoint Newsletter: Fall '12, Volume 18.4

Inc. Magazine Features DatapointLabs. Book Release. Catalog Updates. full post


Datapoint Newsletter: Summer '12, Volume 18.3

Catalog Updates. New Digital Image Correlation Capability. full post


Pre-processor Software for Calibration of LS-DYNA® Material Models

LS-DYNA contains a wealth of material models that allow for the simulation of transient phenomena. These models are often quite complex and difficult to calibrate. We present CAE Modeler, a generalized pre-processor software used to convert material property data into material parameters for different material models used in CAE. In this paper, CAE Modeler is used to streamline the conversion of rate dependent stress-strain data into material parameters for the MAT_024 material model. The interactive software is capable of handling all three rate dependency options of MAT_024 and outputs a data file that can be read directly into LS-DYNA. Support for other material models is envisaged. full post

Rate Dependency Nonlinear Material Models Structural Analysis LS-DYNA Papers

Datapoint Newsletter: Spring '12, Volume 18.2

Technical Note: On the Conditioning of Plastics Prior to Testing. Expansion of Conditioning Capabilities. full post


Datapoint Newsletter: Winter '12, Volume 18.1

Expanded Mechanical Test Capabilities. full post

Mechanical Rubbers Newsletters

Datapoint Newsletter: Fall '11, Volume 17.3

Expansion: New Lab Space, New TestPaks. DIGIMAT MX Reverse Engineering Update. full post

Mechanical DIGIMAT PAM-COMFORT Newsletters

Datapoint Newsletter: Summer '11, Volume 17.2

New Lab Space & Equipment full post

Mechanical Newsletters

Material Parameter Calibration Services for Abaqus Non-Linear Material Models

DatapointLabs' TestPaks (material testing + model calibration + Abaqus input decks) for rate-dependent, hyperelastic, viscoelastic, NVH, and the use of Abaqus CAE Modeler to transform raw data into material cards will be presented. A representative from Idiada will present a case study explaining the use of DatapointLabs’ material data and TestPaks for simulation. full post

Plastics Rubbers Foams Metals High Speed Testing Nonlinear Material Models Structural Analysis Abaqus Composites SIMULIA Presentations

Datapoint Newsletter: Spring '11, Volume 17.1

New TestPaks and Partner Updates. International Resellers. full post

Moldex3D PolyXtrue VEL Newsletters