Datapoint Newsletter: Spring 2021, Vol. 27.1
DatapointLabs Will Move, Summer '21; Get Your Testing in Now. Partner Showcase: Altair
Read full postDatapoint Newsletter: Summer '19, Vol. 25.3
New DatapointLabs Website; High Temperature Crash Properties
Read full postDatapoint Newsletter: Winter '18, Vol. 24.1
Focus on Validation of Simulation: CAETestBench Validation for crash, additive manufacturing, injection molding, rubber hyperelasticity; Review of NAFEMS publication on V&V.
Read full postInsights into the Simulation of Failure of Ductile Plastics
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.
Read full postDatapoint Newsletter: Winter '17, Volume 23.1
New test capabilities, Matereality v10.2, upcoming presentations
Read full postDatapoint Newsletter: Summer '16, Volume 22.3
Support for GISSMO, New Book, SDPD Workflow for Materials
Read full postProgress on the Validation of Simulation for Ductile Polymers
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.
Read full postDamage Modeling under Impact Loading in Talc-Filled Polypropylene Compounds
Topics covered: Damage in mineral filled polypropylene under impact conditions; damage modeling and parameter identification (prior art, LyondellBasell contributions, debate in the CAE community); experimental and numerical validation; next steps
Read full postA Standardized Mechanism to Validate Crash Models for Ductile Plastics
Quantifying simulation accuracy before running crash simulations could be a helpful confidence building measure. This study continues our development of a mechanism to validate material models for plastics used in modeling high-speed impact. Focusing on models for isotropic materials that include options for rate dependency and failure, we explore other models commonly used for ductile plastics including MAT089 and MAT187.
Read full postDetermination and Use of Material Properties for Finite Element Analysis: Book Review
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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