Industrial Goods

Material Insights by Industry Segment

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

June 3, 2016by 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.

Read full post

A Robust Methodology to Calibrate Crash Material Models for Polymers

May 11, 2009by DatapointLabs6,875 views

High strain rate material modelling of polymers for use in crash and drop testing has been plagued by a number of problems. These include poor quality and noisy data, material models unsuited to polymer behaviour and unclear material model calibration guidelines. The modelling of polymers is thus a risky proposition with a highly variable success rate. In previous work, we tackled each of the above problems individually. In this paper, we summarize and then proceed to present a material modelling strategy that can be applied for a wide variety of polymers.

Read full post

ANSYS Abaqus Aerospace and Defense Altair RADIOSS Automotive Consumer Products High Speed Testing Home Appliances Industrial Goods LS-DYNA MSC.DYTRAN Material Supplier Mechanical Nonlinear Material Models PAM-CRASH Packaging Plastics Research Papers Structural Analysis

Material Modeling Strategies for Crash and Drop Test Simulation

November 27, 2007by DatapointLabs6,280 views

Many LS-DYNA models are used for plastics crash simulation. However, common models are not designed for plastics. We present best practices developed for adapting common models to plastics, as well as best testing protocols to generate clean, accurate rate-dependent data.

Read full post

ANSYS Abaqus Aerospace and Defense Automotive Consumer Products High Speed Testing Industrial Goods LS-DYNA MSC.DYTRAN Material Supplier Metals Nonlinear Material Models PAM-CRASH Packaging Presentations Structural Analysis

Material Modeling and Mold Analysis

May 16, 2008by 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 Defense Automotive Biomedical Blow Molding CAE Vendor/Supplier Composites Consumer Products Electonics/Electrical Energy and Petroleum Extrusion Foams Gels Home Appliances Industrial Goods Injection Molding Metals Moldflow Nonlinear Material Models Oils/Lubricants Packaging Plastics Presentations Rubbers Waxes

Methodology for Selection of Material Models for Plastics Impact Simulation

September 21, 2006by 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.

Read full post

ANSYS Abaqus Aerospace and Defense Altair RADIOSS Automotive Consumer Products Industrial Goods LS-DYNA Material Supplier Nonlinear Material Models PAM-CRASH Packaging Plastics Research Papers Structural Analysis

Providing an Experimental Basis in Support of FEA

April 30, 2014by DatapointLabs5,865 views

The use of CAE in design decision-making has created a need for proven simulation accuracy. The two areas where simulation touches the ground are with material data and experimental verification and validation (V&V). Precise, well designed and quantitative experiments are key to ensure that the simulation initiates with correct material behavior. Similar validation experiments are needed to verify simulation and manage the risk associated with this predictive technology.

Read full post

Abaqus Automotive Biomedical Building Materials CAE Vendor/Supplier Composites Consumer Products Electonics/Electrical Energy and Petroleum Foams Industrial Goods Material Supplier Metals Mold Maker/Designer Nonlinear Material Models Plastics Presentations Rubbers SIMULIA Structural Analysis Toys/Sporting Goods

The Use of Digital Image Correlation (DIC) and Strain Gauges to Validate Simulation

February 13, 2014by DatapointLabs5,829 views

As part of Cornell University's mechanical engineering curriculum and study of classical beam theory, an aluminium beam is deformed to a specific load. Theoretical strains are calculated at certain points along the beam using beam theory, and then verified by using strain gauges placed at these points on the beam. This experiment is then extended to simulation of the same test setup in simulation software, where strains are analyzed at the same points. Discrepancies between the simulation, theory, and strain gauge results have often plagued the test, especially when incorporating more complex beam design. Through use of digital image correlation (DIC) it is possible to pinpoint some of the problem areas in the beam analysis and provide a better understanding of the localized strains that occur at any point in the deformed beam. The use of DIC provides a full field validation of simulation data, rather than a single spot check that strain gauges can provide. This validation technique helps to eliminate error that is associated with strain gauge placement and the possibility of missing strain hot spots that can arise when analyzing complex deformations or geometries.

Read full post

ANSYS Aerospace and Defense Automotive Biomedical Building Materials CAE Vendor/Supplier Consumer Products Electonics/Electrical Industrial Goods Material Supplier Metals Mold Maker/Designer Plastics Presentations Structural Analysis Toys/Sporting Goods

Understanding and Coping with Material Modeling Limitations in FEA

July 21, 2010by 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 Defense Automotive Biomedical Consumer Products Electonics/Electrical Foams Home Appliances Industrial Goods Material Supplier Packaging Plastics Presentations Rubbers Toys/Sporting Goods

Characterization of Damage in Hyperelastic Materials Using Standard Test Methods and Abaqus

June 12, 2009by DatapointLabs5,771 views

Over the past couple of decades, standard test methods and material models have existed for rubber-like materials. These materials were classified under the category of Hyperelastic materials. Well established physical test methods and computational procedures exist for the characterization of the material behavior in tension, compression, shear volumetric response, tear strength etc. However, effective modeling of the fracture behavior of hyperelastic materials using finite element techniques is very challenging. In this paper, we make an attempt to demonstrate the use of such standard test methods and the applicability of such test data for performing finite element analyses of complex nonlinear problems using Abaqus. Our goal is to demonstrate the effective use of standard physical test data to model multi-axial loading situations and fracture of hyperelastic materials through tear tests and indentation test simulations.

Read full post

Abaqus Industrial Goods Material Supplier Nonlinear Material Models Research Papers Rubbers Structural Analysis

Simulating Plastics in Drop and Crash Tests

July 17, 2008by 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

ANSYS Abaqus Aerospace and Defense Altair RADIOSS Automotive Biomedical Consumer Products High Speed Testing Industrial Goods LS-DYNA MSC.DYTRAN Material Supplier Nonlinear Material Models PAM-CRASH Packaging Plastics Research Papers Structural Analysis Toys/Sporting Goods