Volume 22.4

CAETestBench is a mid-stage validation procedure in which a standardized physical part is created and tested under a rigid protocol that can be accurately reproduced in simulation. Using techniques such as digital image correlation (DIC), it is possible to probe the accuracy of the simulation prior to use in real-life situations. The test cases range from simple tensile modes to more complex multi-axial modes, impact and failure. CAETestBench validations are available for plastics and additively manufactured metals; validations for rubbers are currently under development (see A Mechanism for the Validation of Hyperelastic Materials in ANSYS).

CAETestBench Validations

Test Name	Materials	Application	Software  Material Model	Test ID
Falling Dart Impact Validation	plastics	crash analysis, rate dependency	LS-DYNA MAT_024	V-101
			Abaqus *RATE DEPENDENT	V-102
Ribbed Plaque Flexural Validation	plastics	elasto-plasticity, but not including failure	Abaqus *ELASTIC *PLASTIC	V-150
			ANSYS MISO	V-151
Torsional Crank Validation of Additive Material Models	metals	direct metal laser sintering; part optimization	ANSYS MISO	V-170
			Abaqus *ELASTIC *PLASTIC	V-171
			RADIOSS Law36	V-172

Add a CAETestBench validation when ordering TestPaks^® to gain more confidence in your simulation.

Matereality Version 10.1 is in the final stages of testing before being made available on the Matereality Cloud and for Enterprise MDS installations. New capabilities include tools for importing large amounts of legacy data into your libraries, and additional supported CAE Modeler formats for LS-DYNA.

Updated Import capabilities (Enterprise licenses only)

• Define and classify multiple Materials
• Create multiple material Specifications
• Load single point property data and equation coefficients for multiple Materials
• Enter property limits for multiple material Specifications

Templates for loading property data and specification property limits are user-created with the MIRO Designer app.

New supported CAE formats (Pro licenses only)

• MAT_019
• MAT_024 LCSS
• MAT_024 LCSR
• MAT_089 LCSR

Select these models under LS-DYNA in the CAE Modeler app.

DatapointLabs Technical Center for Materials presented several well-received conference papers this Fall. Presentations focused generally on the topic of “Validate Before You Simulate,” evaluating factors that can affect simulation accuracy. If you missed our presentations at these conferences, find them at any time on Knowmats.com, a curated repository of information related to materials and simulation:

• Testing, Modeling and Validation for Plastics and Rubber Simulation Workshop presented by H. Lobo and B. Croop at the Western PA ANSYS User's Group Fall Meeting, October 21, 2016; Canonsburg, PA
• A Mechanism for the Validation of Hyperelastic Materials in ANSYS, presented by M. Lobdell at CADFEM ANSYS Simulation Conference, October 5, 2016; Nuremberg, Germany
• Using Mid-stage Validation to Increase Confidence in Simulation of TPOs, presented by B. Croop at SPE Automotive TPO Conference, October 4, 2016; Troy, MI USA

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

DatapointLabs founder and CEO, Hubert Lobo, and laboratory director, Brian Croop, have written a book describing the state of the art in material testing for CAE. This book informs simulation users of the manner and methodologies by which materials are tested in order to calibrate material models currently implemented in various FEA programs. It incorporates extensions beyond basic material models to address currently active areas, including explicit simulation.

Find a review of this book on Knowmats.com. It is available for purchase directly from NAFEMS.org.

DatapointLabs Technical Center for Materials | 95 Brown Road #102, Ithaca, NY 14850 USA | T: +1-607-266-0405 | US toll-free: +1-888-DATA-4-CAE | EU: +353 1 442 9204 | info@datapointlabs.com