October 28, 2014 | by DatapointLabs | views 5893
It has long been desired to quantify the accuracy of simulation results. Through developments in digital image correlation (DIC) techniques, it is now possible to quantify the deviation between simulation and real life experimentation. In this paper, three-dimension DIC measurements of deformed parts are compared to deformed surfaces predicted in simulation. Using DIC, it is possible to import deformed surface elements from simulation and map the magnitude of deviation from the measurements of the actual deformed shape.
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High Speed Testing
Nonlinear Material Models
Structural Analysis
ANSYS
Presentations
Validation
October 04, 2016 | by DatapointLabs | views 5886
Finite element analysis of plastics contains assumptions and uncertainties that can affect simulation accuracy. It is useful to quantify these effects prior to using simulation for real-life applications. A mid-stage validation uses a controlled physical test on a standardized part to compare results from simulation to physical experiment. These validations do not use real-life parts but carefully designed geometries that probe the accuracy of the simulation; the geometries themselves can be tested with boundary conditions that can be simulated correctly. In one study, a quasi-static three-point bending experiment of a standardized parallel ribbed plate is performed and simulated, using Abaqus. A comparison of the strain fields resulting from the complex stress state on the face of the ribs obtained by digital image correlation (DIC) vs. simulation is used to quantify the simulation's fidelity. In a second study, a dynamic dart impact experiment is validated using LS-Dyna probing the multi-axial deformation of a polypropylene until failure.
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Mechanical
Plastics
Automotive
Structural Analysis
LS-DYNA
Abaqus
Presentations
Validation
August 09, 2012 | by Datapoint Newsletters | views 5864
Inc. Magazine Features DatapointLabs. Book Release. Catalog Updates.
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Newsletters
March 20, 2015 | by Datapoint Newsletters | views 5861
DatapointLabs Celebrates 20 Years of Putting Materials into Product Design, Very High Strain-Rate Tensile Testing Up to 1000 /s, New Long Term Stress Relaxation Capability, Expanded Creep Testing Capacity
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Newsletters
July 28, 2015 | by Paul Du Bois | views 5833
FAA William J Huges Technical Center (NJ) conducts a research project to simulate failure in aeroengines and fuselages, main purpose is blade-out containment studies. This involved the implementation in LS-DYNA of a tabulated generalisation of the Johnson-Cook material law with regularisation to accommodate simulation of ductile materials.
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Mechanical
Metals
Rate Dependency
Yielding/Failure Analysis
Aerospace and Defense
Automotive
High Speed Testing
LS-DYNA
Presentations
Validation
June 14, 2017 | by Hubert Lobo | views 5810
DatapointLabs Technical Center for Materials has a mission to strengthen the materials core of manufacturing enterprises by facilitating the use of new materials, novel manufacturing processes, and simulation-based product development. A whole-process approach is needed to address the role of materials in this context.
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Mechanical
Plastics
Rubbers
Metals
Hyperelastic
Nonlinear Material Models
Structural Analysis
ANSYS
Validation
3D Printing
Matereality
Materials Information Management
July 14, 2011 | by Datapoint Newsletters | views 5805
New Lab Space & Equipment
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Mechanical
Newsletters
September 15, 2011 | by Datapoint Newsletters | views 5794
Expansion: New Lab Space, New TestPaks. DIGIMAT MX Reverse Engineering Update.
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Mechanical
DIGIMAT
PAM-COMFORT
Newsletters
February 05, 2018 | by DatapointLabs | views 5793
This booklet is intended to be a guide to the V&V process.
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Book Review
Validation
July 14, 1993 | by DatapointLabs | views 5791
The primary purpose of this book is to describe the application of modern engineering analysis techniques to the design of components fabricated from thermoplastic materials. The book, the first of its kind to address the unique behavioral characteristics of thermoplastics and their impact on finite element analysis (FEA), points out the need for plastics designers to move on to nonlinear analysis in order to truly simulate the behavior of plastic parts. According to the authors, the easy availability of high speed computing and efficient analysis codes means that it is no longer necessary nor cost-effective to restrict oneself to simple linear analyses.
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Plastics
Nonlinear Material Models
Structural Analysis
Thermoforming
Book Review
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