July 11, 2023 | by Pablo Cruz | views 52
This paper describes an engineering process to generate material cards for forefront crashworthiness CAE analysis that properly capture both plastic and fracture behaviour of car body structural metals. The main objective of the paper is to show that advanced plasticity approaches can be used without significantly increasing the complexity of the overall material characterization process. The paper is mainly centred in metals plastic characterization for shell elements although some important relationships with the fracture characterization will be also discussed.
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Metals
Automotive
Structural Analysis
LS-DYNA
May 22, 2023 | by Datapoint Newsletters | views 725
DatapointLabs Founders Retire; Company Continues Focus on Materials in Simulation
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Thermal
Mechanical
Foams
Newsletters
Validation
May 15, 2023 | by DatapointLabs | views 398
Simulations play a crucial role in engineering and material science, and their success heavily relies on the accuracy of input data. Material testing, data conversion, fitting, and formatting are essential steps in the simulation process. This conference will highlight the importance of material testing requirements that extend beyond ISO and ASTM standards to obtain reliable data for input into various common material models, such as Elastic-Plastic, Hyperelastic, and Rate Dependent models. The complexity of foam materials is shown through a case study of successful validation of polyurethane (PU) foam ball drop impact test using LAW 90. PU foams exhibit high deformation with rate dependency in compressive loading, as well as viscoelastic unloading behavior. Proper handling of input test data and critical settings in simulation setup are crucial for accurate results. The case study will showcase our streamlined approach to successful simulation of foam materials, including challenges and limitations of current material models.
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Mechanical
Foams
Hyperelastic
Rate Dependency
RADIOSS
Validation
September 22, 2022 | by DatapointLabs | views 700
Material characterization considerations for SIGMASOFT simulations using thermoplastic and thermoset materials.
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Rheology
Thermal
Mechanical
Plastics
Rubbers
Injection Molding
SIGMASOFT
January 31, 2022 | by Datapoint Newsletters | views 1731
DatapointLabs Achieves Nadcap® Accreditation
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Thermal
Mechanical
Plastics
Composites
Quality
October 05, 2021 | by Pablo Cruz | views 1552
A deep understanding of advanced material plasticity and fracture is one of the cornerstones of mechanical engineering to overcome present and future challenges in the automotive industry with respect to lightweight multi-material body solutions.
The correct material law selection may imply a design lightweight efficiency improvement of between 10% and 20% depending on the material, component geometry, manufacturing technology and performance requirements. The accurate implementation of the plastic behaviour becomes mandatory when material fracture is a central design parameter.
In this paper, the authors propose a clear process to experimentally measure and assess how far uniaxially tested materials are from pure isochoric plastic behaviour. This process will be named Non-isochoric Plasticity Assessment (NPA). In order to illustrate the process, NPA will be applied to actual experimental results of representative automotive metals and thermoplastics.
Material plastic dilation behaviour is studied. A general description is provided regarding plasticity theory concepts required for the usage of non-isochoric plasticity material laws. An approach for the validation of the experimental input data consistency for both SAMP-1 and SAMP-Light material laws is also proposed.
The overall approach is finally applied and validated on an extruded aluminium and a thermoplastic showing a proper level of correlation between CAE and experimental results for shell-based FE-models.
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Plastics
Metals
Automotive
Structural Analysis
LS-DYNA
September 22, 2021 | by Datapoint Newsletters | views 1921
Improving Crash Simulations; Growth in Testing Services after Move
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Mechanical
Plastics
Metals
Automotive
LS-DYNA
Newsletters
June 18, 2021 | by Datapoint Newsletters | views 2331
DatapointLabs Poised for Growth after Move
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Density
Rheology
Thermal
Mechanical
Newsletters
March 08, 2021 | by Datapoint Newsletters | views 2824
DatapointLabs Will Move, Summer '21; Get Your Testing in Now. Partner Showcase: Altair
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High Speed Testing
Structural Analysis
Composites
RADIOSS
Newsletters
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