November 21, 2014 | by DatapointLabs | views 4963
Thermoplastic materials are one of the largest categories of materials to be injection molded. Simulation of the injection molding process requires sophisticated and exact material properties to be measured. This presentation will discuss the testing required to characterize a material for use in SIGMASOFT, as well as the significance of material model parameters. Differences in testing methodology for amorphous and semi-crystalline polymers will be covered, along with step-by-step implementation into the software to produce a successful injection molding simulation simulation.
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Plastics
Electonics/Electrical
Injection Molding
Nonlinear Material Models
Structural Analysis
SIGMASOFT
Presentations
July 22, 2015 | by Paul Du Bois | views 4959
"Simulation of rubber-like materials is usually based on hyperelasticity. If strain-rate dependency has to be
considered viscous dampers are added to the rheological model. A disadvantage of such a description is timeconsuming
parameter identification associated with the damping constants. In this paper, a tabulated formulation is
presented which allows fast generation of input data based on uniaxial static and dynamic tensile tests at different
strain rates. Unloading, i.e. forming of a hysteresis, can also be modeled easily based on a damage formulation. We
show the theoretical background and algorithmic setup of our model which has been implemented in the explicit
solver LS-DYNA [1]-[3]. Apart from purely numerical examples, the validation of a soft and a hard rubber under
loading and subsequent unloading at different strain rates is shown."
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Mechanical
Rubbers
Hyperelastic
Rate Dependency
Yielding/Failure Analysis
Automotive
High Speed Testing
LS-DYNA
Research Papers
June 17, 2008 | by Datapoint Newsletters | views 4939
New Tests and TestPaks. New Presentations On-line.
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LS-DYNA
Altair RADIOSS
VISI Flow
Newsletters
Validation
April 06, 2012 | by Datapoint Newsletters | views 4927
Technical Note: On the Conditioning of Plastics Prior to Testing. Expansion of Conditioning Capabilities.
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Newsletters
July 14, 2011 | by Datapoint Newsletters | views 4919
New Lab Space & Equipment
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Mechanical
Newsletters
September 21, 2006 | by DatapointLabs | views 4895
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.
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Plastics
Aerospace and Defense
Automotive
Consumer Products
Material Supplier
Industrial Goods
Packaging
Nonlinear Material Models
Structural Analysis
LS-DYNA
Abaqus
ANSYS
PAM-CRASH
Altair RADIOSS
Research Papers
September 15, 2011 | by Datapoint Newsletters | views 4894
Expansion: New Lab Space, New TestPaks. DIGIMAT MX Reverse Engineering Update.
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Mechanical
DIGIMAT
PAM-COMFORT
Newsletters
August 24, 2015 | by Sigmasoft | views 4890
The profitability of a molded rubber product depends to a large extent on the mold efficiency. To achieve the maximum productivity, besides the larges possible number of cavities it is desirable to minimize the rubber consumption and to produce parts without defects.
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Rheology
Rubbers
Automotive
Biomedical
Injection Molding
SIGMASOFT
Newsletters
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