Datapoint Newsletter: Summer 2025, Vol. 31.2
Applus+ DatapointLabs staff celebrates 30th anniversary; expanded support for thermoset materials; 2025 events
Read full postMaterial Testing for SIGMASOFT
Material characterization considerations for SIGMASOFT simulations using thermoplastic and thermoset materials.
Read full postDatapoint Newsletter: Summer 2021, Vol. 27.2
DatapointLabs Poised for Growth after Move
Read full postDatapoint Newsletter: Summer '19, Vol. 25.3
New DatapointLabs Website; High Temperature Crash Properties
Read full postDatapoint Newsletter: Fall '17, Volume 23.4
CAETestBench Validation, Universal TestPaks, Matereality Analyzer Enhancement
Read full postWorkshop: Testing, Modeling and Validation for Plastics & Rubber Simulation in ANSYS
Plastics exhibit non-linear viscoelastic behavior followed by a combination of deviatoric and volumetric plastic deformation until failure. Capturing these phenomena correctly in simulation presents a challenge because of limitations in commonly used material models. We follow an approach where we outline the general behavioral phenomena, then prescribe material models for handling different phases of plastics deformation. Edge cases will then be covered to complete the picture. Topics to be addressed include: Using elasto-plasticity; When to use hyperelasticity; Brittle polymers – filled plastics; Failure modes to consider; Criteria for survival; Choosing materials; Spatial non-isotropy from injection molding; Importance of residual stress; Visco-elastic and creep effects; Strain-rate effects for drop test and crash simulations; Fitting material data to FEA material models; The use of mid-stage validation as a tool to confirm the quality of simulation before use in real-life applications.
Read full postThermoplastic Material Testing for Use in SIGMASOFT and the Effect of Moisture on PA 6/6
Thermoplastic materials are one of the largest categories of materials to be injection molded. Moisture-sensitive materials can lead to issues in the molding process. Simulation of the injection molding process requires sophisticated and exact material properties to be measured. This presentation discusses the testing required to characterize a thermoplastic material for use in SIGMASOFT, as well as the effects of moisture on viscosity measurement of a moisture-sensitive material. Consequences of basing designs on wet or dry materials are covered. Implementation of material data into the software to produce a successful injection molding simulation simulation is described.
Read full postSPE Newsletter - Summer '15
Molding Views, brought to you by the Injection Molding Division of the Society of Plastics Engineers
Read full postMold Tempering: Conformal Cooling - yes or no?
The tempering layout for injection molds is often designed departing from previous experiences. The manufacturing feasibility is the main driver when deciding where to place cooling lines. However, often the relevance of the tempering in the process profitability or in the part quality is underestimated, and due to the lack of better information sometimes the resulting tempering performs far from the optimum. As a consequence, the molding efficiency is reduced, the part quality is compromised and, once the mold is already built, sometimes expensive trial-and-error is required to bring the mold to an optimum configuration.
Read full postEjection system design: Optimization with SIGMASOFT Virtual Molding
As the demand for functional integration and the need of design differentiation in manufactured products increase, the complexity of plastic parts increases as well; thus some previous knowledge on effective ejection systems becomes insufficient and the challenges in the design of ejection systems grow consistently.
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