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Improvements to LS-DYNA Implicit
LSTC is continually improving the capabilities and performance of Implicit especially in the distributed memory computing environment. This talk will review recent improvements such as (a) removing serial memory restrictions with a ...
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SESSIONS G 5 - 8
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Calculation and validation of material tests with specimens made out of filled elastomers
In deep-drawing dies for steel sheet parts of car bodies huge masses are moved. To prevent vibrations, which occur by sudden acceleration or breaking of those masses, elastomeric tubular dampers are used. The dampers are made out of ...
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SESSIONS G 5 - 8
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Recent updates in LS-DYNA frequency domain solvers
This talk gives a brief review of the recent updates in frequency domain solvers in LS-DYNA. A series of frequency domain solvers have been implemented to LS-DYNA since ls971 R6. They include FRF (Frequency Response Functions), SSD ...
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SESSIONS G 5 - 8
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Model Reduction Techniques for LS-DYNA ALE and Crash Applications
Model Reduction Techniques (MRT) are algebraic approximation solutions allowing for fast (real- time) interpolations (reconstruction) or extrapolations (prediction), based on previously existing DOE-type results, obtained either from ...
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SESSIONS G 1 - 4
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LS-DYNA Air Blast Techniques: Comparisons with Experiments for Close-in Charges
Numerical simulations used to predict events are always challenging. Among the challenges is establishing some basis for confidence in the results when no experimental results exist, i.e. a prediction. While there is no assurance that ...
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SESSIONS G 1 - 4
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Model Based Design of Pressure Profiles for Pyrotechnic Actuator using SPH Method & LS-OPT Solution
The design of Pyrotechnic Pistons is subjected to many unknowns, its methodology sometimes consists of many experiments in a trial & error process. This paper presents the design process of such a device. In this work a model–based ...
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SESSIONS G 1 - 4
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An Advanced Identification Procedure for Material Model Parameters based on Image Analysis
Inverse methods for the material strength model calibration are widespread techniques, which allow taking into account for the actual strain, strain-rate, temperature and triaxiality fields inside the specimen. An optimization ...
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SESSIONS G 1 - 4
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Simulation des Kreissägeprozesses
Spanende Prozesse sind durch sehr hohe Dynamik und Verformungszuständen gekennzeichnet. Mit Hilfe der Simulationstechnologie sind bereits verschiedene Zerspanungsprozesse mit guten Ergebnissen analysiert worden. Obwohl sich ...
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SESSIONS G 1 - 4
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The Influence of Johnson-Cook Parameters on SPH modeling of Orthogonal Cutting of AISI 316L
Over the past few decades, there has been a growing interest in modelling of machining processes. In this regard, smoothed particle hydrodynamics (SPH) is one of the latest methods used for that purpose. SPH is a powerful technique ...
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SESSIONS G 1 - 4
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Non-Structural Mass Modeling in Aircraft Impact Analysis using Smooth Particle Hydrodynamics
The non-structural mass in the large commercial airliners includes fuel, cargo, passengers, luggage, seats, lockers, etc. The straightforward approach for modelling of this non-structural mass is to include it as additional mass ...
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SESSIONS G 1 - 4