13th European LS-DYNA Conference 2021

New Features for Crash in LS-DYNA R13.0
T. Erhart (DYNAmore)

SMILE – Alternative Input Language for LS-DYNA (and Other Solvers)
B. Näser (BMW Group), D. Friedemann, J. Rademann (HTW Berlin)

Yield Locus Exponent Modelling of Packaging Steel for an Optimized Simulation of Limited Dome Height Experiments
F. Knieps, I. Moldovan, B. Liebscher, M. Köhl (thyssenkrupp), M. Merklein (IMT)

An Experimental and Numerical Investigation on Vulcanized Fiber
K. Bayram, M. Pfeiffer, C. Alter, Prof. S. Kolling (THM)

Neural network representation of mechanical fasteners in large-scale analyses
V. André, D. Morin, M. Costas, M. Langseth (NTNU)

PCA-based sensitivity analysis of response fields using LS-OPT
C. Keisser (DYNAmore France), M. Hübner, T. Graf (DYNAmore), A. Basudhar, N. Stander (Ansys/LST)

A gray-scale mapping method to consider locally varying properties for wood forming simulations
C. Liebold (DYNAmore), D. Zerbst (German Aerospace Center), T. Gereke (TU Dresden), S. Clauß (Mercedes Benz)

Occupant Safety Simulations – Dummy Models

H. Sharma (DYNAmore)

This workshop is a compact version of the original occupant protection introductory course from DYNAmore, which usually covers a variety of topics ranging from dummy models to seatbelt system to airbag modelling. However, this workshop focuses on to give a very brief overview of the most crucial aspect of an occupant safety simulation, which is – dummy models and their positioning in a crash simulation model.

The focus is particularly on the modelling techniques and the practical applications of a dummy model. The workshop is mainly aimed at beginners who want to carry out simulations in the field of occupant protection (especially for side, front, or rear crashes) with LS-DYNA. In this workshop, participants will learn the basics of dummy model design and construction, positioning using a pre-processor like PRIMER and a subsequent pre-simulation in LS-DYNA. Initial knowledge of PRIMER and LS-DYNA program is suggested, but not necessary.

This workshop addresses following topics:

• Dummy model design and development
• Overview of a variety of dummy models – front, side, and rear crash
• Dummy model manufacturers and their latest models on the market
• Available dummy models in LS-DYNA
• Structure of a dummy model
• Positioning and pre-simulation of a dummy model
• Summary

Modelling Laminated Glass in LS-DYNA under extreme loading conditions
M. Tatarsky, D. Aggromito, J. Farley, J. Klimenko, W. Wholey,
L. Pascoe (Arup)

Gradient enhanced damage: modelling, implementation and applications
H. Schmidt (Bertrandt), Prof. A. Matzenmiller, M. Nahrmann (University of Kassel)

Latest Development of the advanced Pedestrian Legform Impactor CAE Model
C. Kleessen, C. Shah (Humanetics)

Enabling Interoperability for LS-DYNA Users with Envyo® using the VMAP Standard
C. Liebold, T. Usta (DYNAmore)

Simulation of Hot Rolling using LS-DYNA
M. Schill, J. Karlsson (DYNAmore Nordic), H. Magnusson, F. Huyan (Swerim), N. Safara Nosar, Jonas Lagergren, T. Narström (SSAB)

Characterization of fragments induced by High Velocity Impacts and satellite additional shielding protective structures evaluation
T. Legaud, V. Lapoujade (DynaS+)

Virtual Tool Commissioning using LS-DYNA Functional Mock-up Interface
S. Heiland, L. Penter, S. Ihlenfeldt (TU Dresden), L. Klingel, F. Jaensch, A.Verl (University of Stuttgart), C. Schenke (Fraunhofer IWU)

Roll forming simulation using higher order NURBS-based Finite Elements
P. Glay (DYNAmore France), S. Hartmann (DYNAmore)

Predictive Engineering Using Dfss Of IBM Power9 System
A. Alfoqaha, K. O’Connell, E. Campbell, M. Hamid (IBM)

Simulation Data Management with SCALE.sdm

G. Geißler, M. Liebscher, M. Thiele (SCALE)

The workshop gives an overview of the simulation data management environment SCALE.sdm. The framework consists of three modules:

--SCALE.project: Project administration, milestones, requirements, responsibilities, targets, approval,...

--SCALE.model: Model setup (CAD, mesh, simulation), version management, load cases, HPC-submit, documentation, collaboration,...

--SCALE.result: Evaluation of test and simulation results, assessment, reports, correlation, data analysis,...

The modules are known under the former names Status.E, LoCo and CAViT.

There will be a discussion on how to benefit from SCALE solutions from the perspective of a user and from the perspective of a project manager. Examples of typical CAE workflows and processes with SCALE.sdm are introduced within live demos. A lively discussion at the end of the workshop is very welcome to investigate a potential integration of SCALE.sdm software in your environment.

Vortex: A new structural optimisation solver for lightweight holistic automotive design
D. Russell (Vortex Engineering), N. Kalargeros (Jaguar Land Rover)

Modelling of fracture initiation and post-fracture behaviour of head impact on car windshields
K. Osnes (NTNU), S. Kreissl, J. D’Haen (BMW Group), T. Børvik (NTNU)

Coupling feedback control loop-based model in Simulink to finite element model in LS-Dyna: Application to reposition forward leaning occupant to upright posture
A. Soni, S. Schilling, H.Hinrichs, C. Verheyen, M. Grikschat, B. Eickhoff, A. Lucht, A. Cirstea (Autoliv)

On the prediction of process-dependent material properties for Ti-6Al-4V with LS-DYNA
T. Klöppel (DYNAmore)

Real Time Biofidelic positioning of Human Models with ANSA
L. Rorris, A. Lioras (BETA CAE Systems)

FE analysis and parameter optimisation of anisotropic material models for metals using Full-Field Calibration
J. Jung, W. Rimkus, S. Mouchtar, J. Schlosser, M. Schmiedt (Hochschule Aalen)

Isogeometric Analysis in LS-DYNA R13 – key steps towards industrial applications
S. Hartmann, L. Leidinger (DYNAmore), D. Benson, A. Nagy, M. Pigazzini, L. Li, L. Nguyen (Ansys/LST)

Adaptation of a solid self-piercing rivet made of aluminum using numerical simulation to extend the application limits
M. Schlicht, T. Nehls, P. Froitzheim, Prof. W. Flügge (Fraunhofer IGP)

Hybrid IGA/FEA vehicle crash simulations with trimmed NURBS-based shells in LS-DYNA
L. Leidinger, S. Hartmann (DYNAmore), D. Benson, A. Nagy (ANSYS/LST) L. Rorris, I. Chalkidis (BETA CAE Systems), F. Bauer (BMW Group)

Dynaform 6.2 - New features and enhancements
J. Chen (eta)

Calibration of Six Constitutive Material Models for Geomaterial
R. Nasouri (University of Texas), H. Rokhy (Amir Kabir University), A. Matamoros, A Montaya (University of Texas), R. Backzadeh (Urmia University)

Analyzing bicycle accidents with human body models
V. Alvarez (Lightness by Design), H. Wendelrup (Hövding), K. Brolin (Lightness by Design)

Numerical and experimental investigations of thick-wall composite hydrogen tanks
M. Vinot, T. Behling, M. Holzapfel (German Aerospace Center), D. Moncayo (Daimler)

Numerical investigation of the forming behaviour of polymer-metal sheets using fibre reinforced thermoplastic tapes with discontinuous layup
P. Kabala (TU Braunschweig), I. Karb (Compositence), D. Trudel-Boucher (National Research Council Canada), T. Ossowski, K. Dröder, A. Hürkamp (TU Braunschweig)

Using MAT_ADD_INELASTICITY for Modelling of Polymeric Networks
T. Borrvall, F. Bengzon, A. Jonsson (DYNAmore Nordic), M. Lindvall (IKEA)

Oasys Software – PRIMER, D3PLOT, T/HIS, REPORTER & SHELL

Arup

Oasys Suite Workshop – Overview of Latest Features

Developed specifically for LS-DYNA, the Oasys Suite is at the leading edge of pre and post-processing software and is used worldwide by many of the largest LS-DYNA customers. The latest version of the software, Oasys Suite 18.0, has exciting new features and updates to help you power through your workflow and achieve high-quality results.

Key highlights include:

• D3PLOT Viewer – a brand new 3D web viewer to transform the way you review, communicate, and deliver engineering analysis
• New seatbelt creation tools for fully fabric seatbelts
• Further improvements and additions to the pedestrian protection tools
• Creation and management of SPR (Self Piercing Rivet) type connections
• New and improved automatic REPORTER templates, including MPDB
• Easier access to the powerful LS-DYNA implicit analysis solver through a new tool for quick and easy set-up of implicit analyses
• Improved support for human body models

Join us for a session explaining more about some of these new features. Note this session is a recorded presentation however, Oasys team members will be on hand to answer any questions you have about the Oasys Suite.

Modeling and Simulation of Hypervelocity Impacts on Spacecraft in Low Earth Orbit
R. Færgestad, J. K. Holmen, T. Berstad (NTNU) T. Cardone (ESA), K. A. Ford (NASA), T. Børvik (NTNU)

Investigation of process robustness in sheet forming simulation with Dynaform and LS-OPT

M. Merten, K. Liebold (DYNAmore)

This workshop shows the application of the optimization and probabilistic analysis program LS-OPT on the drawing step of a generic fender geometry simulated with LS-DYNA to judge on the robustness and reliability of the model.

Input variables of a typical sheet forming simulation that are subject to uncertainties are alternated automatically within the framework of LS-OPT based on an inherent Monte Carlo approach. Using metamodel approximations as well as classifiers to evaluate statistical results are discussed. The influence of the variation of the input variables on typical sheet forming results is investigated, e.g. thickness reduction and the Formability Index. Alternated parameters were material properties like yield and tensile strength taken from literature.

Battery simulation in the crash load case
S. Rybak (EDAG)

Benchmark as decision support for cloudification: Moving CAE and HPC to the cloud increases quality and efficiency of simulations
C. Woll (GNS Systems)

Transitioning LS-DYNA workloads to the Cloud on the path to Digital Maturity
I. Fernández (Gompute), D. Dorribo (Gompute)

A meta-model based approach to implement variation simulation for sheet metal parts using mesh morphing method
H. Zheng, K. Upadhyay, F. Litwa (Mercedes-Benz), K. Paetzold (University of the German Federal Armed Forces Munich)

Sideways launching process of a ship using the Arbitrary-Lagrangian-Eulerian approach
A. Ulbertus, M. Schöttelndreyer (thyssenkrupp Marine Systems), S. Ehlers (Hamburg University)

Dynaform 6.2 New Features

M. Merten (DYNAmore)

The workshops feature both informative and how-to knowledge
with demonstrations of the latest features from experts.

The aim is to provide the attendees with insights, limits and merits of the topic. It facilitates the understanding by showcasing simple examples that explain the methods. Besides the presentation there will be time for interactions between the presenters and the audience.

Improvement in predictive capability of CAE safety models with emphasis on GISSMO material model, weld rupture (spot/MIG welds) representation and detailed modeling in small overlap crash test simulations
M. Parab, J. Sholingar, E. Stahmer, A. B. Sheshadri (FCA)

Dynamic testing with automated local strain measurement using IMPETUS®
S. Riemelmoser, M. Schwab, M. Rollant (4a engineering)

Truck Frame Optimization Considering Crashworthiness, NVH and Static Responses
H. Dong, J. P. Leiva, B. Watson (OmniQuest), W. Gao, F. Pan (ShareFEA Engineering Technology)