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Entwicklung eines empirischen Modells zur Bestimmung von Ergebnisgrößen aus FEM-Rollfalzprozessen
Roller hemming is an operation used in the construction of vehicle body parts and follows on from deep drawing, trimming and folding the flange to produce a metal-formed joint between the outer skin part and the inner part of vehicle ...
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New Developments in eta/DYNAFORM 5.8
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Formability Index: A New Accurate Approach to Evaluate Material Formability
In sheet metal forming simulation, Forming Limit Diagram (FLD) has long been used to evaluate sheet metal formability. In conventional method, FLD is obtained by assuming linear strain path (Fig.1); while in real production ...
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Simulation of Aluminium Sheet Metal Deep Drawing at Elevated Temperatures using LS-DYNA
A disadvantage of aluminium is that it is less formable than steel. One method for overcoming this disadvantage is deep drawing at elevated temperatures. In this way the formability of aluminium sheet metal can be improved ...
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Planning and Control of Sheet Metal Forming Processes using LS-OPT
Although control parameters of the stamping process are kept constant, remarkable variations in the quality of the stamped parts can be observed during the fabrication of car body parts. This is due to random variations in the ...
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Optimierung eines Verbundsicherheitsglasmodells für Kopfaufprall auf Windschutzscheibe
Laminated glass is used especially for windscreens and sun-roofs in automotive industry. Pedestrian safety and side impact resistance are in focus of the automotive development. For simulation of head impact on windscreen, side and ...
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Development of New Tools for Crash and Safety Analysis - Performance Driven LS-DYNA Simulation with ANSA and META
The increasingly demanding and complex requirements in Crash Analysis, call for continuous and innovative software development. BETA CAE Systems in an effort to meet and exceed the requirements of the industry is introducing new ...
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Extension of GISSMO Damage Model based on Lode Angle Dependence
This paper presents the extension and validation of the damage model GISSMO (Generalized Incremental Stress State dependant damage MOdel). The damage model is extended for 3D usage by utilization of Lode angle parameter. The fracture ...
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Usage of a Rate-Dependent, Elasto-Plastic Cohesive Zone Mixed-Mode Material Model for Spot-weld Modeling
Currently, there are several material models implemented in LS-DYNA which are more or less capable to simulate a spot weld behavior under crash conditions. The material parameters for crash simulations are determined by comparing the ...
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Holistischer Ansatz zur Versagensmodellierung von Schweiß- punkten in der Crashsimulation
A sufficient modelling of spot weld behaviour in full car crash simulations is a fundamental item due to the fact that local joint fracture can make a significant contribution to the overall crash performance. The accurate ...
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