Technical papers

SEA Modeling And Validation Of A Truck Cab For Sound Package Optimization

Consumers and regulations drive the noise requirements to levels constantly decreasing. For vehicles, noise control strategies include the application of noise control treatments on the vibrating panels. The definition…

A robust spot weld model for structural vibration analysis

A finite element spot weld is proposed. The model is only weakly sensitive to element size, in contrast to some existing models, for which predictions of the static and dynamic responses can be strongly sensitive to the…

Fully trimmed vehicle models with poroelastic finite element method, modelling technics

The automotive industry is currently expressing a strong need to understand more into details the influence of the trim parts on the acoustic response in the vehicle in the case of structureborne or airborne excitations…

Numerical simulation and experimental validation of guided ditching tests

The oblique water entry of structures with high horizontal speed is investigated in this work. First, the necessity of aircraft ditching analysis as well as the requirements for numerical tools to simulate aircraft…

Design Loads and Random Vibration Specifications for Spacecraft instruments

After a first estimation based on statistics, the design loads for instruments are generally estimated by coupled spacecraft/instrument sine analysis once an FE-model of the spacecraft is available. When the design…

Predicting SC Acoustic Tests Using the Boundary Element Method

This paper focuses on how to effectively predict random acceleration spectra experienced during spacecraft (S/C) acoustic qualification tests representing the acoustic environment at launch by using a fully coupled…

Acoustic Test Prediction and Correlation for the SGEO Satellite Platform STM Model

Spacecraft structural designs have to be designed and verified for a number of mechanical environments, namely:

• Quasi-static loads
• Sinusoidal vibration
• Acoustic Noise
• Shock…
  Vibro-Acoustics

Advancements of Virtual Prototyping in the World of Demanding Regulations

Regulations in safety and fuel efficiency are putting more and more pressure on the Automotive Industry to move towards lightweight solutions. Consequently, innovative research and a 3G engineering approach (gage, grade…

Effects of Manufacturing Process in Crash Simulations

This article describes an impact of a manufacturing, which can significantly change real parts behavior. The influence of technology process is neglected in regular simulations. However, advanced finite elements solvers…

Collaborative development of finite element models for Honeycomb crash test barriers: Crash / Volkswagen

Deformable barriers used in car crash testing are based on aluminium honeycomb blocks covered by aluminium plates. These structures, that largely deform and tear during crash tests, represent a challenge for the…