Technical papers

Vibro-acoustic modelling of aircraft structures using Finite Element- informed Statistical Energy Analysis

Abstract. This paper addresses the problem of predicting the structure borne and airborne sound transmission in aircraft using Statistical Energy Analysis (SEA). Often analytical formulations are used…

Modeling Launch Vehicle Liftoff Acoustics with Ray Tracing

Abstract. Spacecraft vehicles are subject to important external acoustic load during liftoff and when they are operated in the atmosphere. During liftoff, this acoustic load is caused by the engines…

Towards Certification by Simulation with model-based continuous Engineering Processes showcased on eVTOL Application

Abstract. Aerospace industry OEMs and suppliers are progressing their engineering processes and performance to the next maturity level gearing to digital thread solutions. Current challenges like…

Development of a Process to Predict Whole Vehicle Aeroacoustic Interior Noise

Abstract. Quality and refinement are of paramount importance for luxury vehicles. The rapid electrification of the automotive industry has increased the contribution of aeroacoustics to the consumer…

Renault employs ESI QuikCAST to Define Standards for Quality Castings

THE CHALLENGE To define design rules for filling & feeding systems across different product lines to enhance competitiveness and achieve quality casting production. THE STORY Traditional methods in the past had…

Metrological determination of inhomogeneous hydrodynamic compaction during unsaturated out-of-plane permeability measurement of technical textiles

Abstract. An out-of-plane permeability measurement system is presented that initially enables monitoring of inhomogeneous hydrodynamic compaction of textiles during impregnation. For this, it provides…

Learning stable reduced-order models for hybrid twins

Abstract. The concept of “Hybrid Twin” (HT) has recently received a growing interest thanks to the availability of powerful machine learning techniques. This twin concept combines physics-based models…

Daimler: Efficient Torsional Vibration Analysis of Commercial Vehicle Drivetrains Using Script-Controlled SimulationX

A new approach for efficient modeling, simulation control, analysis, and automated post-processing for torsional vibration topics in commercial vehicle drivetrains is presented. The model is built up in SimulationX with…

Optimizing the Architecture of Hoists by Simulation

The normative DIN EN 14492-2:2010-05 „Cranes - Power driven winches and hoists“ was released with some changes in May 2010 after a revision. The revision defines additional requirements for the availability of an…

Getrag Transmission Rattle Noise Prediction

„Transmission Rattle“ is a noise phenomenon of vehicle transmissions and determines significantly the transmission quality with regards to the attribute NVH. It is initiated by the periodic torque fluctuation of…