Starting with simple modeling of geometry, using rigid bodies and linking the components with plain or roller bearings, gear pairs as well as rotational coupling elements such as couplings or splined shafts, a simulation model can be quickly built.
With the help of the integrated Component Modeler, sophisticated FE models can be seamlessly prepared and flexible components can be created. Fully integrated assemblies, e.g. for planetary gear sets or crank trains, offer an enormous simplification for the creation of complex calculation systems. The interaction of the components can be easily checked with the help of a kinematic calculation and animation. This is followed by the actual simulation. You can choose between fast analyses in the frequency domain or non-linear analyses in the time domain for detailed investigations.
As a user you automatically receive for evaluation: Campbell diagrams for series calculations and a standardized report as PowerPoint or PDF file.
AVL EXCITE™ M
Different gear stages including planetary gear sets as well as e-motor types (PMSM, SCIM, EESM) with controlling and rotor eccentricity can be dynamically mapped and calculated for e-axis systems. In addition to NVH analyses, influences of manufacturing tolerances can also be investigated and optimized with regard to durability and noise.
Tribology
The influence of friction, lubrication and wear under dry and lubricated conditions is essential in many technological fields. With the help of EXCITE you can reduce friction, optimize wear and thus increase the durability of bearings and components and reduce energy consumption.
NVH Simulation
One of EXCITE's core competences is the calculation of structure-borne and airborne noise of powertrain units. Evaluation tools such as Operational Deflection Shape (ODS), Numerical Transfer Path Analysis (NTPA) and Modal Contribution Factors (MCF) give you answers to the causes and sources of excitation and vibration.
3D Piston Ring Simulation
EXCITE Piston & Rings provides a reliable solution for 3D piston ring simulation. With the 3D rings created fully automatically by the ring modeler, the influence of ring deformation on blow-by, friction, wear and lubrication oil consumption can be analyzed. In addition, the bore deformation from an EXCITE piston-liner contact calculation can also be taken into account.
The design of modern wind gears with high power density requires the use of cross-system analysis tools. The use of plain bearings in the planetary gears in particular, results in new requirements for the calculation tools themselves.
With AVL EXCITE™, we are able to simulate the loads on the plain bearings in planetary gears, investigate their interactions with the surrounding structures, and subsequently evaluate their applicability in planetary gearboxes for wind turbines.
– Stefan Schemmert, Head of Validation and Development Eickhoff Antriebstechnik GmbH
At WinGD, EHD simulations with the use of AVL EXCITE™ have been carried out for almost 25 years. Everything started with a series of main bearing failures on a 96C engine where bearing layout was not based on EHD. Thanks to AVL EXCITE™ we were able to find appropriate solutions which were introduced as countermeasures to optimize our products. Since then, AVL EXCITE™ as an advanced multi-body dynamics simulation tool is an integral part of the engine development process, and the EHD calculation results correlate very well with the service experience of our bearings.
– Elzbieta Grüninger, Senior Development Expert Powertrain, Research & Development, Winterthur Gas & Diesel Ltd.
AVL EXCITE™ enables us to make reliable statements on the NVH behavior of combustion engines from the early development phase to the start of production. By jointly considering the excitation from thermodynamics, the transmission behavior of the structure, and the high prediction quality, we can make reliable statements starting from the concept phase. In addition, the analysis of the vibration behavior of the test engines is supported with validated models in the prototype development. This allows us to target our development and ensure that the acoustic goal is achieved.
– Markus Dieterich, Development Engineer Acoustics, AUDI AG
AVL E-Motor Tool™ - Bridge the Gaps in E-Motor Development Workflow
Development processes that rely heavily on simulation have been honed over time for conventional powertrains, but they could also be applied to e-drive development. However, some gaps specifically related to the e-drive development, must be bridged to ensure a smooth development process. This whitepaper demonstrates how the innovative E-Motor Tool supports e-drive development.
The AVL E-Motor Tool™ - Easily Parameterize the E-Motor Emulator for Inverter Testing
E-Motor Emulator is used for the physical testing of the inverter removing the need for a physical e-motor. With AVL E-Motor Tool it is possible to effortlessly design a customized e-motor tailored specifically to your inverter testing needs. The precise set of parameters for this e-motor are provided to the E-motor Emulator in one click.
AVL Customer Case Study - EHD Bearing Simulations on WinGD 2 Stroke Engines
Increased demand to minimize cylinder distance for new twostroke, low-speed marine engine developments, including new engine structure concepts and design-to-cost approach, result in an increased need for EHD calculations of WinGD`s main bearings.
Find out how our multi-body dynamics simulation solution AVL EXCITE™ helped WinGD to successfully deal with this challenge.
AVL White Paper - Predictive Transmission NVH Analysis for ICE Based and Electrified Powertrains
Download our white paper to discover how simulation can be applied to optimize key powertrain NVH attributes, extending classical IC engine NVH to modern powertrains including highly complex transmissions and electrified powertrains.
AVL Customer Case Study - NVH Simulation at Deutz
Legal constraints which impose ever stricter emission limits are forcing engine manufacturers to drastically reduce the sound emission of their products. In addition, increasing end customer expectations require a greater focus on the acoustic behaviour of an engine.
AVL Customer Case Study - System Simulation in BEV Development at EDAG
For battery electric vehicles (BEV), the high-voltage storage unit is the crucial component in terms of performance, efficiency and range. To optimize these attributes extensive investigations are required. Both in the overall vehicle context and under different, sometimes extreme boundary conditions.
Electrified vehicles (EVs) are measured by their performance, range and cost. In addition, a compact powertrain design is desired, which has implications for thermal management.
The nearly silent operation of e-motors makes the vehicles quieter, but results in various noises and vibrations no longer being masked by the engine.
AVL is a leader in the use of simulation in vehicle development. Our simulation solution for combustion engines is used by most engine manufacturers worldwide.
With simulation, we achieve three things in powertrain development: First, we ensure durability for all components - from the crankshaft to the connecting rod and plain bearings to the entire...
Properly considering the excitation of the e-motor is essential when analyzing the NVH of e-drives. Typically, electromagnetic forces on the stator and torque on the rotor are precalculated using electromagnetic tools.
E-drives and hybrid powertrains often operate in transient conditions with changing loads and speeds, and it is essential to consider the dynamic effects of these conditions when evaluating their durability and NVH.
Modern e-axle concepts bring with them new types of design peculiarities. This can result in various disruptive effects. We will show you how special vibration phenomena can be analyzed simulatively early in the development process.
We will give you an insight into how to combine the strengths of statistical design of experiments and intelligent optimization with 3D multibody simulation using the AVL CAMEO™ and AVL EXCITE™ tools.
The elimination of the masking effect caused by the combustion engine and the trend towards high-speed e-axles make the topic of NVH a central aspect in vehicle development. We will present the current state of the art for the dynamic analysis of e-drives.
Due to the elimination of the noise-masking combustion engine, the acoustic phenomena of the transmission come to the fore in electrified vehicle concepts. We present you a workflow for calculating the map of stator tooth forces and torque fluctuations on the rotor.
Renewable energy tops the list of measures to be taken to reduce greenhouse gases in most discussions about climate change. In that respect, wind turbines show enormous potential for the future.
On the path to a clean and carbon-neutral mobility, hybrid vehicles will doubtlessly play a major role for the next decade, especially in the field of passenger cars.
Electrified powertrains are flexible in construction, highly complex and often lightweight, yet they operate at incredibly high torque loads.
The understanding of wear phenomena is relevant for several engineering fields. Basically, every application where force is transferred between directly connected and relatively moving components is prone to wear.
Legislation is pushing automotive propulsion engineers to apply advanced transmission and drivetrain technology while striving towards improving efficiency. The required measures are often negatively impacting the vehicle’s NVH behavior.
In order to satisfy the latest emission legislations, OEMs have to downsize their engines and introduce additional systems which help to reduce the footprint of an ICE vehicle.