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"High Standard Solutions for the Virtual Product Development Process in Power Transmission Engineering"



SIMDRIVE 3D Enhancements

3D Elements, Animation, Controller / Mechatronics

MBSD Software, links up the most important methods for the analysis of dynamics and NVH of Powertrains and Drive systems in the time and frequency domain.

3D Elements


The 3D Elements module provides a powerful tool for coupled flexural and torsional vibrations of crank trains and the entire driving shafts with elastic or hydrodynamic journal bearings. Furthermore, it offers the possibility for whirling analysis of the critical flexural bending rotary speed in time domain. The eigenmodes of a complete structure can be displayed in a 6 DOF animation.

Interactive creation of flexible bodies with spatial flexible beam structures (3D beam elements for driving shafts)
Combination of 3D elements and 1D elements in one simulation model
Defining transverse drives to model the differential gear unit


Structural Analysis


For advanced structural analysis the two moduls, flexible body and modal calculation, complete the modern methods of simulation of multi dimensional MBSD and structural analysis.

The possibility to load reduced FE structures and combine them with multi body simulation leads to an enhanced modeling process, which then combined with a modal reduced calculation method additionally reduces simulation time.


The modal analysis is an independent analytical method, which is directly embedded
in SIMDRIVE3D.


The output periphery of the modal analysis also covers the analysis of coupled structures
A comfortable manual assignment of modal masses and 3D-masses
Possibility of additional modal degrees of freedom (nodes), which are not connected to the housing, for oscillation analysis
Complete system with modular assembly, e.g. 3D-Crankshaft, elastic housing aggregate bearing


Temperature Calculation


The new SIMDRIVE3D Thermo-Element allows the coupling of thermal and mechanical real time simulation for components with high temperature dependency, e.g. rubber dampers.

It calculates the 2D heat flow within rotationally symmetric structures.
This module also comprises the features of the SIMDRIVE3D sketcher tool, which facilitates a fast and easy way to set up models/assemblies for thermal analysis.


Prediction of damper heating and temperature distribution
Considers the thermal influence on rubber parameters in mechanical models
Dissipated energy is defined as heat source
Different boundary conditions for heat flow on the outside borders of the analyzed structure
Reference points for temperature comparison to measurement results



Animation


The Animation module is a tool, that enables the user to create animations and visualizations of simulation results in 2D and 3D. Moreover, it can be used to simplify the system analysis as well as freshen up presentations.

Enhanced display options, such as: forces, tension and hubloads for an easy optical system analysis
Additional display of simulation results within the 3D / 2D animation
Custom camera motion paths offer dynamic perspectives and appealing presentations



Global Interface


Allows setting up controlled systems, e.g. for idle speed control or CBC but also for active tensioners and further mechanisms. Setup of engine models with a control structure comparable to a real engines with an interpolation of the engine pressure.

All simulation parameters can be defined as a controlled reference variable
The sensor concept allows to choose between different methods for the determination of the regulation variable

All elements of the control systems are implemented modular and strongly object oriented
Considering the influence of the control unit to the dynamic behavior of the driveline


Vehicle Model


The Basic Vehicle Model offers dynamic simulations of drive trains in consideration of the vehicle-drivetrain-interaction. The Vehicle Module includes the typical behavior of a vehicle regarding longitudinal dynamics, such as:

Dynamic change of wheel load regarding physical and geometrical properties of the vehicle
Driving resistance according to vehicle speed including rolling resistance, air resistance and climbing resistance
Basic tire contact model with parametric characteristics to include slip and damping properties of the tire contact











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