Multi-Body Dynamics Simulation - SIMPACK · Multi-Body Dynamics Simulation ... Motion path and...

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2014

Multi-Body Dynamics Simulation Wind and Drivetrain Conference 2015

Steve Mulski, SIMPACK GmbH Director Sales & Marketing

Director Wind Energy Solutions

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14 Overview Latest Releases

New Features Simpack

Simpack 9.8

150 new Features

Released April 2nd 2015

Simpack 9.9

134 new Features

Released October 2nd 2015

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14 Shaft Joint

What:

New Joint Type 15 for rotating shafts

Enables easy switching of DoF using

parameters

Retains parameterization of shaft

rotation velocity

Guarantees correct calculation order

Retains order of results in sbr file

New Features Simpack 9.8

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14 Traces for markers and primitives

What:

Traces now available in SIMPACK

Post

Easy visualizing motion behavior


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14 Motion Path Export to CATIA/3DX

What

Motion path and swept volume visualization in CATIA and

3DX (e.g. for collision analysis )

Export via Result Element to VDA file (ASCII CAD Data

Exchange)

Optional write to sbr file


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14 Cylindrical Spring Damper

What:

New force element 185 for simple bushings and

bearings

Axial and Radial

stiffness, damping, clearance and damping transition

velocity

Analog to FE 05, but with cylindrical coordinates


a

r θ

ca

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Y

Z

Y

Z FE 05 FE 185 Clearance with

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14 Rolling Bearing Element

What

Ball bearings (deep groove, angular, thrust, four point)

Cylinder / Needle (radial, thrust)

Taper roller

Analytical approach

Load dependent damping

Module:

Rolling Bearing


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14 (Elasto) Hydrodynamic Bearing

What

Radial and axial

Approximate solution

Analytical fast solution

No deformation considered

Online solution of Reynolds equation

one side (EHD) or double sided (DEHD)

special geometry (grooves, oil bores, crush relief, …)

2D and 3D animated plots / animations (9.9)

Module:

EHD

New Features Simpack 9.8/9.9

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14 Gear Pair Modelling

What:

Different levels of fidelity

Basic Gear Pair (simple and advanced)

Can be used with or without gear primitive parameters

Does not consider meshing excitations

Recommended for linearization tasks

Gear Pair 225

Meshing excitations

Profile and flank micro geometry

Easy switching by activating and deactivating force

elements


• Circumferential forces • Radial and tangential forces

• Dynamic normal

• Dynamic backlash

Simple Advanced

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14 Improvements Gear Pair

What

Significant speed up with flank

modification under low load

Significant accuracy improvements with

spiral bevel gears

Considers variation of helix angle over

contact width

Module:

Gear Pair


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14 Flexible Gear Wheels

What

Import from FEA

Gear wheel deformation

Excitation from flexible bodies

Gearwheel dynamics

Gear tooth misalignments and pitch irregularities

Analytical contact

Module:

Gear Pair


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14 Gear Pair (rigid and flexible)

What

Additional profile and flank

modifications

Bias, Slope and Lead Angular

New damping type

stiffness proportional

Module:

Gear Pair


Bias modification

Slope modification Lead Angular modification

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14 Flexible Spline Coupling

What

Extended to handle flexible bodies

FlexModal and SIMBEAM

Detailed models for damping and

friction

Module:

Spline Coupling

New Features Simpack 9.9 rigid

flexible

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14 Polygonal Contact Method (PCM) Overview

What

General 3D to 3D tessellated contact

Forces based upon an elastic foundation

model with area related damping and

regularized coulomb friction

Rigid and flexible bodies/surfaces

Module:

Contact and FlexContact


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14 Non-standard Gear Wheels

What

PCM contact used for non-standard gear

wheels, e.g. Hypoid gears

Mesh quality important for accuracy and

efficiency


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14 PCM – Geometric Correction of Tessellated Contact Surfaces

What

PCM surface height corrections

The predicted penetration is corrected in

accordance with actual geometric shape

Results in a consistent description of penetration

depth and smooth contact forces

Module:

Contact


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14 Minimum Distance and Collision Detection

What

Minimum distance measurement and collision detection

between multiple arbitrary shapes using FE 197,

GPC (Geometric Primitive Contact)

Visualization and plots

Clearance and safety evaluation

Containing Module(s)

Contact Module


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14 Kinematic Tree Generation and Handling (part 1)

What:

Automatic elimination of redundant Constraints

Automatic setting of dependent/independent Joint and

Flexible Body states.


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14 Input Functions

What

Cubic approximation

Extrapolation

linear, cubic, boundary conditions

Handling when outside range

Input Function specific warning


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14 Design of Experiments (DoE)


Yellow Body Acceleration

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14 Design of Experiments (DoE)

What

Experiment Design

Full factorial, fractional factorial, latin hypercube, CCF, Box-

Behnken, D-optimal experiment designs

Sequence of solver tasks including user specific scripts

Response Surface Model

Linear, interaction, quadratic, cubic

Goodness-of-fit statistics, Response explorer, Pareto

charts of main effects

Module: DoE


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14 Linear System Analysis (LSA)

What

Analyzing linearized models in the frequency

domain

Available as online and offline solver

Three different operating modes

Frequency Response

System Response

Power Response

Module:

NVH


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14 Operating Deflection Shapes (ODS)

What

Visualizing of nonlinear model behavior at

discrete frequencies

ODS Process

Input = result of a time domain simulation

FFT analysis is performed for all states of the

model

Results = Amplitudes, phases and kinetic energy

of each body

Viewable animation in Post

Module: NVH

New Features Simpack 9.9 Order Analysis

ODS plot at specific rpm

Fre

quen

cy

rpm

Am

plitu

de

Frequency

ODS animations at selected frequencies

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14 Rotorblade Generator

What

Now creates a parameterized SIMBEAM model

SIMBEAM SLV license required as apposed to FlexModal

Cross-sectional forces written directly to sbr file

Easily switchable to Non-linear SIMBEAM

General utility clean-up

Module:

Rotorblade Generator


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14 Aerodynamics and Hydrodynamics

What

AeroDyn V13 is now fully supported by linearization

ECNAero interface input and output directory paths

increased to 1024 characters

Hydrodynamic Interface updated to HydroDyn v2.02

Module:

Interface to AeroDyn, AeroModule and HydroDyn


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14 Design Load Case (DLC)

What

Batch runs of all DLCs

Template Scripts and example model

Automatic analysis and Report

generation

Work in Progress

Results in other formats

X-sec force handling

improvement


+

= Fx Fy Fz Fxyz Mx My Mz Mxyz

max/min DLC SF [kN] [kN] [kN] [kN] [kNm] [kNm] [kNm] [kNm]

max DLC12_WS0025 1.35 879.6 94.2 1201.2 1491.8 -3194.9 27314.4 6.7 27500.6

min DLC13R_WS0012 1.50 -426.7 -3.7 1633.5 1688.3 1889.8 -18420.5 -176.7 18518.0

max DLC13R_WS0014 1.50 394.4 303.1 1660.2 1733.1 -6551.4 10813.4 -15.5 12643.2

min DLC12_WS0018 1.35 335.1 -365.6 746.8 896.5 8891.2 11780.4 -238.2 14761.0

max DLC12_WS0025 1.35 -91.9 -205.7 2071.5 2083.8 4596.9 -9218.8 -261.4 10304.7

min DLC12_WS0003 1.35 46.7 1.9 37.6 60.0 -24.8 1697.2 -28.8 1697.7

max DLC12_WS0025 1.35 -91.9 -205.7 2071.5 2083.8 4596.9 -9218.8 -261.4 10304.7

min DLC12_WS0003 1.35 46.7 1.9 37.6 60.0 -24.8 1697.2 -28.8 1697.7

max DLC12_WS0018 1.35 383.1 -365.6 822.8 978.5 9140.8 13258.8 -268.6 16106.6

min DLC12_WS0021 1.35 429.8 283.5 1637.8 1716.8 -7620.5 12017.7 90.5 14230.4

max DLC12_WS0025 1.35 879.6 94.2 1201.2 1491.8 -3194.9 27314.4 6.7 27500.6

min DLC13R_WS0014 1.50 -423.7 -15.7 1652.8 1706.4 1994.9 -18442.6 -208.9 18551.3

max DLC12_WS0025 1.35 226.6 -239.8 707.2 780.4 6400.1 6490.5 536.7 9131.1

min DLC12_WS0025 1.35 762.9 -292.2 745.4 1105.9 6420.7 26473.8 -576.0 27247.3

max DLC12_WS0025 1.35 781.1 -294.3 744.2 1118.3 5386.4 27116.4 -336.7 27648.2

min DLC12_WS0021 1.35 87.4 -24.2 991.2 995.3 40.1 -16.3 -98.8 107.9

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14 COM (Component Object Model) interface for Simpack

What

Use of Microsoft standard COM for making

calls to Simpack

Exposes same functionality as SIMPACK GUI

and SLV Java Script Interface

For example, Excel (via Visual Basic), can be

used to drive Simpack


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14

Many DoF (degrees of freedom) with higher

frequency content

Direct use of high-fidelity parameterized models, i.e.

no model reduction

Permits use of non-linear and frequency dependent

bushings and mounts

Not restricted to predefined template models

Automatic parallelization

New Features Simpack Model Fidelity

Look-up table

model

Basic component

model

High fidelity

component model

Low frequency model

testing

(static suspension)

Model correlation up to

high frequencies.

Virtual component

analysis and testing

< 20

> 200

Attainable

Goals DoF

Other Solutions

Realtime for HiL, SiL, MiL

SIMPACK News (Hil/SiL)

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14 Realtime Virtual Testing of Full Scale Nacelles

What

Testing extreme loads (e.g. 50 year wind gust)

Intermediary between purely simulation based analysis

and physical testing

Evaluate proposed test profiles

Troubleshoot unexpected behavior

Train personnel


http://www.3ds.com/fileadmin/PRODUCTS/

SIMULIA/PDF/case-study/simulia-clemson-

univ.pdf

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14 Realtime Virtual Testing of Full Scale Nacelles

Pitch Fault


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14 Multi Domain Interfaces


SIMPACK Realtime

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14 Improvements Multi Domain Interfaces

What

MATLAB Simulink

Support for Simulink R2013b through to R2015a

MatSIM now supports source code S-functions

FMU

Multiple enhancements and increased performance

Realtime

POSIX message queuing (in addition to UDP)

Increased solver speed


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14 Many Example Models Available


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14 License Usage

What

Lists a models license requirement

Shows what the current model loaded in

GUI potentially requires

Lists simpack-gui.exe license usage

show what a session is currently using

Access via ‘Extras Licensing’


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14 Overview


General:

COM (scripting) interface for SIMPACK Pre, Solver

SIMPACK Post usability enhancements

DoE usability enhancements

ODS

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14 Overview


Solver

New solver completion

Automatic optimization of kinematic tree (joint/constraint

selection/adaption)

NVH/LSA solver performance boost

Modelling Elements:

Improved PCM contact

Enhanced Gear Pair Element

Improved Multi Domain Interfaces

New Roller Bearing

New flexible helical spline

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14 Overview


Flexible Bodies

Pre-stress within flexible bodies (e.g. pre-stress from bolt connections)

Abaqus co-simulation (e.g. non-linear or plastic deformation, friction)

SIMBEAM cross section force export

Contact with surface nodes of SIMBEAM models (e.g. EHD)

local damping for flexible bodies

Wind

Rotorblade Generator supports parameterized SIMBEAM models

Improved updates to Aerodyn and HydroDyn

Improved interfaces to ECN Aero

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14

Thank you for your attention

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Multi-Body Dynamics Simulation - SIMPACK · Multi-Body Dynamics Simulation ... Motion path and...

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Transcript of Multi-Body Dynamics Simulation - SIMPACK · Multi-Body Dynamics Simulation ... Motion path and...