ADAMS2008 and AeroDyn?

Wind & Water Computer-Aided Engineering Software Tools
21

Dear Yingyu,

You should not be concerned with the Ixx, Iyy, and Izz warnings. These are simply consequences of the way FAST constructs the ADAMS model. They appear in almost every simulation without consequence. For example, FAST only has an input for the yaw inertia of the nacelle, but does not have inputs for the pitch and roll inertias. So when FAST creates the rigid body ADAMS “PART” representing the nacelle, it sets the pitch and roll inertia of the nacelle to negligibly small numbers. ADAMS reacts by generating a warning. To get rid of the warning, you can manually change the nacelle PART to include the full correct inertia in all 3-directions (if you have such data). But I suspect the results wouldn’t change that much because, in general, the inertias that aren’t inputs in the FAST input file have little effect on a turbine’s dynamic response.

The warnings and eventual error with regard to ADAMS not being able to find the SFOSUB, GFOSUB, VARSUB, SENSUB, and REQSUB subroutines are more serious. SFOSUB, GFOSUB, VARSUB, SENSUB, and REQSUB are the subroutines that are supposed to be compiled into the DLL compiled with the A2AD routines. It appears that ADAMS cannot find them when you try to run the simulation, and thus the simulation aborts. Are you sure you compiled the DLL properly? If so, have you properly referenced the DLL via the ru-user command when you run ADAMS?

Best regards,

22

Dear Jason,

Thanks for your reply.

When I attempted to use ru-user command in ADAMS in administrator mode, I typed the locations of *.dll and *.acf file, but I got an error.

[code]Microsoft Windows [版本 6.1.7600]
版权所有 (c) 2009 Microsoft Corporation。保留所有权利。

C:\Windows\system32>cd C:\Users\XYY\Desktop\NREL_5MW_Onshore\FAST_1

C:\Users\XYY\Desktop\NREL_5MW_Onshore\FAST_1>D:\software\ADAMS2013\common\mdi.ba
t

 +------------------------------------------------------+
 |        | Adams 2013                       |          |
 |        ------------------------------------          |
 |Action                                  Selection Code|
 |------                                  --------------|
 |                                                      |
 |Create Adams/Solver with                              |
 |   Adams User-DLL                          cr-user    |
 |                                                      |
 |Run Adams/Solver with                                 |
 |   Standard Adams executable               ru-standard|
 |   User executable                         ru-user    |
 |                                                      |
 |Pre- or Post-process with                             |
 |   Adams/View                              aview      |
 |   Adams/Car                               acar       |
 |   Adams/Driveline                         adriveline |
 |   Adams/PostProcessor                     appt       |
 |   Adams/Insight                           ainsight   |
 |   Adams/Flex Toolkit                      flextk     |
 |   Adams/Durability Toolkit                durtk      |
 |   MSC Registry Editor                     redit      |
 |   MSC Registry Shell Tool                 rtool      |
 |   Custom Memory Model (uconfg_user)       cmm        |
 +------------------------------------------------------+

 Enter your selection code or EXIT: ru-user

Enter name of your Adams/Solver User-DLL, or EXIT:
ADAMS13_forBladedDLL

Enter the name of the Adams command file or EXIT (=none):
NRELOffshrBsline5MW_Onshore_ADAMS

| … … |
| ####*. ####. |
| ###*. #. MSC Software |
| ###. #. ------------ | | ##. ## |
| ##. ## | | ## ##’ A d a m s C++ S o l v e r |
| #### [Build: 2013.0.0-CL177174] |
| ###. Version: 2013 |
| ####. Patch Version: None | | .### # |
| #### # | | #### #. | | ##### # http://www.mscsoftware.com |
| .##### |
| #####’ |
| #### |
| |
| ********************************************************************* |
| * * |
| * MSC Software Corporation * |
| * * |
| * A d a m s * |
| * * |
| * Automatic Dynamic Analysis of Mechanical Systems * |
| * * |
| ********************************************************************* |
| * * |
| * LEGAL INFORMATION * |
| * * |
| * Warning: This computer program is protected by copyright law * |
| * and international treaties. Unauthorized reproduction or * |
| * distribution of this computer program, or any portion of it, * |
| * may result in severe civil and criminal penalties. * |
| * * |
| * Copyright (C) 2013 MSC Software Corporation and its licensors. * |
| * All rights reserved. * |
| * * |
| * This computer program may contain certain third-party software * |
| * that is protected by copyright and licensed from MSC Software * |
| * suppliers. Portions of this software are owned by UGS Corp. * |
| * (C) Copyright 1997. All Rights Reserved. Portions, (C) 1998 * |
| * Spacetec IMC Corporation (“Spacetec”). * |
| * * |
| * The MSC Software logo, MSC, MSC Adams, MD Adams, Adams and * |
| * Adams/ are trademarks or registered trademarks of MSC Software * |
| * Corporation or its subsidiaries in the United States and/or * |
| * other countries. FLEXlm is a registered trademark of * |
| * Macrovision Corporation. Parasolid is a registered trademark of * |
| * UGS Corp. All other trademarks are the property of their * |
| * respective owners. * |
| * * |
| ********************************************************************* |
*********************************************************************
* *
* Local Time: 2016-04-16 14:30:52 *
* Host Name: XYY-PC *
* Uname: MS Windows NT *
* OS Info: 6.1 *
* User: XYY *
* Customer ID: 2B887301-D14G178B *
* Current dir: C:\Users\XYY\Desktop\NREL_5MW_Onshore\FAST_1 *
* *
*********************************************************************

command: FILE/MODEL=NRELOffshrBsline5MW_Onshore_ADAMS.adm, OUTPUT_PREFIX=NRELOf
fshrBsline5MW_Onshore_ADAMS.plt

WARNING: The RESULTS/NOTIRES argument is obsolete and Adams/Solver will ignore
it.
WARNING: Argument : NOTIRES
WARNING: Statement : RESULTS/etc.
WARNING: Line number : 7773

Running NWTC Subroutine Library (v1.07.02a-mlb, 21-May-2013).

Running A2AD (v13.01.00a-bjj, 15-Feb-2012).

| Model Title |
|=============================================================================|
| |
| !ADAMS/View model name: NREL 5.0 MW Baseline Wind Turbine for Use in Offshore
An|

command: INTEGRATOR/GSTIFF, ERROR = 0.001, HMAX = 1.250000E-02, INTERPOLATE =
ON
command: SIMULATE/DYNAMICS, END = 1.250000E-02, DTOUT = 1.250000E-02

Begin Simulation

****** Performing Dynamic Simulation using Gstiff I3 Integrator ******

---- START: WARNING ----
The data set is kinematically determinate. However, a dynamic analysis
has been requested. A kinematic analysis with the SIMULATE/KINEMATICS
command would be more efficient and possibly more accurate for some of
the computed quantities.
As requested, the simulation will continue with a dynamic analysis.

---- END: WARNING ----
The system is modelled with INDEX-3 DAEs.
The integrator is GSTIFF, CORRECTOR = original
Integration error = 1.000000E-03

Detected system force units of kilonewtons (kN).

---- START: ERROR ----
GFOSUB(11010, 1, 1) has been illegally defined. A new functional dependency on
the measure
TDISP(4000,1,1) has been encountered during execution.

---- END: ERROR ----

Error calling INFARY for hub position coordinates.

Aborting A2AD.

C:\Users\XYY\Desktop\NREL_5MW_Onshore\FAST_1>[/code]
Then I changed my way to ADAMS/view following Rannam.Chaaban’s steps in [url]Compile Adams2AD with ADAMS 2010].

Step1. ADAMS/view → existing model(file name: *.adm from FAST)
Step2. Setting → solver → executable(solver library: ADAMS_forBladedDLL.dll, choice: Fortran)
step3. simulation → creat simulation script(ACF File: *.acf from FAST)
step4. simulation → scripted simulation control → run

Then, I got a *.plt file from ADAMS without error. I compared it with *.out from FAST, but these .plt showed rotor can only rotate in 8.532rpm and generate 1.245MW GenPwr in the constant wind speed 11.4m/s.

I tried again in ADAMS/vibration. I defined no input channel or output channel, performed a normal mode analysis in static operating point, then I displayed eigen table. But only one mode showed with zero frequency. Also, I defined one input channel in TowerSec01CM_M, and 20 output channels with marker TowerSec01CM_M~TowerSec20CM_M, then I performed a forced vibration analysis in static operating point. But still only one mode showed with zero frequency.

So I have no idea if I have compiled the DLL，referenced the DLL and manipulated in ADAMS properly.

Besides, a *_Lin.acf was also created in FAST. If I had compiled DLL properly, what can I do with *_Lin.acf?

Yingyu.Xu

23

Dear Yingyu,

The *_LIN.acf file was useful for linearizing the ADAMS model (structural only) to identify natural frequencies, damping ratios, and mode shapes using ADAMS/Linear.

I don’t think I can really answer your other questions, as I haven’t ran ADAMS in years. A2AD functioned properly with older versions of ADAMS, but I’m not sure about the compatibilities with existing versions. Hopefully someone else on the forum or MSC Technical Support can help you.

Best regards,