understanding femap addons - siemens plm …€¦ · understanding femap addons b. andrew jabola...

5/22/2012

Understanding FEMAP Addons

B. Andrew Jabola

Russ Hilley

5/12/16

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Agenda

• Introduction

• FEMAP Add-on Overview

– Base NASTRAN

– Dynamics

– Advanced

– Optimization

– Advanced Nonlinear

– Additional Add-ons

– Structural Analysis Toolkit – Russ Hilley

• Conclusion

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Introduction

• This presentation helps to clarify “what you get” when looking at different FEMAP packages

• We will overview each package and discuss included features

– For some of the more advanced packages, we will demonstrate some of the advanced capabilities

• FEMAP packaging is being changed to help organize product addons

– Packaging organization shown on next slide

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Introduction

• FEMAP Packaging

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FEMAP Add-on Overview

• FEMAP with NX NASTRAN (Base)

– Solutions Included

• Linear Static (101)

• Modal Analysis (103)

• Buckling (105)

• Nonlinear Static (106)

• Nonlinear Transient (129)

• Cycle Solutions (114, 115, 116)– Static, Normal Modes, Buckling

• NASTRAN Thermal Steady State (153)

• NASTRAN Thermal Transient (159)

– Base Package is primary workhorse for most general FEA

– Nonlinear Transient gives the ability to run some direct transient runs for small cases

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• FEMAP Dynamics


• Frequency Response (108, 111)– Includes Random Response

• Transient Response (109, 112)

• DDAM Response (187)

• Complex Eigenvalue Response (107, 110)

• Cyclic Frequency Response (118)

– Primary solutions that are used are frequency response, specifically for both sine and random vibration analyses

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• FEMAP NASTRAN Advanced


• Aeroelasticity (144, 145, 146)

• NASTRAN Superelement

• NASTRAN DMAP

– Aeroelasticity provides ability to couple aero loads with dynamic response

– Superelements allow user to reduce models into assemblies for more efficient analysis and processing

– DMAP allows for customization of analysis processes directly within NASTRAN

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• FEMAP Optimization

– Solutions Included:

• Design Optimization (200)

– This solution provides the ability to apply design optimization loads and lightweight structures based off certain objectives

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• FEMAP Advanced Nonlinear

– Based off ADINA Solver

– Solutions Included:

• Nonlinear Implicit Static (601, 106)

• Nonlinear Implicit Dynamic (601, 129)

• Nonlinear Explicit (701)

– Provides advanced capabilities such as surface-surface contact, element rupture, and large strain analyses

– Explicit Analysis can be used for high-speed impact situations

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• Other Addons– Enterprise Extension

• This solution adds the ability to run NASTRAN outside of FEMAP via command line

• Desktop versions only allow NASTRAN decks to be run internal to FEMAP on the system that created it– This is checked by having NASTRAN look at the

ENDDATA tag and determine if file has been edited and created on same system

– Rotor Dynamics• This adds the ability to analyze frequency

response for rotating systems

• Specialized Add-on specifically for high-speed rotating machinery

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Introduction

• What is the SA Toolkit and what does it do?

– The SA Toolkit is a set of post-processing tools used to organize and report results of your FEA.

– The toolkit takes selected data from the NX Nastran *.op2 file and presents the results in an easy to read format.

• MS Excel

• HTML

• Universal (Ideas)

• Neutral (FEMAP)

• ASCII

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User Interface

• When installed, as SAToolkit icon is placed in the toolbar area above the graphics window in FEMAP.

• The main user interface launches and attaches below the FEMAP messages window.

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SA Toolkit Tools

• The Tools

– Mass Processor

– Stress Processor

– Grid point force processor

– Element force processor

– Energy processor

– Modal processor

– Random vibration processor

– Sine vibration processor

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Mass Processor

• Gives a detailed view of the mass properties of the FEM

– The results are processed using the op2 file produced by a normal modes run.

• Writes output to MS Excel

– Mass per property

– Mass per group

– Mass per user defined groups

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Mass Processor Results

• Mass per property graph and tables

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Stress Processor

• The stress processor summarizes margins of safety.

– Multiple user defined groups

– Multiple user defined subcases

– User specified failure theory

– Results can be written to text, Excel, and FEMAP neutral files.

– Margins of safety can be graphically displayed in FEMAP as contour plots.

• The stress processor can be used with the following NX Nastran solutions

– Sol 101, 108, 109, 111, 112

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Stress Processor Results

• Margin of safety contour in FEMAP

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Grid Point Force Processor

• Calculates forces and force/unit length margins at user defined joints in the FEM.

– Evaluate strength of bonded joints

– Joint is defined using node and element groups.

– Processes results from:

• Sol 101

• Sol 108 and 111 – Requires the use of a DMAP supplied with the toolkit.

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Grid Point Force Processor Results

• Nodal Results

– Load per unit length

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Grid Point Force Processor Results

• Joint Results

– Nodal and overall margins of safety

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Element Force Processor

• Summarizes forces on elements for multiple element groups or NX Nastran subcases.

– Output depends on element type

– Summaries simplify identification of critical components

– Processes results from op2 files from SOLs 101, 108, 109, 111, and 112

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Element Force Results

• Listed here by subcase but the results can be listed by element as well.

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Energy Processor

• Efficiently identifies groups with high energy on a mode by mode basis.

• Processes results from a normal modes analysis.

• Case control must include

– ESE=All

– EKE=All

• Recommend using PARAM Tiny

• Can be used with the DMAP supplied with the toolkit.

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Modal Processor

• Organizes results from a normal modes analysis, SOL 103

• Must use the supplied DMAP

• Model has to be constrained at one grid.

• Produces results in Excel

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Modal Processor Results

• Effective Mass

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Modal Processor Results

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Random Processor

• The random processor reads the results of a normal modes analysis and calculates the response of a structure.

– Base shake problem

• The random processor is the equivalent of a modal frequency run (SOL 111)

• Allows excitation in X, Y, and Z in the same run.

• The supplied DMAP or delivery database must be used.

• The model has to be constrained at one grid to simulate the base shake problem.

• Requires a PSD curve input.

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Random Processor Output

• Outputs PSD curves, Peak and RMS

– HTML and Excel

• Computes true Von Mises stress and margins of safety

– A FEMAP neutral file is created to visualize these results in FEMAP.

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Random Processor Results

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Random Processor Results

• Von Mises Stress Contour

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Sine Processor

• Very similar to the Random Processor

– Processes results of a normal modes analysis.

– Equivalent to SOL 111

• Allows excitation in 10 directions in one run

• Outputs response curves, Von Mises stress, and Margins of Safety

• Outputs curves in HTML and Excel format.

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Sine Processor Output

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Sine Processor Output

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Conclusion

• We have shown several major capabilities of the main packages shown below

– Hopefully from this you will be able to maximize what options are available to you in FEMAP

• Package Breakdown is shown below

understanding femap addons - siemens plm …€¦ · understanding femap addons b. andrew jabola...

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