designing for durability with fatigue analysis - ansys ansys workbench environment provides the...

1
The ANSYS Workbench environment provides the ideal environment for fatigue analysis combining the power of ANSYS Mechanical and ANSYS nCode DesignLife. Designing for Durability with Fatigue Analysis ANSYS nCode DesignLife Applications Maximize fatigue life while minimizing design, manufacturing and maintenance costs. ANSYS nCode DesignLife Fatigue Process in ANSYS Workbench – Example: Wind Turbine Moog FCS Multi Axis Shaker Table Original Design Improved Design Fatigue failure at 0.393 years Fatigue failure at 8.5 years Wind-turbine failure simulated with DesingLife Measurements made in different weather Axial forces and moments are measured Define Duty Cycle Measured forces & moments Equivalent Stress Seam Weld Fatigue on a muffler Hot-spot detection on a residential wind turbine Fatigue analysis on a high frequency power module switch Multi-axial strain life fatigue on a pressure manifold Vibration fatigue Thermo-Mechanical-Fatigue ANSYS DesingLife is integrated within ANSYS Workbench with ANSYS Mechanical The maximum forces and moments are used by Mechanical to calculate stresses and strains A duty cycle is built by repeating the measured forces and moment to create a representative year of loading Maximum stress and strains scaled by the measured data Accumulated damage used to determine fatigue life Initial failure occurs inside the outer shaft support The hub is redesigned by changing the geometry Parameters in DesignModeler are used to improve the design The extrusion of the hub near the area of failure is varied DesignXplorer optimizes the geometry for fatigue life The response surface by DesignXplorer shows the variation in fatigue life vs function of the parameters The automatic optimizations improves fatigue life by a factor of 21 All of the optimization is done with a few clicks of the mouse Bence Gerber

Upload: lykhue

Post on 05-May-2018

308 views

Category:

Documents


5 download

TRANSCRIPT

Page 1: Designing for Durability with Fatigue Analysis - ANSYS ANSYS Workbench environment provides the ideal environment for fatigue ... Vibration fatigue Thermo-Mechanical-Fatigue ... All

The ANSYS Workbench environment provides the ideal environment for fatigue analysiscombining the power of ANSYS Mechanical and ANSYS nCode DesignLife.

Designing for Durability with Fatigue Analysis

ANSYS nCode DesignLife Applications

Maximize fatigue life while minimizing design, manufacturing and maintenance costs.

ANSYS nCode DesignLife Fatigue Process in ANSYS Workbench – Example: Wind Turbine

Moog FCS Multi Axis Shaker Table

Original Design

Improved Design

Fatigue failure at 0.393 years

Fatigue failure at 8.5 years

• Wind-turbine failure simulated with DesingLife

• Measurements made in different weather• Axial forces and moments are measured

Define Duty CycleMeasured forces & moments

Equivalent Stress

Seam Weld Fatigue on a muffler Hot-spot detection on a residential wind turbine

Fatigue analysis on a high frequency power module switch

Multi-axial strain life fatigue on a pressure manifold

Vibration fatigue Thermo-Mechanical-Fatigue

• ANSYS DesingLife is integrated within ANSYS Workbench with ANSYS Mechanical

• The maximum forces and moments are used by Mechanical to calculate stresses and strains

• A duty cycle is built by repeating the measured forces and moment to create a representative year of loading

• Maximum stress and strains scaled by the measured data• Accumulated damage used to determine fatigue life

• Initial failure occurs inside the outer shaft support

• The hub is redesigned by changing the geometry

• Parameters in DesignModeler are used to improve the design

• The extrusion of the hub near the area of failure is varied

• DesignXplorer optimizes the geometry for fatigue life

• The response surface by DesignXplorer shows the variation in fatigue life vs function of the parameters

• The automatic optimizations improves fatigue life by a factor of 21

All of the optimization is done with a few clicks of the mouse

Bence Gerber