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Currently our design engineering team uses a fairly extensive and well established set of Ansys analysis routines. While these analysis methods are fairly well standardized, the actual model generation has not been standardized to date. Depending on the individual designers skills and preferences, there are a variety of methods being employed for getting the geometry into Ansys for analysis. The model generation may also be affected by which analysis the engineer intends to run. Through the use of process manager we are working to introduce a more standardized as well as streamlined approach to model generation. This will allow us to cut model generation and iteration time for experienced users as well as automatically building in features so that each initial model contains everything needed to be used with our standard analysis routines. It will also have an added benefit of cutting training time for newer users, as well as broadening the amount of users that can create a useful FEA model for design engineering.
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Using Process Manager To
Streamline And Standardize FEM
Generation Gary Berscheit
Seagate Technology
Introduction To Seagate
Seagate: Storage Leader
• Seagate is the world’s leading provider of storage devices.
– Q2 FY2012*: 47 million drives shipped; revenue of $3.2 billion
• Provides storage for enterprise, desktop, mobile
computing, consumer electronics and retail markets
– Builds hard disk, solid state hybrid and solid state drives
– Broadest product offering in the industry – largest customer base
• 53,700** employees worldwide
• Recently Demonstrated 1TB per square Inch!!
– Potential to enable 60 TB drives
* For second fiscal quarter ended December 30, 2011
** Includes interns, contractors, and agency temps
®
Momentus XT - State Hybrid Drive
Seagate Global Presence
Oklahoma City, OK Teparuk & Korat, Thailand
Paris, France
Longmont, CO
Dublin, Ireland
Wuxi, China
Marlow, UK
Munchen, Germany
Tokyo, Japan
Beijing, China
Delhi, India
Shrewsbury, MA
Taiwan
Amsterdam, Netherlands Shakopee, MN
Bloomington, MN
Fremont, CA
Cupertino, CA
Science Park, Singapore
Johor & Penang, Malaysia
Woodlands, Singapore
Sydney, Australia
Ang Mo Kio, Singapore
HQs, Admin and/or Sales
Design
Customer Support
Drive & Component Mfg
Springtown, N. Ireland
Scotts Valley, CA
Suwon, South Korea
HDD Suspension Introduction
Cantilever spring component at the end of the actuator
• Connects the rigid actuator to the recording head
• Must hold the head very close and very precisely over the
media (disk)
– Very Close!!
Suspension Component
• Laminated Circuit Component
• Thin, formed sheet metal component
• Stamped “base” component for mounting
• Damper applied via adhesive
• Small Piezo-electric components applied via epoxy
Suspension Assembly
Finite Element Model
Main Concerns For Model Generation
• Complex geometry of laminated circuit
– Currently use coincident mesh through all layers
• Attachment of multiple components
– Mesh needs to match up between components for defining attach
points (welds)
• Component partitions used for auto detect/selection in
downstream analysis routines
Model Complexities
Multiple approaches depending on component,
desired analysis, and individual designer
• Midsurface of 3D Cad for iges import
• Ideas
• Extruding in Ansys using 2D AutoCAD import
• Hypermesh
Non Standardized Models!
Current FEM Generation Approaches
Process Manager Solution
Goal is to provide an improved FEM generation tool that will
be the preferred method of engineers
• Fast
– Cut model generation time for existing users
– Cut new hire training time
• Easy To Use
– User “buy-in” » Need to be easier than current methods
– Broaden user base » Techs could provide FE model to design engineer
• Standardized
– Incorporate all existing best practices
– Prep model with proper features for downstream analysis routines
– All models created with the same method, and contain same
features, material props, etc.
Vision
Process Manager Demo
Step by step check
box guide
“Command Pane”
with logical, user
centric interface
Demo Section
Process Manager Demo
Process Manager Demo
Process Manager Demo
Process Manager Demo
Process Manager Demo
Process Manager Demo
• Fast?
– Generation time should be cut significantly
• Easy To Use?
– Step by step guided creation
– Little to no Hypermesh experience required
• Standardized?
– Dependent on user “Buy-In”
Summary: So How Did We Do
Thank You!
