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Jeremy Frank & Eric Hobbs BSAC Group Lunch Sept. 19 th 2001 PowerPoint PPT Presentation


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Jeremy Frank & Eric Hobbs BSAC Group Lunch Sept. 19 th 2001. Why Solidworks?. Fabrication. Analysis. Ease of Use. Communication of Ideas. Simple to Model Complex Geom. Why Solidworks?. Fabrication. Analysis. Ease of Use. Communication of Ideas. Simple to Model Complex Geom.

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Jeremy Frank & Eric Hobbs BSAC Group Lunch Sept. 19 th 2001

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Jeremy Frank & Eric Hobbs

BSAC Group Lunch

Sept. 19th 2001


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Why Solidworks?

Fabrication

Analysis

Ease of Use

Communication

of Ideas

Simple to Model

Complex Geom.


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Why Solidworks?

Fabrication

Analysis

Ease of Use

Communication

of Ideas

Simple to Model

Complex Geom.


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Drag and Drop

SolidWorks 2-D Sketch

{ Save as .dxf }

Through Cadence

Without Cadence

Obtain .cif File

Obtain .gds file

Use -Lab

Unix Command

“gds2tap filename.gds”

Follow Directions

on BSAC Webpage

to import .cif file

Obtain .tap file

Open file in Cadence

… for Fabrication

Process Flow to Obtain Mask Files (.tap)

SolidWorks 3-D Model

FAB


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…STS process

Sorry… Confidential Information

Single layer mask files can be easily obtained using process delineated on previous slides

FAB


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In SolidWorks

Mate in Assembly

After Conversion

In SolidWorks

After Conversion

Doughnut Problem

Still Working on better solution to the “Doughnut Problem”:

~ *.gds files require reentrant polygons

Without re-entrant ploy’s

With re-entrant ploy’s

FAB

For more info: http://www.artwork.com/pads/polygon.htm


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Why Solidworks?

Fabrication

Analysis

Ease of Use

Communication

of Ideas

Simple to Model

Complex Geom.


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5um

10um

… Curve Capability

Some Examples of Curve Capability

So much for square Inductors

Simple


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True Parametric Design

Similar to P-Cells in CADENCE SolidWorks incorporates equation driven parametric iterations for all of your test structure desires.

All Configurations from Same Part File

Simple

Example from dog-bone of Tang Resonator


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Why Solidworks?

Fabrication

Analysis

Ease of Use

Communication

of Ideas

Simple to Model

Complex Geom.


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… to Analyze

  • Solidworks is Interfaces with many Add-On Packages Including:

  • COSMOS Works

    • Finite Element Solver

    • Optimization Packages Available

  • Dynamic Designer (Talk to Anita Flynn)

  • There are many more that have not been

  • inspected as of yet.

Analysis


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Cosmos Works

F

A Simple Cantilever

Beam Analysis

h

L

b

Analysis


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COSMOS Scaled Tests

Type of test% error from closed-form solution

Uni-axial TensionExact Solution (<0.0001%)

Maximum Stress in

Cantilevered Beam0.07% Error

Point-Mass Cantilever3% Error (but we did not

Resonatoraccount for distributed mass)


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Modal Analysis

Modal analysis of a Crab Leg Resonator

Analysis


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Sorry… Confidential information

Please See the link to: Dynamic Designer

(Powered By ADAMS)

… For Dynamic Analysis

Anita Flynn's ~ Dynamic Analysis Results

Analysis


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Why Solidworks?

Fabrication

Analysis

Ease of Use

Communication

of Ideas

Simple to Model

Complex Geom.


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… Communication

Place your favorite photo

rendering of your

device here to show

your Advisor/Manager

Comm.

Sorry… Confidential Design Information


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Some Issues

  • SolidWorks Functionality:

    • Processor/RAM Dependent

    • Great for masks for stepper

    • Complete Wafer masks cause the computer to bog

  • COSMOS Works

    • You must scale to mm to perform FEA (no good under 1mm)

  • LinkCAD

    • Doughnut Problem not solved as of yet…


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LinkCAD information

  • Visit www.linkcad.com

  • Converts (input and output)

  • CIF, DXF, GDS-II, GDS-TXT, Postscript

  • Costs at the University Discount

  • $ 450 LinkCAD (30 seats)

  • + $ 135 LinkCAD View

  • $585


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SolidWorks information

  • Two seats currently available

  • 1167, 5109 Etcheverry Hall

  • SolidWorks offers a 25-seat site

  • license for $3750 (Network License)

  • ($150 per seat)


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COSMOSWorks information

  • One seat currently available ~ 1167 Etch. Hall

  • Our package includes

  • Linear Structural Modeling

  • Thermal Modeling

  • Design Optimization

  • Initial verification of the necessary scaling steps

  • are positive.


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