Integrating Sherlock and Abaqus

Sherlock and AbaqusOctober 16, 20141

Who is DfR Solutions?The Industry Leader in Quality-Reliability-Durability of Electronics 50 Fastest Growing Companies in the Electronics Industry- Inc Magazine2012 Global Technology Award Winner Best Design Verification Tool- Printed Circuit Design 2004 - 2007 2004 - 2010 9000 Virginia Manor Rd Ste 290, Beltsville MD 20705 | 301-474-0607 | www.dfrsolutions.com2Works with Customers Throughout the Product Life CycleApplied ResearchSimulation and Modelingilities (DfR, DfM, DfT, DfX)Supplier AuditsQualificationTest Plan DevelopmentRoot-Cause Analysis 2004 - 2007 2004 - 2010 9000 Virginia Manor Rd Ste 290, Beltsville MD 20705 | 301-474-0607 | www.dfrsolutions.com4What is SherlockSherlock is a CAE knowledge based program for Physics of Failure reliability and durability analysis on electronic equipment Sherlock simplifies model creation and analysisEliminates the long, complicated, model creation process and the need for a PhD level expert in PoF, and FEA.

The Knowledge Based features optimized for electronic components and materials includes customizable, preloaded libraries of: Component models, material properties, analysis wizards and environmental profiles for specific applications.

Designed to be used to quickly create and perform PoF based reliability/durability simulations.

445Sherlock ProcessDesign Capture - provides the detailed inputs to the modeling software and calculation tools

Life-Cycle Characterization - define the reliability/durability objectives and expected environmental & usage conditions (Field or Test) under which the device is required to operate

Load Transformation - translates and distributes the environmental and operational loads across a circuit board to the individual parts

PoF Durability/Reliability Analysis & Risk Assessment - calculates life expectations, reliability distributions & prioritizes risks by applying PoF algorithms to the virtual PCBA model created in steps 1, 2 & 355Sherlock

7Design CaptureImport PCBA Layout, Gerber, ODB++, and other CAD formats. Import BOM Parts ListCorrelated supplier component part # and industry/JEDEC package styles to auto link component to Sherlocks libraries of component geometry and material properties to the individual parts locations mounted on the PCB to create the computer models for the life assessment. Define PCB Laminate & Layers to Calculate Substrate Performance Automated Abaqus model generation

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Design CaptureComponent locations from pick and place data

Design CaptureDrill holes

Design Capture

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Design CaptureLaminate Library Defines 48 Categories Of Material Properties And Characteristics For 319 Circuit Board Laminates Materials From 20 Global Producers. New Entries Can Be Added When New Laminate Materials Are Introduced to the Market.

Design CaptureStackup information

Boundary ConditionsSherlock has predefined boundary conditions that are typically used for printed circuit boards

Life CycleReliability GoalsPhasesStresses

LoadingMulti-Axis shock and vibrationStaticForceDisplacementsModal DynamicHarmonicRandomTransient DynamicMechanical Shock1516Multi-Axis Shock and Vibration LoadsUser can specify load direction and/or PCB orientationUser can specify uni-axial or tri-axial harmonic profiles

Loading161617Abaqus IntegrationMode 1: Sherlock manages all FEA processingMode 2: Export model from Sherlock to AbaqusMode 3: Import Abaqus FEA results into Sherlock for reliability analysisElectronicDesign FilesLife CycleConditions3D Model /Analysis StepsPre-ProcessingReliabilityResults3D Model /Disp Results /Strain ResultsPost-ProcessingPartsPackagesMaterialsFEAToolAbaqusModelResultsFEAScriptSherlockDesignAnalysisSherlockFailureAnalysisSherlockData Store1717Transparent to the userSherlock forms the input deck for Abaqus and runs the simulation with the Abaqus solverSherlock automatically post processes the results and generates the reliability metricsMode 1

Sherlock generated resultsStatic displacement

Mode 1

Sherlock generated resultsRandom Vibration fatigue

Mode 1

Mode 2Automatic Python script generated models for Abaqus CAEGeometric basedAll material properties assignedContact interactions formedBoundary conditionsAnalysis stepsResults need to be imported intoSherlock forreliability assessment

Mode 3Model generated by Sherlock and modified and run in Abaqus CAE

Mechanical parts added, mesh changed, etc..Mode 3

Mode 3

Mode 3

Power supply model, potting added and assessment of lead stresses using Abaqus

PCB Layer ModelingSherlock contains FEA tools to speed Abaqus model developmentTwo general techniquesGeometric layer modelingSherlock generates a Python script which converts the PCB plot layers into geometryMosaic techniqueSherlock generates an input deck with material properties assigned to the meshScript Based

Material properties assigned to copper and resin areasBest suited for generating detailed package models for investigating package CTE issues with AbaqusMosaic

Orphan meshMaterial properties computed for each element based on amount of copper and resin within the element

Mosaic

Multiple techniques available for PCB modelsSherlock leverages the power of Abaqus to greatly speed up the mechanical and the reliability analysis of electronic assembliesMultiple levels of interactionProvides additional tools to develop detailed modelsModels can be generated in minutes verses daysMaterial properties and interactions assigned31Thank you!Nathan Blattau1-301-640-5821 nblattau@dfrsolutions.com

Questions??