Overview

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Overview

The 3DCS Advanced Analyzer and Optimizer (AAO) is an add-on module to 3DCS which leverages and expands the existing equation-based GeoFactor product. The tool utilizes coefficients derived from GeoFactor to support non-linear models. This module is an advanced analysis package only and requires a completed 3DCS model to function correctly.

 

GeoFactor Analyzer (GFA) DVTI_AnalyzerTable is an equation-based analysis output that identifies the amount and source of variation within an assembly. GeoFactor Analyzer creates an equation of the entire 3DCS model and displays the inputs (contributors/tolerances) and outputs (measurement results) and their relationships (GeoFactor /Coefficients of Influence) in a graphical interactive matrix. The 3DCS model is converted into an equation-based model where tolerance changes can be made in the graphical interactive matrix providing instantaneous feedback of updated results, where analysis results are viewed in numerical or graphical format, and where a color-coded matrix of the Sensitivity Index can interactively emphasize contributors that are of greater importance to the measurements.

Simulation Based Sensitivity (SBS) DVTI_DoeTable Simulation-Based Sensitivity (SBS) is an analysis tool that helps the user understand the effects of contributors on the variation and mean shift of each measure.  SBS has been added to the AAO Toolbar under Add-Ons. Along with SBS, the user has these analysis tools available to interpret the model results and make informed decisions on how to improve them.  All these analyses calculate the percent contributions of the tolerances, GD&T, and "floats" to the measures.

Critical Tolerance Identifier (CTI) DVTI_KCSensitivity is a meta-analysis tool that identifies the critical tolerances in a model. CTI quantifies the effect of tolerances and assembly variation on the measurements simultaneously while GeoFactor and HLM calculate each measure separately. True model quality is often thought of as either the sum of the percent-in-spec for each measurement or the percent of samples with no measurements out-of-spec. These statistics do not have a simple relationship to the input tolerances. Therefore, CTI indicates the most (and least) important tolerances. To support various cases, the model results are calculated by four different sensitivity methods, PPK%, PP%, OUT%, and Ave%

Tolerance Optimizer (TO) DVTI_CostOptimization  is a tool for optimizing tolerances to achieve the best quality based on adjusting the input tolerance ranges to meet your measurement requirements. It attempts to loosen less critical tolerances and tighten more critical tolerances. If it can loosen more tolerances than it tightens, the product should be cheaper to build. 3DCS Optimizer allows users to optimize tolerances to achieve best quality at a minimum cost where users can allocate the largest possible tolerances (larger tolerance = less cost) while still meeting dimensional objectives.

Sequence Optimizer (SO) SequenceOpt_icon is a tool designed to reduce lead and launch time by eliminating or minimizing manual join\clamp sequence studies. The Sequence Optimizer determines the optimal join\clamp sequence from a candidate set of join/clamps. Users may optimize clamp sequence or joining sequence.

Datum Optimizer (DO) DatumOpt_icon is a tool designed to determine the optimal datums from a candidate set with the goal of minimizing the rigid part variation or compliant part deformation.

 

Prerequisites

User

Working knowledge of 3DCS Analysis Software

Basic Mathematics background

Software

3DCS Variation Analyst

3DCS Advanced Analyzer and Optimizer Module License

3DCS Compliant Modeler Module License (for some of the modules)

Assumptions and Limitations

Linear Model

GeoFactor Method

Linear Optimization cost model

 

Model Files

The files required for the completion of this tutorial can be found on the following default directory:

C:\Users\Public\Public Documents\DCS\3DCS_All Platforms_8_0_0_1\Tutorials\All Platforms_AAO_Tutorial