Geometric Covariance in Compliant Assembly Tolerance Analysis课件.ppt

Geometric CovarianceinCompliant AssemblyTolerance Analysis;Presentation Outline;Introduction;Introduction;Background;Compliant Assembly Tolerance Analysis;Find Misalignment of Rigid Parts;Model the Flexible Parts with FEA;Obtain Condensed Stiffness Matrices;Obtain Condensed Stiffness Matrices;Obtain Condensed Stiffness Matrices;Obtain Condensed Stiffness Matrices;Apply Boundary Conditions;Apply Boundary Conditions;Solve for Closure Forces;Solve for Closure Forces;Solve for Closure Forces;Solve for Closure Forces;Create Super-Element Stiffness Matrices;Geometric Covariance;Material and Geometric Covariance Defined;Material and Geometric Covariance Defined;Material and Geometric Covariance Defined;Combining Geometric Covariance and FEA/STA;The Curve Fit Polynomial Method;Forms of Geometric Covariance;Simulations, Results, and Verification;Two Plate Example;Use of Monte Carlo Simulations;Zero Covariance Case;Closure Force Covariance Matrix;Force Covariance Solution;Zero Covariance Case;Full Covariance Case;Full Covariance Case;Full Covariance Case;Curve Fit Polynomial Covariance Case;Curve Fit Polynomial Covariance Case;Curve Fit Polynomial Covariance Case;Curve Fit Polynomial Covariance Case;Curve Fit Polynomial Covariance Case;Curve Fit Polynomial Covariance Case;Curve Fit Polynomial Covariance Case;Curve Fit Polynomial Covariance Case;Curve Fit Polynomial Covariance Case;Comparisonof Results;Conclusions;Conclusions;Limitations;Applications;Future Work