Variation Simulation of Fixtured Assembly Processes for Compliant Structures Using Piecewise-Linear Analysis

While variation analysis methods for compliant assemblies are not new, little has been done to include the effects of multi-step, fixtured assembly processes. This thesis introduces a new method to statistically analyze compliant part assembly processes using fixtures. This method, consistent with the FASTA method developed at BYU, yields both a mean and a variant solution. The method, called Piecewise-Linear Elastic Analysis, or PLEA, is developed for predicting the residual stress, deformation and springback variation in compliant assemblies. A comprehensive, step-by-step analysis map is provided. PLEA is validated on a simple, laboratory assembly and a more complex, production assembly. Significant modeling findings are reported as well as the comparison of the analytical to physical results.

Name thesis:degree_name

MS

Grantor dc:publisher

Brigham Young University - Provo

Author dc:creator

• Stewart, Michael L.

• tolerance (engineering)
• finite element method
• statistical tolerance analysis
• compliant assemblies
• analysis of covariance
• manufacturing processes
• variation analysis
• FASTA
• PLEA
• Mechanical Engineering

Language dc:language

English

Repository record dc:identifier

https://scholarsarchive.byu.edu/etd/195

OAI identifier oai:identifier

oai:scholarsarchive.byu.edu:etd-1194