English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The tolerancing process links the virtual and the real worlds. From theformer, tolerances define a variational geometrical language (geometricparameters). From the latter, there are values limiting those parameters. Thebeginning of a tolerancing process is in this duality. As high precisionassemblies cannot be analyzed with the assumption that form errors arenegligible, we propose to apply this process to assemblies with form errorsthrough a new way of allowing to parameterize forms and solve their assemblies.The assembly process is calculated through a method of allowing to solve the 3Dassemblies of pairs of surfaces having form errors using a static equilibrium.We have built a geometrical model based on the modal shapes of the idealsurface. We compute for the completely deterministic contact points betweenthis pair of shapes according to a given assembly process. The solution givesan accurate evaluation of the assembly performance. Then we compare the resultswith or without taking into account the form errors. When we analyze a batch ofassemblies, the problem is to compute for the nonconformity rate of a pilotproduction according to the functional requirements. We input probable errorsof surfaces (position, orientation, and form) in our calculus and we evaluatethe quality of the results compared with the functional requirements. The pilotproduction then can or cannot be validated.

Modeling of 2D and 3D Assemblies Taking Into Account Form Errors of Plane Surfaces