Article | REF: BM7536 V1

Deep-drawing tribology

Author: Éric FELDER

Publication date: March 10, 2011

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!


Français

3. Friction under the punch

A hydrodynamic film can form under the punch if the lubricant is present in excess of the sheet's roughness (see 1.2.3). We first present the theory of this effect, then specify the orders of magnitude of friction if the hydrodynamic effect is negligible. A summary of these two aspects without numerical simulation is presented in § 5.1.1.

3.1 Excess weight: hydrodynamic effect under the punch

Lubricant viscosity can induce hydrodynamic effects that reduce metal-tool interactions in stamping. For example, a lubricant film may form at the sheet metal-punch contact due to viscous entrainment of the lubricant by the sheet metal under the punch. Wilson and Wang [18] have modeled the formation of a lubricating film from a lubricant of viscosity η ...

You do not have access to this resource.

Exclusive to subscribers. 97% yet to be discovered!

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!


The Ultimate Scientific and Technical Reference

A Comprehensive Knowledge Base, with over 1,200 authors and 100 scientific advisors
+ More than 10,000 articles and 1,000 how-to sheets, over 800 new or updated articles every year
From design to prototyping, right through to industrialization, the reference for securing the development of your industrial projects

This article is included in

Material processing - Assembly

This offer includes:

Knowledge Base

Updated and enriched with articles validated by our scientific committees

Services

A set of exclusive tools to complement the resources

Practical Path

Operational and didactic, to guarantee the acquisition of transversal skills

Doc & Quiz

Interactive articles with quizzes, for constructive reading

Subscribe now!

Ongoing reading
Friction under the punch