1996-02-01

Relaxation of Thermoplastic Rotary Shaft Seals 960141

In order to use the finite elements efficiently in the design of PTFE seals at an early stage a suitable material model is a basic requirement. To the knowledge of the authors such a material model is not yet commercially available.So a typical polytetrafluorethylen (PTFE) compound with glass fiber and other fillers has been investigated. This type of compound is extensively used for main lip rotary shaft seals.Material properties like stress-strain characteristics and relaxation under traction- and compression load were measured at various temperatures and their dependence on time was analyzed.A material model was developed to be implemented into FE-programs.Calculated and measured values of the radial load of shaft seals with varying loading over time were compared and prove the reliability of the proposed material model.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: Purchase more aerospace standards and aerospace material specifications and save! AeroPaks off a customized subscription plan that lets you pay for just the documents that you need, when you need them.
X