Publications

Characterization & Modeling of Materials in Glass-To-Metal Seals: Part I

Chambers, Robert S.; Emery, John M.; Tandon, Rajan T.; Antoun, Bonnie R.; Stavig, Mark E.; Newton, Clay S.

To support higher fidelity modeling of residual stresses in glass-to-metal (GTM) seals and to demonstrate the accuracy of finite element analysis predictions, characterization and validation data have been collected for Sandia’s commonly used compression seal materials. The temperature dependence of the storage moduli, the shear relaxation modulus master curve and structural relaxation of the Schott 8061 glass were measured and stress-strain curves were generated for SS304L VAR in small strain regimes typical of GTM seal applications spanning temperatures from 20 to 500 C. Material models were calibrated and finite element predictions are being compared to measured data to assess the accuracy of predictions.