Computer modeling of piezoresistive gauges

Conference · Fri Aug 07 04:00:00 EDT 1981

OSTI ID:6265549

Nutt, G L; Hallquist, J O

A computer model of a piezoresistive gauge subject to shock loading is developed. The time-dependent two-dimensional response of the gauge is calculated. The stress and strain components of the gauge are determined assuming elastic-plastic material properties. The model is compared with experiment for four cases. An ytterbium foil gauge in a PPMA medium subjected to a 5.0 kbar plane shock wave, where the gauge is presented to the shock with its flat surface both parallel and perpendicular to the front. A similar comparison is made for a manganin foil subjected to a 27.5 kbar shock. The signals are compared also with a calibration equation derived with the gauge and medium properties accounted for but with the assumption that the gauge is in stress equilibrium with the shock medium.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6265549
• Report Number(s): UCRL-85763-Rev.1; CONF-810931-2(Rev.1); ON: DE81029610
• Country of Publication: United States
• Language: English

Related Subjects

440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
ALLOYS
CALIBRATION
COPPER ALLOYS
COPPER BASE ALLOYS
ELECTRICITY
ELEMENTS
FOILS
FUNCTIONS
IMPACT TESTS
MANGANESE ALLOYS
MANGANIN
MATERIALS TESTING
MEASURING INSTRUMENTS
MECHANICAL TESTS
METALS
NICKEL ALLOYS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PIEZOELECTRICITY
POLYMERS
RARE EARTHS
RESPONSE FUNCTIONS
SHOCK WAVES
SIGNALS
STRAIN GAGES
TESTING
TRANSDUCERS
TWO-DIMENSIONAL CALCULATIONS
YTTERBIUM