Base strain effects on force measurements

被引：1

作者：

Cappa, P ^{[1
]}

McConnell, KG ^{[1
]}

机构：

[1] IOWA STATE UNIV SCI & TECHNOL,DEPT AEROSP ENGN & MECH,AMES,IA 50011

来源：

EXPERIMENTAL MECHANICS | 1996年 / 36卷 / 03期

关键词：

force transducer; dynamic calibration; base strain; environmental effects;

D O I：

10.1007/BF02318020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Force transducers directly interact with their environment. In this study, a force transducer is attached to the midpoint of a free-free beam and is used to measure the force on a rigid mass that vibrates with the beam. The ratio of force to mass times acceleration is measured for several different masses over a frequency range that includes the first four odd natural frequencies of the beam, Then the force transducer is mounted so that the beam's strain is isolated from the transducer. The tests are repeated. The results dramatically illustrate the effects of base strain on the force measurements. A simple theoretical model is developed that explains the vertical axis shift in the calibration curve.

引用

页码：284 / 289

页数：6