摘要
研究了如何应用应变片代替传感器进行梁的位移测试.在建立连续梁的运动微分方程的基础上,经过比较梁上测点的位移与应变的数学表达式,证明了简支梁以一阶模态振动时的动应变与动挠度具有正比关系.故只要测得连续梁的应变,即可得到连续梁的挠度.
By comparing the deflection of the measure point on the beam with equation of the strain,a direct proportion between deflection and strain as a beam vibrating is proved. If the strain of a beam can be measured, the deflection of the beam can be obtained. With this result, we can replace sensors with strain meter.
出处
《长沙铁道学院学报》
CSCD
北大核心
2003年第3期96-100,共5页
Journal of Changsha Railway University
关键词
应力
应变
挠度
传感器
stress
strain
deflection
sensors
