摘要
在光弹性实验中,模型边缘会产生随时间增长的条纹,它干扰正常的由外载荷引起的应力条纹,给实验带来误差。根据时间边缘效应产生的原因建立了时效数学模型,通过对比根据建立的数学模型模拟的等差线和实验得到的等差线,可以验证所建立的数学模型能够准确地反映出时效的特征,并尝试运用数字光弹性相移法去除时效的影响。
The edge of model will produce fringes with the increase of the time in photoelasticity experiment which interfere stress fringes of the load and influence the experiment precision.Mathematical model of time edge effect is established according to the reason of time edge effect.The mathematical model could reflect characteristics of time edge effect accurately by contrasting simulation isochromatic according to mathematical model with experiment isochromatic.Digital photoelasticity method is used to eliminate the influence of time edge effect.
出处
《光学技术》
CAS
CSCD
北大核心
2009年第5期660-663,667,共5页
Optical Technique
关键词
光弹性
时间边缘效应
数学模型
数字光弹性相移法
photoelasticity
time edge effect
mathematical model
digital photoelasticity method
