玻璃钢/复合材料Issue(5)：5-10,6.
预张拉CFRP加固简支梁的动力特性分析
DYNAMIC ANALYSIS OF SIMPLY SUPPORTED BEAMS STRENGTHENED WITH PRETENSION CFRP SHEETS
摘要
Abstract
The elasticity method was used for analyzing the dynamic characteristics of simply supported beams strengthened with pretension CFRP sheets.The influence of various parameters on characteristics of free vibration of strengthened beams was discussed in detail.Firstly,the strengthened beam was divided into two parts:bare beam and CFRP sheet.The bare beam was studied based on two-dimensional elasticity,and the CFRP sheet was analyzed by the method of string theory.According to the continuity of the displacements and the stresses between the two parts,frequency equation of strengthened beams was obtained.Eigen-frequencies were given by the searching root method of determinant.Excellent consistency of the present solutions and the finite element solutions from the program ANSYS has been observed.The analysis shows that along with the increase of the layers and the pretension force,the reinforcing effect of CFRP on dynamic characteristics of simply supported beams increases.关键词
梁/CFRP/预张拉/加固/固有频率Key words
beam/CFRP/pretension/strengthening/natural frequency分类
通用工业技术引用本文复制引用
陈峰,周叮,刘朵,张建东..预张拉CFRP加固简支梁的动力特性分析[J].玻璃钢/复合材料,2017,(5):5-10,6.基金项目
973计划课题(2012CB026205) （2012CB026205）
江苏省属高校自然科学研究重大项目(12KJA580002) （12KJA580002）
江苏省交通厅重大专项(2014Y01) （2014Y01）
