基于ANSYS对FRP加固梁的非线性分析

Nonlinear Analysis of Beams Strengthened with FRP Based on ANSYS

基于有限元软件ANSYS,以3根玄武岩纤维布(BFRP)加固梁的试验为依据,通过选取合适的单元类型及收敛准则对纤维复合材料(FRP)加固梁的抗弯性能进行了非线性分析。分析结果表明,通过有限元软件模拟加固梁的破坏性形式与实际试验结果相一致;利用ANSYS可以很好地模拟纤维复合材料加固梁在承载过程中的荷载效应(跨中承载力-挠度曲线、开裂荷载及极限荷载等),计算与试验结果误差在10%以内,为实际工程提供了参考。

Based on the finite element software ANSYS, with 3 basalt fiber （BFRP） reinforced beam test as the hasis, through the selection of element type and convergence criterion, the fiber composite flexural performance of strengthened beam are analyzed by nonlinear analysis. The analysis results show that the finite dement simulation software of strengthened beam destructive form is consistent with the actual test results, and can well simulate fiber composite beams in ultimate load effect in the process of strengthening the use of ANSYS （span load deflection curves, cracking load and limit load etc.）. Experimental data and calculation error is less than 10%, providing a reference for practical engineering.