叠梁理论分析与试验研究

Theoretical analysis and experimental research of laminated beam

在一定假设基础上,导得叠梁界面相对滑移及界面摩擦力表达式,进而得到考虑层间水平力影响的叠梁计算公式,该式表明:叠梁横截面上应力应变分布较完全独立弯曲有所差异,叠梁刚度较不考虑层间相互影响的叠梁刚度有所提高,得出了考虑摩擦影响的叠梁理论更能反映实际情况的结论。

Firstly, by means of simple assumptions, expression of comparatively slip between laminated beam was deduced, so that of distributing function of friction. Then, a material mechanics formulation which take into account level force between laminated beam was proposed. Calculation results told us that the stain distributing along cross section of laminated beam was different from bending separately and rigidity of laminated beam have increased with existence of the force. We can draw the conclusions that laminated beam theory which considering friction between layer accord with the fact more and the calculating precision have improved ulteriorly.