ENHANCEMENT EFFECT ANALYSIS OF LATTICE-WEBS TO GFRP-WOOD SANDWICH BEAMS IN FLATWISE AND SIDEWISE BENDING

摘要：

　　composite sandwich beams with Paulownia and southern pine wood core and glass-fiber reinforced polymer(GFRP)facesheet and lattice-webs.A vacuum assisted resin infusion process(VARI)was employed to form sandwich beams with different numbers of webs.Two control wooden beams and eighteen lattice-web reinforced sandwich beams were subjected to four-point bending tests to determine their stiffness,capacity,and failure mechanisms in the flatwise and sidewise positions.The experimental results revealed that the composite sandwich beams failed in flatwise bending tests under lower load but produced a greater deflection compared to the beams in sidewise bending tests.With the increase in the number of lattice-webs,ductility was found to increase in flatwise positions while decreasing in sidewise positions.Analytical formulas for calculating the bending stiffness,capacity,and ductility of the GFRP-wood sandwich beams were provided,and the analysis results for mechanical performance showed good agreement with the experimental results.

关键词： GFRP-wood sandwich beams lattice-web reinforced flexural flatwise sidewise

作者: Hai Fang Huiyuan Shi Weiqing Liu Yujun Qi Ruili Huo

作者单位: College of Civil Engineering,Nanjing Tech University,Nanjing,China School of Civil Engineering,Southeast University,Nanjing,China Advanced Engineering Composites Research Center,Nanjing Tech University,Nanjing,China

会议类型: 国际会议

会议名称: the Sixth Asia-Pacific Conference on FRP in Structures (APFIS2017)(第六届亚太纤维增强复合材料结构工程国际会议暨第十届全国建设工程FRP应用学术交流会)

会议地点: 新加坡

会议语种:英文

页码: 1-5

在线出版日期: 2017-07-19（万方平台首次上网日期，不代表论文的发表时间）