摘要
推导出了外载荷作用下夹芯梁截面剪切力表达式,利用夹芯梁截面应力表达式写出了夹芯梁弯曲时的应变能函数,把应变能函数对集中力求偏导即可得到集中力作用处夹芯梁的弯曲挠度。研究结果表明:能量法求得弯曲挠度的计算精度较高,与有关文献的试验结果吻合得较好。
The shear force expression of sandwich beam section under external load is derived,and the strain energy function of sandwich beam during bending is written by using the stress expression of sandwich beam section.The strain energy function is partial to the concentration to obtain the bending deflection of sandwich beam at a concentrated force point.The results show that the energy method has a high accuracy in calculating the bending deflection,and the experimental results are in good agreement with those of related literature.
作者
吴晓
WU Xiao(College of Mechanical Engineering,Hunan University of Arts and Science,Changde 415000,China)
出处
《复合材料科学与工程》
CAS
北大核心
2020年第12期21-25,共5页
Composites Science and Engineering
基金
2017年湖南省普通高等学校教学改革研究项目资助(湘教通[2017]452号)。
关键词
能量法
夹芯梁
弯曲
挠度
剪应力
试验
复合材料
energy method
sandwich beam
bending
deflection
shear stress
test
composites
