With the development of material manufacturing techniques and the gradual perfection of contour processing technology, sandwich plates have been widely used in modern aircraft structure design to obtain ideal weight and other functional indicators.The thin plate theory is often used in engineering approximate analysis, which ignores the good bending characteristics of sandwich plates and brings large errors to the analytical results.Based on the large deflection problem of thin plates and related theories of sandwich plates, the method of subsection superposition is proposed to analyze the deformation mechanism of the large deflection of sandwich plates, which is simulated numerically by finite element.Combining the static test of certain type of aircraft honeycomb sandwich compartment panel, the paper verifies the rationality of deformation mechanism and proves the effectiveness of the superposition method.
LI Wei, JIN Cheng-zhong, LIU Si-yuan
. Mechanical performance and numerical simulation of sandwich plate with large deflection[J]. Journal of Shenyang Aerospace University, 2014
, 31(1)
: 24
-27
.
DOI: 10.3969/j.issn.2095-1248.2014.01.006
[1]Gibson L J, Ashby M F.Cellular solids:structure and properties[M].2nd edition.Cambridge:Cambridge University Press, 1997.
[2]杨亚政, 杨嘉陵, 曾涛, 等.轻质多孔材料研究进展[J].力学季刊, 2007, 28(4):503-516.
[3]Reissner, E.Finite deflection of sandwich plate[J].J Aeron Sci, 1950, 17(2):125-130.
[4]刘人怀.夹层圆板大挠度问题的精确解[J].应用数学和力学, 1982, 3(1):11-23.
[5]刘人怀.夹层圆板的非线性弯曲[J].应用数学和力学, 1981, 2(2):173-191.
[6]Tagarielli V L, Fleck N A.Deshpande V S.Collapse of clamped and simply supported composite sandwich beams in three-point bending[J].Composites:Part B, 2004(35):523-534.
[7]Hoff N J.Bending and buckling of rectangular sandwich plates[R].NACA TN-2225, 1950.
[8]牛春匀.使用飞机结构应力分析及尺寸设计[M].北京:北京航空工业出版社, 2009.
