STUDIES ON NONLINEAR-ANALYSIS BUCKLING OF SANDWICH SHELL WITH FOAM CORE
Sandwich shell with large size and complicated geometry is used in the fields of civil aviation, transportation and so on. The weakness of sandwich shell is buckling. In this paper, the shell element with modified stiffness , which is based upon the conventional shell element is developed to simulate the sandwich shell with soft foam core by NASTRAN. It is proved that the shell element with modified stiffness is valid by comparing with the results of the Ahmad shell element. And then the influences of the elastic modulus of core, facesheet and the thickness ratio of facesheet to core on the buckling of sandwich shell with foam core are calculated and discussed. Some suggestions to enhance the stability of sandwich shell with foam core are then drawn out.
LI Yi WANG Sheng-nan
School of Aeronautics, Northwestern Polytechnical University, Xi’an 710072
国际会议
第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)
北京
英文
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）