个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职:Professor
其他任职:工程力学系主任
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:力学与航空航天学院
学科:固体力学. 航空航天力学与工程. 计算力学. 工程力学
联系方式:haopeng@dlut.edu.cn
电子邮箱:haopeng@dlut.edu.cn
Three-point bending deflection and failure mechanism map of sandwich beams with second-order hierarchical corrugated truss core
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论文类型:期刊论文
第一作者:Li, Gang
通讯作者:Hao, P (reprint author), Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dept Engn Mech, Dalian, Peoples R China.
合写作者:Fang, Yaochu,Hao, Peng,Li, Zhaokai
发表时间:2017-01-01
发表刊物:JOURNAL OF SANDWICH STRUCTURES & MATERIALS
收录刊物:SCIE、EI
卷号:19
期号:1
页面范围:83-107
ISSN号:1099-6362
关键字:Sandwich beam; hierarchical corrugated truss core; three-point bending; correction factor; failure mechanism map
摘要:For sandwich beams with second-order hierarchical corrugated truss core under three-point bending, a correction factor of shear deflection was firstly proposed to improve the prediction accuracy of the bending analysis, which was verified by finite element analysis and compared with the original formula. Then, the failure modes of the sandwich beam under bending were analyzed, including four competing modes of the large struts (i.e. plastic yielding, buckling, wrinkling of facesheet, shear buckling) and two competing modes of the small struts (i.e. plastic yielding, buckling). Subsequently, the analytical expressions of critical load for each failure mode were derived. On this basis, the failure mechanism maps were constructed. Finally, several typical points from the map were selected and verified by finite element analysis, and a good agreement of predicted failure modes was observed.