Tailoring Sandwich Face/Core Interfaces for Improved Damage Tolerance-Part I: Finite Element Analysis

被引：7

作者：

Lundsgaard-Larsen, Christian ^{[1
]}

Berggreen, Christian ^{[1
]}

Carlsson, Leif A. ^{[2
]}

机构：

[1] Tech Univ Denmark, Dept Mech Engn, DK-2800 Lyngby, Denmark

[2] Florida Atlantic Univ, Dept Mech Engn, Boca Raton, FL 33431 USA

来源：

APPLIED COMPOSITE MATERIALS | 2010年 / 17卷 / 06期

关键词：

Sandwich structures; Cohesive zone modeling; Fracture resistance; Crack kinking; MODE COHESIVE LAWS; FRACTURE SPECIMENS; DELAMINATION; BEAMS;

D O I：

10.1007/s10443-010-9131-5

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Various modifications of the face/core interface in foam core sandwich specimens are examined in a series of two papers. This paper constitutes part I and describes the finite element analysis of a sandwich test specimen, i.e. a DCB specimen loaded by uneven bending moments (DCB-UBM). Using this test almost any mode-mixity between pure mode I and mode II can be obtained. A cohesive zone model of the mixed mode fracture process involving large-scale bridging is developed. Results from the analysis are used in Part II, which describes methods and results of a series of experiments.

引用

页码：609 / 619

页数：11

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