Analytical solutions for non-uniformity of energy release rate of orthotropic double cantilever beam specimens with an adhesive layer

作者：Jiang, Zhengwen; Wan, Shui^*; Li, Minghong; Ma, Lei

来源：Engineering Fracture Mechanics, 2016, 164: 46-59.

DOI：10.1016/j.engfracmech.2016.07.011

• Double cantilever beam
• Non-uniformity coefficient
• Mode I fracture toughness
• Anticlastic deformation
• Free edge effect

An improved plate model is proposed for the orthotropic double cantilever beam (DCB) specimens with an adhesive layer. The upper adherend of the DCB specimens was converted to a rectangular plate supported by a row of vertical springs and rotational springs at one end and subjected to a vertical uniform traction at the other end. The transverse deflection distributions of the present model along the width are determined using the Rayleigh-Ritz method. Then, combined with the virtual crack closure technique, the closed-form solutions for non-uniformity coefficient beta and variation coefficient nu are Obtained, from which the mode-I initiation fracture toughness can be determined precisely and conveniently.

• 出版日期2016-9
• 单位东南大学