Boundary element analysis of the stress singularity at the interface corner of viscoelastic adhesive layers

✍ Scribed by Sang Soon Lee

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 674 KB
• Volume: 35
• Category: Article
• ISSN: 0020-7683
• DOI: 10.1016/s0020-7683(97)83292-1

✦ Synopsis

Ah&act-This

paper concerns the stress singularity at the interface corner between the adhesive layer and the rigid adherend subjected to a uniform transverse tensile strain. The adhesive is assumed to be a linear viscoelastic material. The standard Laplace transform technique is employed to get the characteristic equation and the order of the singularity is obtained numerically for given viscoelastic models. The time-domain boundary element method is used to investigate the behavior of stresses for the whole interface. For the viscoelastic models considered, it is shown that the freeedge stress intensity factors are relaxed with time, while the order of the singularity increases with time or remains constant.