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✦   LIBER   ✦

Elastic-plastic analysis of surface flaws using a simplified line-spring model

✍ Scribed by R.B. King

Book ID
103068077
Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
928 KB
Volume
18
Category
Article
ISSN
0013-7944

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✦ Synopsis

The line-spring model has proven to be an effective tool for evaluating fracture parameters in surface-cracked plates and shells. However, application of the model requires detailed numerical computations, necessitating the availability of a specialized computer code. For approximate engineering calculations a version of the model which is more convenient to implement computationally, would be useful.

In this paper a simplified line-spring model is presented along with detailed illustration of its application. The simplification is accomplished by replacing the crack front with a crack of constant depth and treating the ligament "spring" as elastic perfectly plastic. Despite its simplicity the model gives reasonably accurate predictions of fracture parameters, such as the J-integral or crack opening displacement (COD) at the root of surface cracks. This will be demonstrated by comparing analytical results for J and COD with previously published experimental data for surface-cracked steel plates.

πŸ“œ SIMILAR VOLUMES

Line-spring analysis of surface flawed p
Line-spring analysis of surface flawed plates and shells using deformation theory
✍ T.G. Shawki; T. Nakamura; D.M. Parks πŸ“‚ Article πŸ“… 1989 πŸ› Springer Netherlands 🌐 English βš– 936 KB

The line-spring model is an efficient tool introduced by Rice and Levy [1] for the approximate analysis of surface flaws in plates and shells. A finite element implementation of the linear elastic line-spring was reported by Parks et al. [2]. The stress intensity factors obtained using this model we