Published: Jan 1988
| ||Format||Pages||Price|| |
|PDF (132K)||8||$25||  ADD TO CART|
|Complete Source PDF (16M)||8||$132||  ADD TO CART|
Approximate methods that are less time-consuming than finite-element method (FEM) analysis are needed for dynamic crack propagation and arrest calculations. In this context the one-dimensional wave propagation models, where the cracked section is modeled by a flexibility matrix, may be a reasonable alternative. Such models are compared with fully dynamic two-dimensional FEM calculations of experimentally observed crack growth histories in an edge-cracked rectangular sheet. A fairly good agreement is obtained; the discrepancies could mainly be ascribed to differences in the end conditions. The author concludes that spring models are worth further examination in order to make them a practical tool for engineering design analysis.
crack arrest, line spring model, wave propagation, fracture mechanics
Professor, Uppsala University, Uppsala,