Theoretical analysis, numerical calculation and experimental measurement of transient elastic waves in strips subjected to dynamic loadings
✍ Scribed by Chien-Ching Ma; Genn-Sheng Lee
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 767 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0020-7683
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✦ Synopsis
In this study\ the transient response of an elastic strip subjected to dynamic in!plane loadings on the surface is investigated in detail[ One of the objectives of this study is to develop an e}ective analytical method for determining transient solutions in a strip[ By applying Laplace transform\ the analytical solution in the transformed domain is derived and expressed in matrix form[ The solution is then decomposed into in_nite wave groups in which the multiple re~ected waves with the same re~ection are involved[ Each multi! re~ected wave can be identi_ed by a coding method and be veri_ed by the theory of generalized ray[ The inverse transform is performed by using the well!known Cagniard method[ The transient solutions in time domain for stresses and displacements are expressed in a closed form and are discussed in detail by an example[ The experimental results show that the early time transient responses of displacements on the surface agree very well with the numerical calculations based on the theoretical solutions[ Þ 0888 Elsevier Science Ltd[ All rights reserved