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J. Davies, "Numerical Study of Speciment Subjected to Shear Compression Stress Field", in B.H.V. Topping, (Editor), "Proceedings of the Fourth International Conference on Civil and Structural Engineering Computing", Civil-Comp Press, Edinburgh, UK, pp 351-360, 1989. doi:10.4203/ccp.9.9.3

Abstract

The study of the distribution of elastic stresses between crack tips represents a special interest in the understanding of the mechanism of fracture. The Finite Element Analysis was used to determine the influence of geometry and loading conditions on the stress distribution in specimens proposed for fracture testing of cementitious materials in shear. It was shown that the maximum shear stresses generated between two opposite notches are of significant magnitude and may be the driving force during fracture process. To establish the contribution of the shear part of the loading towards the overall cracking process, the mixed mode stress intensity factors K_I and K_II at the crack tips were estimated from numerical displacements. It was established that K_II is significantly higher than K_I, therefore, indicating that the shear part of loading plays an important role during the fracture process. The numerical study was complemented by a series of experiments which confirmed that shear fracture can be generated under the specific loading conditions.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 9/10 PROCEEDINGS OF THE FOURTH INTERNATIONAL CONFERENCE ON CIVIL AND STRUCTURAL ENGINEERING COMPUTING Edited by: B.H.V. Topping Paper IX.3 Numerical Study of Speciment Subjected to Shear Compression Stress Field J. Davies Department of Civil Engineering, The Polytechnic of Wales, Pontypridd, Wales doi:10.4203/ccp.9.9.3 purchase the full-text of this paper Full Bibliographic Reference for this paper J. Davies, "Numerical Study of Speciment Subjected to Shear Compression Stress Field", in B.H.V. Topping, (Editor), "Proceedings of the Fourth International Conference on Civil and Structural Engineering Computing", Civil-Comp Press, Edinburgh, UK, pp 351-360, 1989. doi:10.4203/ccp.9.9.3 Abstract The study of the distribution of elastic stresses between crack tips represents a special interest in the understanding of the mechanism of fracture. The Finite Element Analysis was used to determine the influence of geometry and loading conditions on the stress distribution in specimens proposed for fracture testing of cementitious materials in shear. It was shown that the maximum shear stresses generated between two opposite notches are of significant magnitude and may be the driving force during fracture process. To establish the contribution of the shear part of the loading towards the overall cracking process, the mixed mode stress intensity factors K_I and K_II at the crack tips were estimated from numerical displacements. It was established that K_II is significantly higher than K_I, therefore, indicating that the shear part of loading plays an important role during the fracture process. The numerical study was complemented by a series of experiments which confirmed that shear fracture can be generated under the specific loading conditions. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £78 +P&P)
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