Thermal/mechanical interaction of subcritical crack growth in tensile specimen |
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| Authors: | D.Y. Tzou G.C. Sih |
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| Affiliation: | 1. School of Civil Engineering and Architecture, Zhongyuan University of Technology, Zhengzhou, China;2. Department of Architecture and Civil Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, China;3. City University of Hong Kong Shenzhen Research Institute, Shenzhen 518057, China;1. Clermont Université, Université Blaise Pascal, Institut Pascal, EA 3867, F-63000 Clermont Ferrand, France;2. CNRS, UMR 6602, Institut Pascal, F-63171, France;3. LARIS, UPRES EA7315, Université d’Angers-ISTIA, 62 avenue Notre Dame du Lac, Angers, France;4. CENAREST, IRT, BP 14070 Libreville, Gabon;5. Limoges University, GEMH, EA 3178, Civil Engineering Center, 19300 Egletons, France;1. Institute of Mathematics, University of Kassel, Heinrich-Plett Str. 40, 34132 Kassel, Germany;2. DICATAM–Sezione di Matematica, University of Brescia, Via Valotti 9, 25133 Brescia, Italy;3. Department of Mathematical Sciences, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy |
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| Abstract: | The mutually interacting thermal/mechanical effects are accounted for by retaining the rate of change of volume with surface dV/dA, in the surface/volume energy density theory. An exchange between surface and volume energy would thus prevail in accordance with the rates at which the loads are transmitted throughout the system. Obtained are results for a center-cracked specimen subjected to monotonically rising tensile load at the rate of . Eight load steps are taken with an even increment increase of 69 MPa starting from 276 MPa. The temperature is found to oscillate about the ambient condition as the crack grew incrementally in a stable fashion. What differed considerably from the plasticity theory are the local stress and strain distribution and the crack growth characteristics. This is particularly pronounced in regions close to the crack tip where the local strain rates and strain rate history change from element to element, an affect that is not accounted for in plasticity. |
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