The Experts below are selected from a list of 228 Experts worldwide ranked by ideXlab platform
Xinyao Zhu - One of the best experts on this subject based on the ideXlab platform.
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an investigation on the behavior of anisothermal adhesive contact based on maugis Dugdale Model
Mechanics of Materials, 2019Co-Authors: Xinyao Zhu, Fujun Wang, Dawei ZhangAbstract:Abstract The present study considers the effect of heat conduction on the behavior of adhesive contact between two elastic spheres of different temperatures, where the adhesion forces are supposed to follow the Dugdale Model. The thermal adhesive contact issue is transformed into two intercoupled nonlinear integral equations which are governed by two parameters: λ (adhesion parameter) and M. By means of iteration method, numeric results are obtained. Analogous to the traditional Maugis-Dugdale (M-D) Model, the results provide transition of the pull-off force between JKR and DMT type contact Models through the adjustment of the adhesion parameter λ with fixed parameter M. On the other hand, with a fixed adhesion parameter λ, it is indicated that the shape of the force-contact radius curve and the pull-off force are dependent on the parameter M. Finally, we find the uniformity of the pressure distribution is affected by the applied load F and adhesion parameter λ.
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An investigation on the behavior of anisothermal adhesive contact based on Maugis–Dugdale Model
Mechanics of Materials, 2019Co-Authors: Xinyao Zhu, Fujun Wang, Dawei ZhangAbstract:Abstract The present study considers the effect of heat conduction on the behavior of adhesive contact between two elastic spheres of different temperatures, where the adhesion forces are supposed to follow the Dugdale Model. The thermal adhesive contact issue is transformed into two intercoupled nonlinear integral equations which are governed by two parameters: λ (adhesion parameter) and M. By means of iteration method, numeric results are obtained. Analogous to the traditional Maugis-Dugdale (M-D) Model, the results provide transition of the pull-off force between JKR and DMT type contact Models through the adjustment of the adhesion parameter λ with fixed parameter M. On the other hand, with a fixed adhesion parameter λ, it is indicated that the shape of the force-contact radius curve and the pull-off force are dependent on the parameter M. Finally, we find the uniformity of the pressure distribution is affected by the applied load F and adhesion parameter λ.
Dawei Zhang - One of the best experts on this subject based on the ideXlab platform.
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an investigation on the behavior of anisothermal adhesive contact based on maugis Dugdale Model
Mechanics of Materials, 2019Co-Authors: Xinyao Zhu, Fujun Wang, Dawei ZhangAbstract:Abstract The present study considers the effect of heat conduction on the behavior of adhesive contact between two elastic spheres of different temperatures, where the adhesion forces are supposed to follow the Dugdale Model. The thermal adhesive contact issue is transformed into two intercoupled nonlinear integral equations which are governed by two parameters: λ (adhesion parameter) and M. By means of iteration method, numeric results are obtained. Analogous to the traditional Maugis-Dugdale (M-D) Model, the results provide transition of the pull-off force between JKR and DMT type contact Models through the adjustment of the adhesion parameter λ with fixed parameter M. On the other hand, with a fixed adhesion parameter λ, it is indicated that the shape of the force-contact radius curve and the pull-off force are dependent on the parameter M. Finally, we find the uniformity of the pressure distribution is affected by the applied load F and adhesion parameter λ.
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An investigation on the behavior of anisothermal adhesive contact based on Maugis–Dugdale Model
Mechanics of Materials, 2019Co-Authors: Xinyao Zhu, Fujun Wang, Dawei ZhangAbstract:Abstract The present study considers the effect of heat conduction on the behavior of adhesive contact between two elastic spheres of different temperatures, where the adhesion forces are supposed to follow the Dugdale Model. The thermal adhesive contact issue is transformed into two intercoupled nonlinear integral equations which are governed by two parameters: λ (adhesion parameter) and M. By means of iteration method, numeric results are obtained. Analogous to the traditional Maugis-Dugdale (M-D) Model, the results provide transition of the pull-off force between JKR and DMT type contact Models through the adjustment of the adhesion parameter λ with fixed parameter M. On the other hand, with a fixed adhesion parameter λ, it is indicated that the shape of the force-contact radius curve and the pull-off force are dependent on the parameter M. Finally, we find the uniformity of the pressure distribution is affected by the applied load F and adhesion parameter λ.
M.j. Sun - One of the best experts on this subject based on the ideXlab platform.
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A new analytical method for stress intensity factors based on in situ measurement of crack deformation under biaxial tension
Materials & Design, 2011Co-Authors: J.g. Wang, M.j. SunAbstract:A new approach for the calculation of stress intensity factors (SIF) for isotropic and orthotropic materials under biaxial tension loading was proposed in this paper. In order to determine SIF from the full-field displacement data, an asymptotic expansion of the crack tip displacement field was performed. The deforming shape and surface residual stress of the crack tip was obtained at the early extended stage of the loading process by using optical microscope and X-ray diffraction measurement. During this stage, a modified Dugdale Model, which takes into account the coupled effect at the crack tip, was proposed for the open displacement of the crack tip. In this paper, the SIFs of two types of silicon steel sheet with isotropic and orthotropic properties were calculated using the modified Dugdale Model based on the biaxial tension experimental data. From the results, it was found that analysis using the modified Dugdale Model is an effective way to evaluate SIF under biaxial stress.
Yuris A. Dzenis - One of the best experts on this subject based on the ideXlab platform.
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Closed-form solution for the size of plastic zone in an edge-cracked strip
International Journal of Engineering Science, 2002Co-Authors: Yuris A. DzenisAbstract:This paper is concerned with the problem of plastic zone at the tip of an edge crack in an isotropic elastoplastic strip under anti-plane deformations. By means of complex potential and Dugdale Model, the stress intensity factor and the size of plastic zone are obtained in closed-form. Furthermore, the analytic solutions for an edge crack at the free boundary of a half-space and a semi-infinite crack heading towards a free surface are determined as the limiting cases of the strip geometries.
Huajian Gao - One of the best experts on this subject based on the ideXlab platform.
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generalized maugis Dugdale Model of an elastic cylinder in non slipping adhesive contact with a stretched substrate
International Journal of Materials Research, 2006Co-Authors: Shaohua Chen, Huajian GaoAbstract:We have recently developed a generalized JKR Model for non-slipping adhesive contact between an elastic cylinder and a stretched substrate where both tangential and normal tractions are transmitted across the contact interface. Here we extend this Model to a generalized Maugis-Dugdale Model by adopting a Dugdale-type adhesive interaction law to eliminate the stress singularity near the edge of the contact zone. The non-slipping Maugis-Dugdale Model is expected to have a broader range of validity in comparison with the non-slipping JKR Model. The solution shares a number of common features with experimentally observed behaviors of cell reorientation on a cyclically stretched substrate.
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Generalized Maugis–Dugdale Model of an elastic cylinder in non-slipping adhesive contact with a stretched substrate
Zeitschrift für Metallkunde, 2006Co-Authors: Shaohua Chen, Huajian GaoAbstract:Abstract We have recently developed a generalized JKR Model for non-slipping adhesive contact between an elastic cylinder and a stretched substrate where both tangential and normal tractions are transmitted across the contact interface. Here we extend this Model to a generalized Maugis–Dugdale Model by adopting a Dugdale-type adhesive interaction law to eliminate the stress singularity near the edge of the contact zone. The non-slipping Maugis–Dugdale Model is expected to have a broader range of validity in comparison with the non-slipping JKR Model. The solution shares a number of common features with experimentally observed behaviors of cell reorientation on a cyclically stretched substrate.
