The Experts below are selected from a list of 9324 Experts worldwide ranked by ideXlab platform
Dewen Zhao - One of the best experts on this subject based on the ideXlab platform.
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limit analysis based on gm criterion for defect Free Pipe elbow under internal pressure
International Journal of Mechanical Sciences, 2014Co-Authors: Shunhu Zhang, Xiaonan Wang, Binna Song, Dewen ZhaoAbstract:Abstract Analytical solution of limit load for a defect-Free Pipe elbow is obtained under internal pressure using GM (geometric midline), in which the strain hardening effect has been taken into account. The limit load is a function of ratio of thickness to radius t0/r0, strain hardening exponent n, curvature influence factor m and ultimate tensile strength. Comparison with FE and analytical results of other investigators was performed. Although the limit loads calculated by GM criterion are little higher than the traditional analytical results, the GM results are in good agreement with FE results. Besides, the effect of different criteria, strain hardening exponent, ratio of thickness to radius, as well as curvature influence factor on the limit loads are also discussed systematically.
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limit analysis of defect Free Pipe elbow under internal pressure with mean yield criterion
Journal of Iron and Steel Research International, 2013Co-Authors: Shunhu Zhang, Dewen Zhao, Cairu Gao, Guodong WangAbstract:With mean yield (MY) criterion, an analytical solution of the collapse load for a defect-Free Pipe elbow under internal pressure is first obtained. It is a function of ratio of thickness to radius t0/r0, strain hardening exponent n, curvature influence factor m and ultimate tensile strength. The collapse load increases with the increase of m, and it is the same as the burst pressure of straight Pipe if m = 1 is assumed. The MY-based solution is compared with those based on Tresca, Mises and twin shear stress (TSS) yield criteria, and the comparison indicates that Tresca and twin shear stress yield criteria predict a lower bound and an upper bound to the collapse load respectively. However, the MY-based solution lies just between the TSS and Tresca solutions, and almost has the same precision with the Mises solution.
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limit analysis of defect Free Pipe elbow under internal pressure with my criterion
Applied Mechanics and Materials, 2011Co-Authors: Shunhu Zhang, Dewen Zhao, Cairu GaoAbstract:With MY (mean yield) criterion, the limit load of defect-Free Pipe elbow under inner pressure is analyzed, and an analytical solution is first obtained. The solution shows that the limit load is a function of wall thickness t, average radius r, yield strength as well as curvature radius R0. The limit load increases with the increase of the curvature radius R0 and will get the same value with the burst pressure of straight Pipe if R0→∞. The limit load calculated by the solution is compared with those based on Tresca, Mises, as well as TSS yield criteria. It is also concluded that Tresca criterion predicts a lower bound to the limit load, while TSS criterion predicts an upper bound one. However, the limit load based on the MY criterion lies just between the TSS and Tresca solutions, most notably, the MY criterion almost has the same prediction precision with Mises solution.
Shunhu Zhang - One of the best experts on this subject based on the ideXlab platform.
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limit analysis based on gm criterion for defect Free Pipe elbow under internal pressure
International Journal of Mechanical Sciences, 2014Co-Authors: Shunhu Zhang, Xiaonan Wang, Binna Song, Dewen ZhaoAbstract:Abstract Analytical solution of limit load for a defect-Free Pipe elbow is obtained under internal pressure using GM (geometric midline), in which the strain hardening effect has been taken into account. The limit load is a function of ratio of thickness to radius t0/r0, strain hardening exponent n, curvature influence factor m and ultimate tensile strength. Comparison with FE and analytical results of other investigators was performed. Although the limit loads calculated by GM criterion are little higher than the traditional analytical results, the GM results are in good agreement with FE results. Besides, the effect of different criteria, strain hardening exponent, ratio of thickness to radius, as well as curvature influence factor on the limit loads are also discussed systematically.
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limit analysis of defect Free Pipe elbow under internal pressure with mean yield criterion
Journal of Iron and Steel Research International, 2013Co-Authors: Shunhu Zhang, Dewen Zhao, Cairu Gao, Guodong WangAbstract:With mean yield (MY) criterion, an analytical solution of the collapse load for a defect-Free Pipe elbow under internal pressure is first obtained. It is a function of ratio of thickness to radius t0/r0, strain hardening exponent n, curvature influence factor m and ultimate tensile strength. The collapse load increases with the increase of m, and it is the same as the burst pressure of straight Pipe if m = 1 is assumed. The MY-based solution is compared with those based on Tresca, Mises and twin shear stress (TSS) yield criteria, and the comparison indicates that Tresca and twin shear stress yield criteria predict a lower bound and an upper bound to the collapse load respectively. However, the MY-based solution lies just between the TSS and Tresca solutions, and almost has the same precision with the Mises solution.
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limit analysis of defect Free Pipe elbow under internal pressure with my criterion
Applied Mechanics and Materials, 2011Co-Authors: Shunhu Zhang, Dewen Zhao, Cairu GaoAbstract:With MY (mean yield) criterion, the limit load of defect-Free Pipe elbow under inner pressure is analyzed, and an analytical solution is first obtained. The solution shows that the limit load is a function of wall thickness t, average radius r, yield strength as well as curvature radius R0. The limit load increases with the increase of the curvature radius R0 and will get the same value with the burst pressure of straight Pipe if R0→∞. The limit load calculated by the solution is compared with those based on Tresca, Mises, as well as TSS yield criteria. It is also concluded that Tresca criterion predicts a lower bound to the limit load, while TSS criterion predicts an upper bound one. However, the limit load based on the MY criterion lies just between the TSS and Tresca solutions, most notably, the MY criterion almost has the same prediction precision with Mises solution.
Xiaonan Wang - One of the best experts on this subject based on the ideXlab platform.
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limit analysis based on gm criterion for defect Free Pipe elbow under internal pressure
International Journal of Mechanical Sciences, 2014Co-Authors: Shunhu Zhang, Xiaonan Wang, Binna Song, Dewen ZhaoAbstract:Abstract Analytical solution of limit load for a defect-Free Pipe elbow is obtained under internal pressure using GM (geometric midline), in which the strain hardening effect has been taken into account. The limit load is a function of ratio of thickness to radius t0/r0, strain hardening exponent n, curvature influence factor m and ultimate tensile strength. Comparison with FE and analytical results of other investigators was performed. Although the limit loads calculated by GM criterion are little higher than the traditional analytical results, the GM results are in good agreement with FE results. Besides, the effect of different criteria, strain hardening exponent, ratio of thickness to radius, as well as curvature influence factor on the limit loads are also discussed systematically.
Binna Song - One of the best experts on this subject based on the ideXlab platform.
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limit analysis based on gm criterion for defect Free Pipe elbow under internal pressure
International Journal of Mechanical Sciences, 2014Co-Authors: Shunhu Zhang, Xiaonan Wang, Binna Song, Dewen ZhaoAbstract:Abstract Analytical solution of limit load for a defect-Free Pipe elbow is obtained under internal pressure using GM (geometric midline), in which the strain hardening effect has been taken into account. The limit load is a function of ratio of thickness to radius t0/r0, strain hardening exponent n, curvature influence factor m and ultimate tensile strength. Comparison with FE and analytical results of other investigators was performed. Although the limit loads calculated by GM criterion are little higher than the traditional analytical results, the GM results are in good agreement with FE results. Besides, the effect of different criteria, strain hardening exponent, ratio of thickness to radius, as well as curvature influence factor on the limit loads are also discussed systematically.
Cairu Gao - One of the best experts on this subject based on the ideXlab platform.
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limit analysis of defect Free Pipe elbow under internal pressure with mean yield criterion
Journal of Iron and Steel Research International, 2013Co-Authors: Shunhu Zhang, Dewen Zhao, Cairu Gao, Guodong WangAbstract:With mean yield (MY) criterion, an analytical solution of the collapse load for a defect-Free Pipe elbow under internal pressure is first obtained. It is a function of ratio of thickness to radius t0/r0, strain hardening exponent n, curvature influence factor m and ultimate tensile strength. The collapse load increases with the increase of m, and it is the same as the burst pressure of straight Pipe if m = 1 is assumed. The MY-based solution is compared with those based on Tresca, Mises and twin shear stress (TSS) yield criteria, and the comparison indicates that Tresca and twin shear stress yield criteria predict a lower bound and an upper bound to the collapse load respectively. However, the MY-based solution lies just between the TSS and Tresca solutions, and almost has the same precision with the Mises solution.
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limit analysis of defect Free Pipe elbow under internal pressure with my criterion
Applied Mechanics and Materials, 2011Co-Authors: Shunhu Zhang, Dewen Zhao, Cairu GaoAbstract:With MY (mean yield) criterion, the limit load of defect-Free Pipe elbow under inner pressure is analyzed, and an analytical solution is first obtained. The solution shows that the limit load is a function of wall thickness t, average radius r, yield strength as well as curvature radius R0. The limit load increases with the increase of the curvature radius R0 and will get the same value with the burst pressure of straight Pipe if R0→∞. The limit load calculated by the solution is compared with those based on Tresca, Mises, as well as TSS yield criteria. It is also concluded that Tresca criterion predicts a lower bound to the limit load, while TSS criterion predicts an upper bound one. However, the limit load based on the MY criterion lies just between the TSS and Tresca solutions, most notably, the MY criterion almost has the same prediction precision with Mises solution.
