| Dynamic Plastic Analysis of Ship-Platform Collision |
| |
| 作者单位： | Bao Yingbin，Li Runpei and Gu Yongning
Ph. D. Candidate，School of Naval Architecture and Ocean Engineering，Shanghai Jiao Tong University，Shanghai 200030 Professor，School of Naval Architecture and Ocean Engineering Shanghai Jiao Tong University，Shanghai 200030 |
| |
| 摘 要： | This paper studies intensively the problems of ship-platform collision.The ship and platformare treated as one structural system connected with spring elements and then motion equation of the colli-sion system is established.A nonlinear force-displacement relationship is derived for the simulation of lo-cal dent in a hit member and the yield surface of a dented tubular section is developed to consider the re-duction of load carrying capacity of hit members.Large deformations,plasticity and strain-hardening ofthe beam-column element are taken into account by combining the elastic large displacement analysis theo-ry with the plastic node method.The effect of the hydrodynamic forces acting on the platform,the rubberfender the property of the local dent and the buckling behavior of beam-column on collision are analyzed.The numerical simulation of the nonlinear dynamic response is carried out by Wilson θ method with updat-ed Newton-Raphson iteration.And the numerical example of the dynamic response of a offs
|
Dynamic Plastic Analysis of Ship-Platform Collision |
| |
| Authors: | Bao Yingbin Li Runpei and Gu Yongning
Ph D Candidate School of Naval Architecture and Ocean Engineering Shanghai Jiao Tong University Shanghai Professor School of Naval Architecture and Ocean Engineering Shanghai Jiao Tong University Shanghai |
| |
| Institution: | Bao Yingbin,Li Runpei and Gu Yongning
Ph. D. Candidate,School of Naval Architecture and Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200030 Professor,School of Naval Architecture and Ocean Engineering Shanghai Jiao Tong University,Shanghai 200030 |
| |
| Abstract: | This paper studies intensively the problems of ship-platform collision. The ship and platform are treated as one structural system connected with spring elements and then motion equation of the collision system is established. A nonlinear force-displacement relationship is derived for the simulation of local dent in a hit member and the yield surface of a dented tubular section is developed to consider the reduction of load carrying capacity of hit members. Large deformations, plasticity and strain-hardening of the beam-column element are taken into account by combining the elastic large displacement analysis theory with the plastic node method. The effect of the hydrodynamic forces acting on the platform, the rubber fender the property of the local dent and the buckling behavior of beam-column on collision are analyzed. The numerical simulation of the nonlinear dynamic response is carried out by Wilson 8 method with updated Newton-Raphson iteration. And the numerical example of the dynamic response of a offshore platform in ship-platform collision is also present. |
| |
| Keywords: | offchore platform collision strain-hardening dynamic plasticity |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国海洋工程》浏览原始摘要信息 |
| 点击此处可从《中国海洋工程》下载免费的PDF全文 |
