Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Corrected method for scaling the dynamic response of stiffened plate subjected to blast load
Abstract Test on a small scaled model is an effective approach to predict the dynamic response of full scale structure under blast loadings. However, the geometric dimensions of specimens cannot simply comply with complete geometrical similarity due to manufacture or test restrictions. It would result in the difference structural performance between the full and small scaled models. This paper proposed a corrected similarity relationship of the dynamic behaviour between prototype and replica of stiffened plates subjected to blast load, in which both the thickness of the plate and the configuration (cross-sectional shape) of stiffeners are distortedly scaled-down (double distorted geometric scaling factors). Firstly, based on the mesh convergence study and comparing with results from experimental tests, a numerical method in predicting the confined blast load and dynamic response of structure was verified, which provides a reliable means to determine the dynamic behaviour of stiffened plate designed by the corrected similarity criterion of this paper. Then, the influence of altering the stiffener configuration on the dynamic response of stiffened plates was analysed and on the basis of it, a criterion for scaling the stiffener is proposed to help design a stiffener-distorted model from prototype structure. In addition, a method for scaling the double-parameter distortedly small scaled model is proposed to predict the dynamic response of the prototype. Finally, two sets of examples of both the small size and prototype stiffened structures subjected to blast load were analysed by using the presented method. It is shown that the replica developed by applying the present method is able to accurately predict the behaviour of the full-size stiffened plates, even when the thickness of the plate and the configuration of the stiffeners are distortedly scaling down with different factors.
Highlights Corrected method for scaling the dynamic response of stiffened plate subjected to blast load is proposed and verified. A meshing scheme of computational domain for calculating the propagation of shockwave in 2D and 3D space is presented. A verified numerical method in predicting the confined blast load and dynamic response of stiffened plate is presented. Rapid and accurate assessment of dynamic response of steel plates under blast by using small scale model can be achieved.
Corrected method for scaling the dynamic response of stiffened plate subjected to blast load
Abstract Test on a small scaled model is an effective approach to predict the dynamic response of full scale structure under blast loadings. However, the geometric dimensions of specimens cannot simply comply with complete geometrical similarity due to manufacture or test restrictions. It would result in the difference structural performance between the full and small scaled models. This paper proposed a corrected similarity relationship of the dynamic behaviour between prototype and replica of stiffened plates subjected to blast load, in which both the thickness of the plate and the configuration (cross-sectional shape) of stiffeners are distortedly scaled-down (double distorted geometric scaling factors). Firstly, based on the mesh convergence study and comparing with results from experimental tests, a numerical method in predicting the confined blast load and dynamic response of structure was verified, which provides a reliable means to determine the dynamic behaviour of stiffened plate designed by the corrected similarity criterion of this paper. Then, the influence of altering the stiffener configuration on the dynamic response of stiffened plates was analysed and on the basis of it, a criterion for scaling the stiffener is proposed to help design a stiffener-distorted model from prototype structure. In addition, a method for scaling the double-parameter distortedly small scaled model is proposed to predict the dynamic response of the prototype. Finally, two sets of examples of both the small size and prototype stiffened structures subjected to blast load were analysed by using the presented method. It is shown that the replica developed by applying the present method is able to accurately predict the behaviour of the full-size stiffened plates, even when the thickness of the plate and the configuration of the stiffeners are distortedly scaling down with different factors.
Highlights Corrected method for scaling the dynamic response of stiffened plate subjected to blast load is proposed and verified. A meshing scheme of computational domain for calculating the propagation of shockwave in 2D and 3D space is presented. A verified numerical method in predicting the confined blast load and dynamic response of stiffened plate is presented. Rapid and accurate assessment of dynamic response of steel plates under blast by using small scale model can be achieved.
Corrected method for scaling the dynamic response of stiffened plate subjected to blast load
Kong, Xiangshao (Autor:in) / Zhou, Hu (Autor:in) / Kuang, Zheng (Autor:in) / Zheng, Cheng (Autor:in) / Li, Xiao (Autor:in) / Wu, Weiguo (Autor:in) / Guan, Zhongwei (Autor:in)
Thin-Walled Structures ; 159
14.10.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Dynamic Response on Stiffened Plate Subjected to Air Explosive Loading
| British Library Online Contents | 2011
Response of stiffened and unstiffened plates subjected to blast loading
| British Library Conference Proceedings | 1998
Response of stiffened and unstiffened plates subjected to blast loading
| Online Contents | 1998