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Numerical Calculation of Concrete Slab Response to Blast Loading

Transactions of Tianjin University 2006年第B9期12卷 94-99页

作者： ZHOU Xiaoqing HAO Hong KUZNETSOV Valerian A WASCHL John School of Civil and Resource Engineering The University of Western Australia Australia Weapons System Division Defence Science and Technology Organisation Department of Defence Australia

In the present paper, a dynamic plastic damage model for concrete has been employed to estimate responses of a reinforced concrete slab subjected to blast loading. The interaction between the blast wave and the concrete slab is considered in 3D simulation. In the first stage, the initial detonation and blast wave propagation is modelled in 2D simulation before the blast wave reaches the concrete slab, then the results obtained from 2D calculation are remapped to a 3D model. The calculated blast load is compared with that obtained from TM5-1300. Numerical results of the concrete slab response are compared with the explosive test carried out- in the Weapons System Division, Defence Science and Technology Organisation, Department of Defence, Australia.

关键词：爆炸负载损害混凝土 3D模拟

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Numerical Simulation of Concrete Plate Damaged Under Explosive Loading

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Transactions of Tianjin University 2006年第B9期12卷 158-160页

作者： HUAN Shi JIANG Guoping Chen Shengming TANG Xiangqian Earthquake Engineering Research Test Center Guangzhou University Guangzhou 510405 China Central South Forestry University Changsha 410082 China

The grisliness after-effects can be induced by explosion accident with the collapsing of the structures, the demolishing of the equipments and the casualty of the human beings. Isolation belt constructed between the blast point and the construction is one of the useful design schemes for blast resistance. The nonlinear procedure ANSYS/LSDYNA970 is used to simulate the contact detonation and the isolation belt of blast resistance filled with the air or water respectively. The results indicate that the maximal damage can be caused by the contact detonation, and the isolation belt of blast resistent filled with water can reduce the damage greatly.

关键词：混凝土爆炸负载状态方程数字模拟结构

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Numerical Simulation of the Flat Ribbon Wound Explosion Containment Vessels Subjected to Internal Blast Loading

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Transactions of Tianjin University 2006年第B9期12卷 223-227页

作者： SONG Yanze LI Zhiqiang ZHAO Longmao ZHENG Jinyang Institute of Applied Mechanics Taiyuan University of Technology Taiyuan 030024 China Institute of Chemical Machinery and Equipment Zhejiang University Hangzhou 310037 China

In order to constitute engineering design methods of the flat ribbon wound explosion containment vessels, the dynamic response of such vessels subjected to internal explosion loading is simulated using LS-DYNA3D. Three winding angles, 10°, 15°and 20°, are considered. It is shown that among ribbon vessels investigated, the center displacement of outermost ribbons of the vessel with 10°winding angle is the smallest under the same blast loading. The response of vessels loaded in inner core is local. From the center of the cylindrical shell to the bottom cover, the maximum strain gradually decreases. The ribbons are subjected to tension in the length direction and compression in the width direction. Blasting shock energy concentrates on where is close to center section of blasting. For comparison, numerical simulation of a monobloc thick-walled explosion containment vessel is also investigated. It can be found that the biggest deformation of the flat ribbon wound explosion containment vessels is bigger than that of the monobloc thick-walled explosion containment vessel in the center section of blasting under the same TNT. Numerical results are approximately in agreement with experimental ones. It is proved that the ribbon vessels have the valuable properties of ' leak before burst at worst' compared with the monobloc vessels through numerical simulation.

关键词：平带击爆安全壳爆炸负载动态响应数字模拟

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