根据已报道的二维流固耦合数值模拟结果,建立了经缓冲橡胶整形后的单炸药条载荷模型.将炸药条载荷叠加后直接施加在圆柱壳表面,进行二维解耦模拟,得到了与流固耦合模拟基本吻合的应力结果.在此基础上,对19条炸药条加载φ265 mm×380 mm圆柱壳进行了三维解耦模拟,并采用相同状态的实验予以验证.结果表明,特征点应变响应吻合较好,验证了炸药条加载圆柱壳解耦数值模拟的有效性,为大量工况数值分析、提高建模和计算效率奠定了基础.%According to the previous simulation results of two-dimensional fluid-structure interaction, the model of impulsive load generated by a single explosive rod and shaped by the buffer is built. Then the loads generated by multiple explosive rods are superposed and applied on the surface of the cylindrical shell,and a two-dimensional decoupled simulation is performed. The results basically agree with those of the fluid-structure interaction simulation. Based on that,a three-dimensional decoupled simulation of the φ265 mm × 380 mm cylindrical shell loaded by 19 explosive rods is accomplished. Meanwhile, the corresponding test is performed. There shows a good agreement between the three-dimensional numerical and tested strain histories at typical locations. These results prove the effectiveness of decoupled numerical simulation and provide a foundation for improving the modeling and computational efficiency in performing a large number of numerical simulations.
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