2008 Vol. 28, No. 3
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2008, 28(3): 193-199.
doi: 10.11883/1001-1455(2008)03-0193-07
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Abstract:
The Hopkinson pressure bar tests were performed to explore the spall characteristics of concrete materials by analyzing the strain waves of the buffer bar. The experimental results, for concretes with different spall strengths at different load rates...
The Hopkinson pressure bar tests were performed to explore the spall characteristics of concrete materials by analyzing the strain waves of the buffer bar. The experimental results, for concretes with different spall strengths at different load rates...
2008, 28(3): 200-206.
doi: 10.11883/1001-1455(2008)03-0200-07
Abstract:
The MTS810 and SHPB were used to experimentally study the quasi-static and dynamic mechanical properties of Kevlar/epoxy composite laminates. Effects of the strain rate and lay-up types of fiber on the mechanical behaviors of laminated Kevlar were di...
The MTS810 and SHPB were used to experimentally study the quasi-static and dynamic mechanical properties of Kevlar/epoxy composite laminates. Effects of the strain rate and lay-up types of fiber on the mechanical behaviors of laminated Kevlar were di...
2008, 28(3): 207-302.
doi: 10.11883/1001-1455(2008)03-0207-06
Abstract:
A new type tandem shaped charge warhead, which produces a high-velocity jet and low-velocity jetting projectiles, was proposed based on the characteristics of a reinforce concrete target. The formation processes of the prepositioned charge and rear-m...
A new type tandem shaped charge warhead, which produces a high-velocity jet and low-velocity jetting projectiles, was proposed based on the characteristics of a reinforce concrete target. The formation processes of the prepositioned charge and rear-m...
2008, 28(3): 213-219.
doi: 10.11883/1001-1455(2008)03-0213-07
Abstract:
An experimental model, in which explosive strips were placed along the welds on single side or on double sides, was developed to simulate the circumferential weld of a large pressure-resistant cylindrical shell according to its welding craft and to e...
An experimental model, in which explosive strips were placed along the welds on single side or on double sides, was developed to simulate the circumferential weld of a large pressure-resistant cylindrical shell according to its welding craft and to e...
2008, 28(3): 220-224.
doi: 10.11883/1001-1455(2008)03-0220-05
Abstract:
Preheated explosive consolidation (PHEC) experiments were performed on the -Al2O3 nanometer ceramic powders under different explosive pressures at the preheated temperature of about 0.5Tm. The crystal types for the studied ceramic powders were analyz...
Preheated explosive consolidation (PHEC) experiments were performed on the -Al2O3 nanometer ceramic powders under different explosive pressures at the preheated temperature of about 0.5Tm. The crystal types for the studied ceramic powders were analyz...
2008, 28(3): 225-228.
doi: 10.11883/1001-1455(2008)03-0225-04
Abstract:
An improved evaluation method is discussed, which can be used to optimize the blasting plans by using the fuzzy analytic hierarchy process (FAHP) with the real coding-based accelerating genetic algorithm (RAGA). Fuzzy preferential relation matrixes a...
An improved evaluation method is discussed, which can be used to optimize the blasting plans by using the fuzzy analytic hierarchy process (FAHP) with the real coding-based accelerating genetic algorithm (RAGA). Fuzzy preferential relation matrixes a...
2008, 28(3): 229-225.
doi: 10.11883/1001-1455(2008)03-0229-07
Abstract:
A parallel computation program for reactive flow was developed based on two-dimensional unstructured grid by adopting the modified CE/SE (space-time conservation element and solution element) method and parallel domain decomposition technology. The c...
A parallel computation program for reactive flow was developed based on two-dimensional unstructured grid by adopting the modified CE/SE (space-time conservation element and solution element) method and parallel domain decomposition technology. The c...
2008, 28(3): 236-242.
doi: 10.11883/1001-1455(2008)03-0236-07
Abstract:
The 3D finite element analysis model for multi-layered spaced beam-edge structure under bird impact is established by taking the typical fuselage support structure of a certain type airplane as the object. Numerical results of the crucial parts durin...
The 3D finite element analysis model for multi-layered spaced beam-edge structure under bird impact is established by taking the typical fuselage support structure of a certain type airplane as the object. Numerical results of the crucial parts durin...
2008, 28(3): 243-251.
doi: 10.11883/1001-1455(2008)03-0243-09
Abstract:
The dynamic response of an elastic-plastic cantilever beam subjected to step loading at its tip was studied numerically by employing large deflection governing equations and solving them expressed in the finite-difference form. The deformation mechan...
The dynamic response of an elastic-plastic cantilever beam subjected to step loading at its tip was studied numerically by employing large deflection governing equations and solving them expressed in the finite-difference form. The deformation mechan...
2008, 28(3): 252-260.
doi: 10.11883/1001-1455(2008)03-0252-09
Abstract:
A series of normal and oblique penetration experiments were performed to explore the dynamic response of slender projectiles penetrating into typically hard targets. In the experiments, the parameters of the ogive-nose steel projectiles are as follow...
A series of normal and oblique penetration experiments were performed to explore the dynamic response of slender projectiles penetrating into typically hard targets. In the experiments, the parameters of the ogive-nose steel projectiles are as follow...
2008, 28(3): 261-264.
doi: 10.11883/1001-1455(2008)03-0261-04
Abstract:
A one-dimensional, magnetohydrodynamic model, in which the Ohmic heating is considered, was proposed to numerically calculate the experiment Z-452 carried out on the Z machine at Sandia National Laboratories. The computed free-surface velocities of t...
A one-dimensional, magnetohydrodynamic model, in which the Ohmic heating is considered, was proposed to numerically calculate the experiment Z-452 carried out on the Z machine at Sandia National Laboratories. The computed free-surface velocities of t...
2008, 28(3): 265-270.
doi: 10.11883/1001-1455(2008)03-0265-06
Abstract:
Aiming at the existing problem in blasting vibration velocity calculation, a calculation method by two steps is proposed, in which the shock pressure induced by explosion is first calculated in blasting near region, then the particle vibration veloci...
Aiming at the existing problem in blasting vibration velocity calculation, a calculation method by two steps is proposed, in which the shock pressure induced by explosion is first calculated in blasting near region, then the particle vibration veloci...
2008, 28(3): 271-275.
doi: 10.11883/1001-1455(2008)03-0271-05
Abstract:
The finite element numerical method is used to study dynamic buckling of cylindrical shells under elastic compression waves. The finite element characteristic equations are derived on the basis of the adjacent-equilibrium criterion and the stress wav...
The finite element numerical method is used to study dynamic buckling of cylindrical shells under elastic compression waves. The finite element characteristic equations are derived on the basis of the adjacent-equilibrium criterion and the stress wav...
2008, 28(3): 276-282.
doi: 10.11883/1001-1455(2008)03-0276-07
Abstract:
Water-entry impact and slamming phenomena fall into complicated transient physical problems whether in theoretical analysis or in numerical simulation. Developments of theory, experiment and numerical simulation on water-entry impact problems were su...
Water-entry impact and slamming phenomena fall into complicated transient physical problems whether in theoretical analysis or in numerical simulation. Developments of theory, experiment and numerical simulation on water-entry impact problems were su...
2008, 28(3): 283-288.
doi: 10.11883/1001-1455(2008)03-0283-06
Abstract:
The study aimed to explore the gateway design plan for civil defense structure of a typical garage closed up by bonded steel plates. According to this design plan, an experimental model for the steel plate-to-concrete bonded joint structure was propo...
The study aimed to explore the gateway design plan for civil defense structure of a typical garage closed up by bonded steel plates. According to this design plan, an experimental model for the steel plate-to-concrete bonded joint structure was propo...
