Abstract The landing process to an asteroid is discussed with a Nimble Lander. miniature harpoons are chosen as the anchoring device in analysis results provide detailed information of harpoon device. Many different designs have been tested by simulation, best three analyzed for Apophis. Instead modelling anchor rigid cylindrical projectile penetration models, deformation fully considered analy...

We report on the penetration of cylindrical projectiles dropped from rest into a dry, noncohesive granular medium. The cylinder length, diameter, density, and tip shape are all explicitly varied. For deep penetrations, as compared to the cylinder diameter, the data collapse onto a single scaling law that varies as the 1/3 power of the total drop distance, the 1/2 power of cylinder length, and t...

Abstract Ultra-high performance concrete is characterized by its high strength and toughness, ceramsite can absorb energy function as a buffer. Based on the mechanical properties of both, two kinds materials are combined in spatial structure, three structural models, namely, gradient structure group target, double stacked single material designed prepared. Then, dynamic characteristics protecti...

Abstract The penetration of reactive projectile into target is an extremely complex thermomechanical coupling process, and most the researches reveal this mechanism by means experiments. In paper, based on finite element simulation software ANSYS/LS-DYNA, using IGNITION_ANG_GROWTH state equation Null constitutive model, process penetrating numerically modeled, numerical model verified ballistic...

To study the protective performance of ceramic materials against high-speed penetration projectiles, seven ceramic-reactive powder concrete (C-RPC) composite targets were designed. Using a 100/30 mm two-stage light-gas gun, tests performed at 1.4–2.0 km/s. The results showed that depth C-RPC target body first increased and then decreased as speed increased, corresponding reverse was between 174...

A finite cylindrical cavity expansion model for metallic thick targets with planar sizes, composed of ideal elastic-plastic materials, penetration high-speed long rod is presented by using the unified strength theory. Considering lateral boundary and mass abrasion target, resistance depth formulas are proposed, solutions which obtained MATLAB program. Then, a series different criteria-based ana...

Hitherto, studies on impact by non-axisymmetric projectiles with high cross-sectional aspect ratios are limited, yet such cases may occur in a wide range of civil and military applications. A target response to geometry differs from that the extensively studied case axisymmetric projectiles. The focus this study is examine penetration capabilities plate-like various sharpness upon thin metallic...

In order to study the dynamic response associated with impact of a kinetic projectile on internal structure an artificial satellite, we propose configuration non-metallic material wrapping and multiple damage elements. The satellite is simplified as honeycomb sandwich panel multi-layer plates. We carried out ground test finite element simulation, determined lateral effect penetration performanc...