Dynamic response and damage assessment of spherical robot GFRP spherical shell under low velocity impact
-
L. Ma
,
H. Sun
Abstract
In the normal operation of a spherical robot, its spherical shell structure is often accompanied by low velocity impact. At the same time, the spherical shell structure should take into account its protective ability against high strength impact of small probability. Glass fiber reinforced polymer (GFRP), which has high specific strength, specific stiffness, corrosion resistance and an impact energy dissipation coefficient, can be used as the ideal spherical shell material for spherical robots. In this study, the low velocity impact damage of GFRP spherical shell is studied based on the background that a thin-walled shell structure of spherical robot may suffer from large deformation and dynamic load. This study is divided into three aspects: experiment, simulation and calculation. The dynamic response and residual bearing capacity of the GFRP spherical shell is obtained through experiments; the progressive damage model of the composite structure, which demonstrates expounded stress distribution, a structural deformation mode and an energy dissipation mechanism under impact, is established based on the Hashin criterion. Low velocity impact-penetrating failure of the elastic brittle thin-walled GFRP spherical shell is calculated according to the geometrical principle and energy method. In this paper, the material dynamic behavior and impact damage of a GFRP spherical shell are systematically studied. This is of great significance for the development of high-performance spherical robots and the realization of accurate control.
© 2020 by Walter de Gruyter Berlin/Boston
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Articles in the same Issue
- CONTENTS
- Materials Testing
- FACHBEITRÄGE
- New alloy development from modified cast Ni-base superalloy GTD-111 with additions of Al, Ni and/or Co prepared by vacuum arc melting process
- Enhancing a twist beam suspension system conceptual design using population-based optimization methods
- Influence of alumina whisker or nano-carbon contents on the microstructure and mechanical properties of CuZrTiAlNi refractory high entropy alloy composites
- Mechanical properties and fatigue behavior of CO2 laser beam welded armor steel joints
- Microstructure and properties of a laser cladded NiCrBSi alloy coating
- Dynamic response and damage assessment of spherical robot GFRP spherical shell under low velocity impact
- Influence of temperature on structural-phase changes and physical properties of ceramics on the basis of aluminum oxide and silicon
- Effect of the temperature gradient on hot cracking susceptibility for electron beam welding Alloy 247 LC
- Effect of copper or carbon fiber addition to the 3D printing of polylactid samples
- Theoretical evaluation of abrasive wear behavior of B4C/ FeCrC coating layer evaluated by a Taguchi approach
- Effect of the welding parameters on the surface morphology of resistance spot welded AISI 304 stainless steel joints
- Sine-cosine optimization algorithm for the conceptual design of automobile components
- Design and optimization of an electromechanical actuator for the latch of a foldable vehicle seat
- Design and analysis of a pressure vessel according to EU 2014/29
- BEZUGSQUELLEN
- IMPRESSUM
