Dynamic Response of Copper Plates Subjected to Underwater Impulsive Loading
| Autor: | Han Liu, Dalin Xiang, Pengwan Chen, Jili Rong, Kaida Dai, Baoqiao Guo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
non-liner dynamic deformation
Digital image correlation Materials science ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION chemistry.chemical_element 02 engineering and technology lcsh:Technology copper plate lcsh:Chemistry 0203 mechanical engineering Deflection (engineering) Tearing 3D digital image correlation General Materials Science Composite material Instrumentation lcsh:QH301-705.5 Strain gauge ComputingMethodologies_COMPUTERGRAPHICS Fluid Flow and Transfer Processes lcsh:T Process Chemistry and Technology General Engineering underwater impulsive loading 021001 nanoscience & nanotechnology Copper lcsh:QC1-999 Computer Science Applications 020303 mechanical engineering & transports TheoryofComputation_MATHEMATICALLOGICANDFORMALLANGUAGES chemistry lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 Deformation (engineering) 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) Intensity (heat transfer) lcsh:Physics Necking |
| Zdroj: | Applied Sciences, Vol 9, Iss 9, p 1927 (2019) Applied Sciences Volume 9 Issue 9 |
| ISSN: | 2076-3417 |
| Popis: | Understanding the mechanical response and failure behaviors of thin plates under impact loading is helpful for the design and improvement of thin plate structures in practical applications. The response of a copper plate subjected to underwater impulsive loading has been studied in fluid-structure interaction (FSI) experiments. Three typical copper plates, (a) without a pre-notch, (b) with a cross-shaped pre-notch (+), and (c) with a ring-shaped pre-notch (○) were selected. A high-speed photography system recorded the full-field shape and displacement profiles of the specimens in real time. The 3D transient deformation fields&rsquo measurements were obtained using a 3D digital image correlation (DIC) technique. Strain results from DIC and the strain gauges technique were in good agreement. A dimensionless deflection was used to analyze the effect of plate thickness and loading intensity on the deformation of the copper plates. The typical failure modes of different copper plates were identified. The test plates exhibited large ductile deformation (mode I ) for copper plates without a pre-notch, and large ductile deformation with local necking (mode I c ), splitting (mode II ), splitting and tearing (mode II c ), and fragment (mode III ) for the copper plate with a pre-notch. |
| Databáze: | OpenAIRE |
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