Experimental Research on Dynamic Behavior of Circular Mild Steel Plates with Surface Cracks Subjected to Repeated Impacts in Low Temperature
Experimental investigations on the mechanical responses of fully clamped circular plates with prefabricated crack at room temperature and low temperature have been conducted. Initial cracks with different lengths were prefabricated by the electrical discharge machining method. Low ambient temperatur...
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ftdoajarticles:oai:doaj.org/article:ce357c739ec54167bc9a85d551c472cd 2023-05-15T15:07:01+02:00 Experimental Research on Dynamic Behavior of Circular Mild Steel Plates with Surface Cracks Subjected to Repeated Impacts in Low Temperature Yang Zeng Hao Chen Rong Yu Zhiyuan Shen Zixian Yu Jingxi Liu 2020-01-01T00:00:00Z https://doi.org/10.1155/2020/3713709 https://doaj.org/article/ce357c739ec54167bc9a85d551c472cd EN eng Hindawi Limited http://dx.doi.org/10.1155/2020/3713709 https://doaj.org/toc/1070-9622 https://doaj.org/toc/1875-9203 1070-9622 1875-9203 doi:10.1155/2020/3713709 https://doaj.org/article/ce357c739ec54167bc9a85d551c472cd Shock and Vibration, Vol 2020 (2020) Physics QC1-999 article 2020 ftdoajarticles https://doi.org/10.1155/2020/3713709 2022-12-31T10:23:00Z Experimental investigations on the mechanical responses of fully clamped circular plates with prefabricated crack at room temperature and low temperature have been conducted. Initial cracks with different lengths were prefabricated by the electrical discharge machining method. Low ambient temperature was created by the liquid nitrogen in a low-temperature chamber, and a dropping hammer was dropped from the same height with a constant impact energy of 5 J to carry out the repeated impact. Experimental test results show that the prefabricated crack has a significant influence on the mechanical behavior of the thin plates. The maximum impact force decreases with increase of the crack length, and the threshold impact number until fracture decreases with increase of the crack length. It is also observed from the test results that the maximum impact force increases with decrease of the temperature, while threshold impact number until fracture and the plastic permanent deformation decreases due to the brittleness of the material in low temperature. The present investigations provide useful insight into the failure mechanism of the clamped thin plate with initial crack under low-velocity repeated impacts in low temperature, which will lead to a guideline for research and design of marine structures in the arctic area. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Shock and Vibration 2020 1 11 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 |
spellingShingle |
Physics QC1-999 Yang Zeng Hao Chen Rong Yu Zhiyuan Shen Zixian Yu Jingxi Liu Experimental Research on Dynamic Behavior of Circular Mild Steel Plates with Surface Cracks Subjected to Repeated Impacts in Low Temperature |
topic_facet |
Physics QC1-999 |
description |
Experimental investigations on the mechanical responses of fully clamped circular plates with prefabricated crack at room temperature and low temperature have been conducted. Initial cracks with different lengths were prefabricated by the electrical discharge machining method. Low ambient temperature was created by the liquid nitrogen in a low-temperature chamber, and a dropping hammer was dropped from the same height with a constant impact energy of 5 J to carry out the repeated impact. Experimental test results show that the prefabricated crack has a significant influence on the mechanical behavior of the thin plates. The maximum impact force decreases with increase of the crack length, and the threshold impact number until fracture decreases with increase of the crack length. It is also observed from the test results that the maximum impact force increases with decrease of the temperature, while threshold impact number until fracture and the plastic permanent deformation decreases due to the brittleness of the material in low temperature. The present investigations provide useful insight into the failure mechanism of the clamped thin plate with initial crack under low-velocity repeated impacts in low temperature, which will lead to a guideline for research and design of marine structures in the arctic area. |
format |
Article in Journal/Newspaper |
author |
Yang Zeng Hao Chen Rong Yu Zhiyuan Shen Zixian Yu Jingxi Liu |
author_facet |
Yang Zeng Hao Chen Rong Yu Zhiyuan Shen Zixian Yu Jingxi Liu |
author_sort |
Yang Zeng |
title |
Experimental Research on Dynamic Behavior of Circular Mild Steel Plates with Surface Cracks Subjected to Repeated Impacts in Low Temperature |
title_short |
Experimental Research on Dynamic Behavior of Circular Mild Steel Plates with Surface Cracks Subjected to Repeated Impacts in Low Temperature |
title_full |
Experimental Research on Dynamic Behavior of Circular Mild Steel Plates with Surface Cracks Subjected to Repeated Impacts in Low Temperature |
title_fullStr |
Experimental Research on Dynamic Behavior of Circular Mild Steel Plates with Surface Cracks Subjected to Repeated Impacts in Low Temperature |
title_full_unstemmed |
Experimental Research on Dynamic Behavior of Circular Mild Steel Plates with Surface Cracks Subjected to Repeated Impacts in Low Temperature |
title_sort |
experimental research on dynamic behavior of circular mild steel plates with surface cracks subjected to repeated impacts in low temperature |
publisher |
Hindawi Limited |
publishDate |
2020 |
url |
https://doi.org/10.1155/2020/3713709 https://doaj.org/article/ce357c739ec54167bc9a85d551c472cd |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Shock and Vibration, Vol 2020 (2020) |
op_relation |
http://dx.doi.org/10.1155/2020/3713709 https://doaj.org/toc/1070-9622 https://doaj.org/toc/1875-9203 1070-9622 1875-9203 doi:10.1155/2020/3713709 https://doaj.org/article/ce357c739ec54167bc9a85d551c472cd |
op_doi |
https://doi.org/10.1155/2020/3713709 |
container_title |
Shock and Vibration |
container_volume |
2020 |
container_start_page |
1 |
op_container_end_page |
11 |
_version_ |
1766338591513903104 |