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...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2020/3713709 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832567405493092352 |
|---|---|
| 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 |
| collection | DOAJ |
| 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 |
| id | doaj-art-ce357c739ec54167bc9a85d551c472cd |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-ce357c739ec54167bc9a85d551c472cd2025-02-03T01:01:36ZengWileyShock and Vibration1070-96221875-92032020-01-01202010.1155/2020/37137093713709Experimental Research on Dynamic Behavior of Circular Mild Steel Plates with Surface Cracks Subjected to Repeated Impacts in Low TemperatureYang Zeng0Hao Chen1Rong Yu2Zhiyuan Shen3Zixian Yu4Jingxi Liu5School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaSchool of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaSchool of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaSchool of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaSchool of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaSchool of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaExperimental 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.http://dx.doi.org/10.1155/2020/3713709 |
| spellingShingle | 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 Shock and Vibration |
| title | 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_short | 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 |
| url | http://dx.doi.org/10.1155/2020/3713709 |
| work_keys_str_mv | AT yangzeng experimentalresearchondynamicbehaviorofcircularmildsteelplateswithsurfacecrackssubjectedtorepeatedimpactsinlowtemperature AT haochen experimentalresearchondynamicbehaviorofcircularmildsteelplateswithsurfacecrackssubjectedtorepeatedimpactsinlowtemperature AT rongyu experimentalresearchondynamicbehaviorofcircularmildsteelplateswithsurfacecrackssubjectedtorepeatedimpactsinlowtemperature AT zhiyuanshen experimentalresearchondynamicbehaviorofcircularmildsteelplateswithsurfacecrackssubjectedtorepeatedimpactsinlowtemperature AT zixianyu experimentalresearchondynamicbehaviorofcircularmildsteelplateswithsurfacecrackssubjectedtorepeatedimpactsinlowtemperature AT jingxiliu experimentalresearchondynamicbehaviorofcircularmildsteelplateswithsurfacecrackssubjectedtorepeatedimpactsinlowtemperature |