Factors influencing impact force profile and measurement accuracy in drop weight impact tests
Drop weight tests on RC beams have been intensively reported in literature. Load cells are commonly used to measure the impact force acting on the beam. Different researchers adopted different configurations, e.g., location of load cells in the test, which could affect the impact load measurement. A...
| Main Authors: | , , |
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| Format: | Journal Article |
| Language: | English |
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PERGAMON-ELSEVIER SCIENCE LTD
2020
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| Online Access: | http://purl.org/au-research/grants/arc/FL180100196 http://hdl.handle.net/20.500.11937/91663 |
| _version_ | 1848765572006805504 |
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| author | Li, H. Chen, Wensu Hao, Hong |
| author_facet | Li, H. Chen, Wensu Hao, Hong |
| author_sort | Li, H. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Drop weight tests on RC beams have been intensively reported in literature. Load cells are commonly used to measure the impact force acting on the beam. Different researchers adopted different configurations, e.g., location of load cells in the test, which could affect the impact load measurement. Although various impact force profiles have been reported by different researchers, there is no systematic study regarding the influences of the test setup on the measured impact forces. Therefore, this study numerically investigates the influences of test setups on impact force measurement accuracy and impact force profile of RC beam under drop weight impact. It is found that when the load cell is embedded into drop weight, the mass distribution of drop weight causes the measured impact force to deviate from the actual contact force acting on the beam. To obtain the true impact force recorded by the load cell mounted at the rear of drop weight head, the drop weight mass ratio αd (i.e., mass of the drop-weight to mass of the head) should be lower than 20. Placing load cell between drop weight and beam changes the local contact stiffness of impact zone and thus leads to different impact force profiles. In addition, the drop weight to beam mass ratio within the range of 0.5 and 4.0 affects the relative velocity between drop weight and beam after the first impulse and hence results in different impact force profiles. |
| first_indexed | 2025-11-14T11:37:23Z |
| format | Journal Article |
| id | curtin-20.500.11937-91663 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:37:23Z |
| publishDate | 2020 |
| publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-916632023-05-23T09:02:20Z Factors influencing impact force profile and measurement accuracy in drop weight impact tests Li, H. Chen, Wensu Hao, Hong Science & Technology Technology Engineering, Mechanical Mechanics Engineering Drop weight Load cell Mass ratio Impact force profile RC beam REINFORCED-CONCRETE BEAMS RC BEAMS NUMERICAL-SIMULATION DYNAMIC-BEHAVIOR PERFORMANCE VELOCITY COLUMNS MODEL RESISTANCE RESPONSES Drop weight tests on RC beams have been intensively reported in literature. Load cells are commonly used to measure the impact force acting on the beam. Different researchers adopted different configurations, e.g., location of load cells in the test, which could affect the impact load measurement. Although various impact force profiles have been reported by different researchers, there is no systematic study regarding the influences of the test setup on the measured impact forces. Therefore, this study numerically investigates the influences of test setups on impact force measurement accuracy and impact force profile of RC beam under drop weight impact. It is found that when the load cell is embedded into drop weight, the mass distribution of drop weight causes the measured impact force to deviate from the actual contact force acting on the beam. To obtain the true impact force recorded by the load cell mounted at the rear of drop weight head, the drop weight mass ratio αd (i.e., mass of the drop-weight to mass of the head) should be lower than 20. Placing load cell between drop weight and beam changes the local contact stiffness of impact zone and thus leads to different impact force profiles. In addition, the drop weight to beam mass ratio within the range of 0.5 and 4.0 affects the relative velocity between drop weight and beam after the first impulse and hence results in different impact force profiles. 2020 Journal Article http://hdl.handle.net/20.500.11937/91663 10.1016/j.ijimpeng.2020.103688 English http://purl.org/au-research/grants/arc/FL180100196 PERGAMON-ELSEVIER SCIENCE LTD fulltext |
| spellingShingle | Science & Technology Technology Engineering, Mechanical Mechanics Engineering Drop weight Load cell Mass ratio Impact force profile RC beam REINFORCED-CONCRETE BEAMS RC BEAMS NUMERICAL-SIMULATION DYNAMIC-BEHAVIOR PERFORMANCE VELOCITY COLUMNS MODEL RESISTANCE RESPONSES Li, H. Chen, Wensu Hao, Hong Factors influencing impact force profile and measurement accuracy in drop weight impact tests |
| title | Factors influencing impact force profile and measurement accuracy in drop weight impact tests |
| title_full | Factors influencing impact force profile and measurement accuracy in drop weight impact tests |
| title_fullStr | Factors influencing impact force profile and measurement accuracy in drop weight impact tests |
| title_full_unstemmed | Factors influencing impact force profile and measurement accuracy in drop weight impact tests |
| title_short | Factors influencing impact force profile and measurement accuracy in drop weight impact tests |
| title_sort | factors influencing impact force profile and measurement accuracy in drop weight impact tests |
| topic | Science & Technology Technology Engineering, Mechanical Mechanics Engineering Drop weight Load cell Mass ratio Impact force profile RC beam REINFORCED-CONCRETE BEAMS RC BEAMS NUMERICAL-SIMULATION DYNAMIC-BEHAVIOR PERFORMANCE VELOCITY COLUMNS MODEL RESISTANCE RESPONSES |
| url | http://purl.org/au-research/grants/arc/FL180100196 http://hdl.handle.net/20.500.11937/91663 |