Effects of Central Cut Width on the Dynamical Characteristics of Box Assembly Structure
An investigation into the Box Assembly with Removable Component (BARC) structure is conducted by utilizing computational simulations and experimental structural testing in order to determine the complex dynamical responses instigated by the central cut of the system. Because the dynamics of the BARC...
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2025-01-01
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| author | Christopher Padilla Antonio Flores Ezekiel Granillo Jonah Madrid Abdessattar Abdelkefi |
| author_facet | Christopher Padilla Antonio Flores Ezekiel Granillo Jonah Madrid Abdessattar Abdelkefi |
| author_sort | Christopher Padilla |
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| description | An investigation into the Box Assembly with Removable Component (BARC) structure is conducted by utilizing computational simulations and experimental structural testing in order to determine the complex dynamical responses instigated by the central cut of the system. Because the dynamics of the BARC system is complex, this study focuses primarily on analyzing the behavior of the box assembly (BA) system. The investigation explores the dynamics of the BA system by varying the central cut widths, ranging from a cut as wide as 0.5” cut to a 0.25” cut system, as well as a 0.1” cut and a system with no cut at all. Experimental testing is performed on each system including a free vibration test using an impact hammer to excite and identify the dominant frequencies of each structure. This testing is followed by pseudo-random vibration tests and swept sinusoidal excitation tests to determine the nonlinear aspects of these systems, such as the possible existence of nonlinear softening, hardening, and/or damping. The results show that nonlinear softening and nonlinear damping are present in each system. The no-cut system demonstrated the highest peak frequencies throughout all the tests, being the most rigid structure. The 0.25” cut system was shown to have the highest peak frequencies among all the cut systems in both the finite elemenet analysis (FEA) and impact testing. This trend did not continue, though, in the random and harmonic testing, possibly due to the added stiffness of the test setup with the slip table and stinger. The results show the importance of accurately measuring the central cut width and how possible geometric uncertainties change the overall dynamical behaviors of complex systems, such as natural characteristics, nonlinear responses, coupling of modes, and oscillating amplitudes. |
| format | Article |
| id | doaj-art-0c62d6ddf9fc4a0a8135c7ed0705515d |
| institution | Kabale University |
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| language | English |
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| spelling | doaj-art-0c62d6ddf9fc4a0a8135c7ed0705515d2025-01-10T13:15:28ZengMDPI AGApplied Sciences2076-34172025-01-0115141710.3390/app15010417Effects of Central Cut Width on the Dynamical Characteristics of Box Assembly StructureChristopher Padilla0Antonio Flores1Ezekiel Granillo2Jonah Madrid3Abdessattar Abdelkefi4Department of Mechanical and Aerospace Engineering, New Mexico State University, Las Cruces, NM 88003, USADepartment of Mechanical and Aerospace Engineering, New Mexico State University, Las Cruces, NM 88003, USADepartment of Mechanical and Aerospace Engineering, New Mexico State University, Las Cruces, NM 88003, USADepartment of Mechanical and Aerospace Engineering, New Mexico State University, Las Cruces, NM 88003, USADepartment of Mechanical and Aerospace Engineering, New Mexico State University, Las Cruces, NM 88003, USAAn investigation into the Box Assembly with Removable Component (BARC) structure is conducted by utilizing computational simulations and experimental structural testing in order to determine the complex dynamical responses instigated by the central cut of the system. Because the dynamics of the BARC system is complex, this study focuses primarily on analyzing the behavior of the box assembly (BA) system. The investigation explores the dynamics of the BA system by varying the central cut widths, ranging from a cut as wide as 0.5” cut to a 0.25” cut system, as well as a 0.1” cut and a system with no cut at all. Experimental testing is performed on each system including a free vibration test using an impact hammer to excite and identify the dominant frequencies of each structure. This testing is followed by pseudo-random vibration tests and swept sinusoidal excitation tests to determine the nonlinear aspects of these systems, such as the possible existence of nonlinear softening, hardening, and/or damping. The results show that nonlinear softening and nonlinear damping are present in each system. The no-cut system demonstrated the highest peak frequencies throughout all the tests, being the most rigid structure. The 0.25” cut system was shown to have the highest peak frequencies among all the cut systems in both the finite elemenet analysis (FEA) and impact testing. This trend did not continue, though, in the random and harmonic testing, possibly due to the added stiffness of the test setup with the slip table and stinger. The results show the importance of accurately measuring the central cut width and how possible geometric uncertainties change the overall dynamical behaviors of complex systems, such as natural characteristics, nonlinear responses, coupling of modes, and oscillating amplitudes.https://www.mdpi.com/2076-3417/15/1/417BARCcut widthFEAexperimental structural dynamicsnonlinear dynamics |
| spellingShingle | Christopher Padilla Antonio Flores Ezekiel Granillo Jonah Madrid Abdessattar Abdelkefi Effects of Central Cut Width on the Dynamical Characteristics of Box Assembly Structure Applied Sciences BARC cut width FEA experimental structural dynamics nonlinear dynamics |
| title | Effects of Central Cut Width on the Dynamical Characteristics of Box Assembly Structure |
| title_full | Effects of Central Cut Width on the Dynamical Characteristics of Box Assembly Structure |
| title_fullStr | Effects of Central Cut Width on the Dynamical Characteristics of Box Assembly Structure |
| title_full_unstemmed | Effects of Central Cut Width on the Dynamical Characteristics of Box Assembly Structure |
| title_short | Effects of Central Cut Width on the Dynamical Characteristics of Box Assembly Structure |
| title_sort | effects of central cut width on the dynamical characteristics of box assembly structure |
| topic | BARC cut width FEA experimental structural dynamics nonlinear dynamics |
| url | https://www.mdpi.com/2076-3417/15/1/417 |
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