Study on carrying capacity and energy absorption characteristics of curved sandwich beam negative stiffness structure
In order to improve the carrying capacity of double curved beams negative stiffness structure composed of two curved beams arranged in parallel, the curved sandwich beam negative stiffness structure was proposed. The design idea was to array the sandwich straight beam between the upper and lower cur...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2025-06-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2025.06.013 |
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| _version_ | 1849691527171801088 |
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| author | JIANG Wei REN Lianling LIU Yanqi SONG Chunfang LU Chunyan |
| author_facet | JIANG Wei REN Lianling LIU Yanqi SONG Chunfang LU Chunyan |
| author_sort | JIANG Wei |
| collection | DOAJ |
| description | In order to improve the carrying capacity of double curved beams negative stiffness structure composed of two curved beams arranged in parallel, the curved sandwich beam negative stiffness structure was proposed. The design idea was to array the sandwich straight beam between the upper and lower curved beams of the double curved beam negative stiffness structure, and the bearing capacity and energy absorption characteristics were studied systematically. Firstly, the negative stiffness structure model was fabricated using 3D printing technology and silicone emolding process, the compressive mechanical response of the curved sandwich beam and double curved beam negative stiffness structure was compared and analyzed by quasi-static compression experiment, and the reliability of the finite element simulation model was verified. Then, the influence of structural parameters (width, spacing, height and angle) of the sandwich straight beam on the bearing capacity and energy absorption characteristics of the negative stiffness structure was studied by simulation. The results indicate that the introduction of the sandwich significantly enhances the load-bearing capacity of the double curved beam negative stiffness structure. Compared with the spacing and angle of the sandwich straight beam, increasing the width and height of the sandwich straight beams can notably enhance the load-bearing capacity and energy absorption capacity of the structure. |
| format | Article |
| id | doaj-art-aac7367986a34b44a0156bbb40b1b9b9 |
| institution | DOAJ |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2025-06-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-aac7367986a34b44a0156bbb40b1b9b92025-08-20T03:20:59ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692025-06-0147106117109626135Study on carrying capacity and energy absorption characteristics of curved sandwich beam negative stiffness structureJIANG WeiREN LianlingLIU YanqiSONG ChunfangLU ChunyanIn order to improve the carrying capacity of double curved beams negative stiffness structure composed of two curved beams arranged in parallel, the curved sandwich beam negative stiffness structure was proposed. The design idea was to array the sandwich straight beam between the upper and lower curved beams of the double curved beam negative stiffness structure, and the bearing capacity and energy absorption characteristics were studied systematically. Firstly, the negative stiffness structure model was fabricated using 3D printing technology and silicone emolding process, the compressive mechanical response of the curved sandwich beam and double curved beam negative stiffness structure was compared and analyzed by quasi-static compression experiment, and the reliability of the finite element simulation model was verified. Then, the influence of structural parameters (width, spacing, height and angle) of the sandwich straight beam on the bearing capacity and energy absorption characteristics of the negative stiffness structure was studied by simulation. The results indicate that the introduction of the sandwich significantly enhances the load-bearing capacity of the double curved beam negative stiffness structure. Compared with the spacing and angle of the sandwich straight beam, increasing the width and height of the sandwich straight beams can notably enhance the load-bearing capacity and energy absorption capacity of the structure.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2025.06.013Curved sandwich beamNegative stiffness structureQuasi-static compressionCarrying capacityEnergy absorption characteristic |
| spellingShingle | JIANG Wei REN Lianling LIU Yanqi SONG Chunfang LU Chunyan Study on carrying capacity and energy absorption characteristics of curved sandwich beam negative stiffness structure Jixie qiangdu Curved sandwich beam Negative stiffness structure Quasi-static compression Carrying capacity Energy absorption characteristic |
| title | Study on carrying capacity and energy absorption characteristics of curved sandwich beam negative stiffness structure |
| title_full | Study on carrying capacity and energy absorption characteristics of curved sandwich beam negative stiffness structure |
| title_fullStr | Study on carrying capacity and energy absorption characteristics of curved sandwich beam negative stiffness structure |
| title_full_unstemmed | Study on carrying capacity and energy absorption characteristics of curved sandwich beam negative stiffness structure |
| title_short | Study on carrying capacity and energy absorption characteristics of curved sandwich beam negative stiffness structure |
| title_sort | study on carrying capacity and energy absorption characteristics of curved sandwich beam negative stiffness structure |
| topic | Curved sandwich beam Negative stiffness structure Quasi-static compression Carrying capacity Energy absorption characteristic |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2025.06.013 |
| work_keys_str_mv | AT jiangwei studyoncarryingcapacityandenergyabsorptioncharacteristicsofcurvedsandwichbeamnegativestiffnessstructure AT renlianling studyoncarryingcapacityandenergyabsorptioncharacteristicsofcurvedsandwichbeamnegativestiffnessstructure AT liuyanqi studyoncarryingcapacityandenergyabsorptioncharacteristicsofcurvedsandwichbeamnegativestiffnessstructure AT songchunfang studyoncarryingcapacityandenergyabsorptioncharacteristicsofcurvedsandwichbeamnegativestiffnessstructure AT luchunyan studyoncarryingcapacityandenergyabsorptioncharacteristicsofcurvedsandwichbeamnegativestiffnessstructure |