{"title":"生物启发的珍珠质陶瓷/聚脲交错复合结构的弹道特性","authors":"","doi":"10.1016/j.ijimpeng.2024.105137","DOIUrl":null,"url":null,"abstract":"<div><div>We proposed a bioinspired ceramic/polyurea composite plate that draws on a “brick-mortar” arrangement of nacre layer, with a periodic three-dimensional structure and interlayers polyurea elastomers. We fired a 12.7 mm armor-piercing incendiary bullet using a ballistic gun to conduct depth-of-penetration (DOP) experiments. We analyzed the damage, fracture morphology, and residual DOP of ceramic/polyurea-staggered composite structures (CPSCS), with a theoretical prediction model for the residual DOP. Using the adaptive FEM-SPH algorithm, we compared the damage morphology of CPSCSs. We analyzed projectile penetration process and summarized four toughening modes using stress wave propagation. Based on simulation fitting and theoretical calculations, we obtained the residual DOP curves at different projectile velocities and analyzed the toughening effect of the CPSCSs through the energy dissipation of each structural component. When the areal density was the same, the residual DOP of the CPSCSs decreased by 33.9 %, and the critical velocity theoretically increased by 32.72 %. The error between the model calculations and experimental results was 11 %. The CPSCSs enabled the ceramic to increase the energy absorption efficiency by 179.70 %. With the same structural form, changing the thickness of only one component did not have the same effect on the structural energy-absorption efficiency as changing the entire form.</div></div>","PeriodicalId":50318,"journal":{"name":"International Journal of Impact Engineering","volume":null,"pages":null},"PeriodicalIF":5.1000,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Ballistic properties of bioinspired nacre-like ceramic/polyurea staggered composite structures\",\"authors\":\"\",\"doi\":\"10.1016/j.ijimpeng.2024.105137\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>We proposed a bioinspired ceramic/polyurea composite plate that draws on a “brick-mortar” arrangement of nacre layer, with a periodic three-dimensional structure and interlayers polyurea elastomers. We fired a 12.7 mm armor-piercing incendiary bullet using a ballistic gun to conduct depth-of-penetration (DOP) experiments. We analyzed the damage, fracture morphology, and residual DOP of ceramic/polyurea-staggered composite structures (CPSCS), with a theoretical prediction model for the residual DOP. Using the adaptive FEM-SPH algorithm, we compared the damage morphology of CPSCSs. We analyzed projectile penetration process and summarized four toughening modes using stress wave propagation. Based on simulation fitting and theoretical calculations, we obtained the residual DOP curves at different projectile velocities and analyzed the toughening effect of the CPSCSs through the energy dissipation of each structural component. When the areal density was the same, the residual DOP of the CPSCSs decreased by 33.9 %, and the critical velocity theoretically increased by 32.72 %. The error between the model calculations and experimental results was 11 %. The CPSCSs enabled the ceramic to increase the energy absorption efficiency by 179.70 %. With the same structural form, changing the thickness of only one component did not have the same effect on the structural energy-absorption efficiency as changing the entire form.</div></div>\",\"PeriodicalId\":50318,\"journal\":{\"name\":\"International Journal of Impact Engineering\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.1000,\"publicationDate\":\"2024-10-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Impact Engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0734743X24002628\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Impact Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0734743X24002628","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
Ballistic properties of bioinspired nacre-like ceramic/polyurea staggered composite structures
We proposed a bioinspired ceramic/polyurea composite plate that draws on a “brick-mortar” arrangement of nacre layer, with a periodic three-dimensional structure and interlayers polyurea elastomers. We fired a 12.7 mm armor-piercing incendiary bullet using a ballistic gun to conduct depth-of-penetration (DOP) experiments. We analyzed the damage, fracture morphology, and residual DOP of ceramic/polyurea-staggered composite structures (CPSCS), with a theoretical prediction model for the residual DOP. Using the adaptive FEM-SPH algorithm, we compared the damage morphology of CPSCSs. We analyzed projectile penetration process and summarized four toughening modes using stress wave propagation. Based on simulation fitting and theoretical calculations, we obtained the residual DOP curves at different projectile velocities and analyzed the toughening effect of the CPSCSs through the energy dissipation of each structural component. When the areal density was the same, the residual DOP of the CPSCSs decreased by 33.9 %, and the critical velocity theoretically increased by 32.72 %. The error between the model calculations and experimental results was 11 %. The CPSCSs enabled the ceramic to increase the energy absorption efficiency by 179.70 %. With the same structural form, changing the thickness of only one component did not have the same effect on the structural energy-absorption efficiency as changing the entire form.
期刊介绍:
The International Journal of Impact Engineering, established in 1983 publishes original research findings related to the response of structures, components and materials subjected to impact, blast and high-rate loading. Areas relevant to the journal encompass the following general topics and those associated with them:
-Behaviour and failure of structures and materials under impact and blast loading
-Systems for protection and absorption of impact and blast loading
-Terminal ballistics
-Dynamic behaviour and failure of materials including plasticity and fracture
-Stress waves
-Structural crashworthiness
-High-rate mechanical and forming processes
-Impact, blast and high-rate loading/measurement techniques and their applications