{"title":"低速冲击下斜面和偏心冲击对 CFRP 层压板的影响","authors":"Kiran Kaware, Mangesh Kotambkar","doi":"10.1007/s40997-024-00778-7","DOIUrl":null,"url":null,"abstract":"<p>Composite structures are widely used in various engineering sectors, such as ships, aerospace, and automobiles due to their specific mechanical properties. In service operations like maintenance (dropping of tools), these structures are often subjected to low velocity impact (LVI), which leads to a decrease in the strength of laminates. Parameters such as fiber orientation, stacking sequence, boundary condition (BC), impactor geometry, and angle of impact affect the performance of composites. Therefore, it is essential to study the response of composites under LVI for different parameters. The role of fiber orientation and geometrical factors (oblique impact, impactor geometry, and off-center loading) on the dynamic response of composites under LVI needs to be investigated. The initial section of the research validates the presented numerical simulation results of reference layup A i.e. [0<sub>2</sub>/45<sub>2</sub>/90<sub>2</sub>/45<sub>2</sub>]<sub>s</sub> with previously published experimental results. In the second part, finite element analysis to study the effect of normal and oblique impact and the effect of off-center loading on three different combinations of CFRP layups under LVI with three nose geometries of the impactor are presented. Simulation performed on CFRP T700GC/M21 material for normal and 45° oblique impacts to study the dynamic response using Abaqus/Explicit modeling software. This parametric study shows that the effects of fiber orientations, oblique impact, and impact location with different geometries of impactors plays an essential role in designing composite structures. Under oblique impact, layup B i.e. [0<sub>2</sub>/90<sub>2</sub>]<sub>2s</sub> exhibits the highest fluctuations in all impactor geometries, which signify intra- and interlaminar failure. Additionally, the hemispherical impactor for layup A shows smooth curves and less fluctuation under off-center loading.</p>","PeriodicalId":49063,"journal":{"name":"Iranian Journal of Science and Technology-Transactions of Mechanical Engineering","volume":"44 1","pages":""},"PeriodicalIF":1.5000,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of Oblique and Off-Center Impact on CFRP Laminate Under Low Velocity Impact\",\"authors\":\"Kiran Kaware, Mangesh Kotambkar\",\"doi\":\"10.1007/s40997-024-00778-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Composite structures are widely used in various engineering sectors, such as ships, aerospace, and automobiles due to their specific mechanical properties. In service operations like maintenance (dropping of tools), these structures are often subjected to low velocity impact (LVI), which leads to a decrease in the strength of laminates. Parameters such as fiber orientation, stacking sequence, boundary condition (BC), impactor geometry, and angle of impact affect the performance of composites. Therefore, it is essential to study the response of composites under LVI for different parameters. The role of fiber orientation and geometrical factors (oblique impact, impactor geometry, and off-center loading) on the dynamic response of composites under LVI needs to be investigated. The initial section of the research validates the presented numerical simulation results of reference layup A i.e. [0<sub>2</sub>/45<sub>2</sub>/90<sub>2</sub>/45<sub>2</sub>]<sub>s</sub> with previously published experimental results. In the second part, finite element analysis to study the effect of normal and oblique impact and the effect of off-center loading on three different combinations of CFRP layups under LVI with three nose geometries of the impactor are presented. Simulation performed on CFRP T700GC/M21 material for normal and 45° oblique impacts to study the dynamic response using Abaqus/Explicit modeling software. This parametric study shows that the effects of fiber orientations, oblique impact, and impact location with different geometries of impactors plays an essential role in designing composite structures. Under oblique impact, layup B i.e. [0<sub>2</sub>/90<sub>2</sub>]<sub>2s</sub> exhibits the highest fluctuations in all impactor geometries, which signify intra- and interlaminar failure. Additionally, the hemispherical impactor for layup A shows smooth curves and less fluctuation under off-center loading.</p>\",\"PeriodicalId\":49063,\"journal\":{\"name\":\"Iranian Journal of Science and Technology-Transactions of Mechanical Engineering\",\"volume\":\"44 1\",\"pages\":\"\"},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2024-05-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Iranian Journal of Science and Technology-Transactions of Mechanical Engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1007/s40997-024-00778-7\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Iranian Journal of Science and Technology-Transactions of Mechanical Engineering","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s40997-024-00778-7","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
Effect of Oblique and Off-Center Impact on CFRP Laminate Under Low Velocity Impact
Composite structures are widely used in various engineering sectors, such as ships, aerospace, and automobiles due to their specific mechanical properties. In service operations like maintenance (dropping of tools), these structures are often subjected to low velocity impact (LVI), which leads to a decrease in the strength of laminates. Parameters such as fiber orientation, stacking sequence, boundary condition (BC), impactor geometry, and angle of impact affect the performance of composites. Therefore, it is essential to study the response of composites under LVI for different parameters. The role of fiber orientation and geometrical factors (oblique impact, impactor geometry, and off-center loading) on the dynamic response of composites under LVI needs to be investigated. The initial section of the research validates the presented numerical simulation results of reference layup A i.e. [02/452/902/452]s with previously published experimental results. In the second part, finite element analysis to study the effect of normal and oblique impact and the effect of off-center loading on three different combinations of CFRP layups under LVI with three nose geometries of the impactor are presented. Simulation performed on CFRP T700GC/M21 material for normal and 45° oblique impacts to study the dynamic response using Abaqus/Explicit modeling software. This parametric study shows that the effects of fiber orientations, oblique impact, and impact location with different geometries of impactors plays an essential role in designing composite structures. Under oblique impact, layup B i.e. [02/902]2s exhibits the highest fluctuations in all impactor geometries, which signify intra- and interlaminar failure. Additionally, the hemispherical impactor for layup A shows smooth curves and less fluctuation under off-center loading.
期刊介绍:
Transactions of Mechanical Engineering is to foster the growth of scientific research in all branches of mechanical engineering and its related grounds and to provide a medium by means of which the fruits of these researches may be brought to the attentionof the world’s scientific communities. The journal has the focus on the frontier topics in the theoretical, mathematical, numerical, experimental and scientific developments in mechanical engineering as well
as applications of established techniques to new domains in various mechanical engineering disciplines such as: Solid Mechanics, Kinematics, Dynamics Vibration and Control, Fluids Mechanics, Thermodynamics and Heat Transfer, Energy and Environment, Computational Mechanics, Bio Micro and Nano Mechanics and Design and Materials Engineering & Manufacturing.
The editors will welcome papers from all professors and researchers from universities, research centers,
organizations, companies and industries from all over the world in the hope that this will advance the scientific standards of the journal and provide a channel of communication between Iranian Scholars and their colleague in other parts of the world.