{"title":"Polymer Matrix Composites: The case of pentamodes","authors":"","doi":"10.1016/j.compstruct.2024.118419","DOIUrl":null,"url":null,"abstract":"<div><p>Pentamodes are known for their almost zero shear modulus. Polymer Matrix Composites are renowned for multiple advantages, such as their ability to withstand harsh conditions and prolonged usage. In the current study, a combination of these two technologies, i.e. Pentamode-based Polymer Matrix Composites (PPMCs) are proposed for application in seismic isolation. Bearings composed of pentamode layers embedded into polymer matrices are proposed. It is demonstrated that PPMCs feature a shear response improved up to 33 % compared to conventional pentamode specimens. By adding stiffening plates to PPMCs their compressive response can be improved up to 24 %. PPMCs with layers rotated every 45° are suggested to overcome the pentamodes’ anisotropy and their shear stiffness is proved to be increased by up to 26 %. The bearings’ failure mechanisms confirm the aforementioned findings. Real-life seismic excitations illustrate the applicability of PPMCs in seismic isolation and highlight the shear response improvement of up to 39 % offered by PPMCs compared to conventional pentamode devices.</p></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":null,"pages":null},"PeriodicalIF":6.3000,"publicationDate":"2024-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Composite Structures","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0263822324005476","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, COMPOSITES","Score":null,"Total":0}
引用次数: 0
Abstract
Pentamodes are known for their almost zero shear modulus. Polymer Matrix Composites are renowned for multiple advantages, such as their ability to withstand harsh conditions and prolonged usage. In the current study, a combination of these two technologies, i.e. Pentamode-based Polymer Matrix Composites (PPMCs) are proposed for application in seismic isolation. Bearings composed of pentamode layers embedded into polymer matrices are proposed. It is demonstrated that PPMCs feature a shear response improved up to 33 % compared to conventional pentamode specimens. By adding stiffening plates to PPMCs their compressive response can be improved up to 24 %. PPMCs with layers rotated every 45° are suggested to overcome the pentamodes’ anisotropy and their shear stiffness is proved to be increased by up to 26 %. The bearings’ failure mechanisms confirm the aforementioned findings. Real-life seismic excitations illustrate the applicability of PPMCs in seismic isolation and highlight the shear response improvement of up to 39 % offered by PPMCs compared to conventional pentamode devices.
期刊介绍:
The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials.
The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.