Stability analysis of electric transmission line tower made with composite material carbon fiber epoxy - An innovative approach / Chiranjit Bhowmik in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 29, N° 1 (02/2019)  

[article]  inREVUE DES COMPOSITES ET DES MATERIAUX AVANCES > Vol. 29, N° 1 (02/2019) . - p. 9-13 Titre : Stability analysis of electric transmission line tower made with composite material carbon fiber epoxy - An innovative approach Type de document : texte imprimé Auteurs : Chiranjit Bhowmik, Auteur ; Prasun Chakraborti, Auteur Année de publication : 2019 Article en page(s) : p. 9-13 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Composites à fibres de carbone Composites à fibres de carbone -- Propriétés mécaniques Epoxydes Pylones électriques Index. décimale : 668.4 Plastiques, vinyles Résumé : Using of composite materials as lattice transmission tower structural material is increasing over conventional zinc galvanized steel materials because of some special features. Special attention should be paid regarding strength and stability of the transmission tower structure which are made with composite materials. In this present study, an effort has been made to analyze the strength and stability of transmission tower made with composite material, Carbon Fiber Epoxy (CFE). The transmission tower is modeled in STAAD considering CFE as structural material to analyze it in terms of strength and stability with different loading conditions in real life application. The maximum tensile stress is found at the transmission tower members near to the base of the structure with the amount of 210MPa. The breaking stress of CFE material is 1200MPa which is much more than the tensile stress occurs at the transmission tower at different loading conditions. The innovative design approach incorporating stability analysis found to be most competent for stating the stability and strength of tower and further clarify the safety approach of design. Note de contenu : - DIFFERENT FORCES/LOADS ASSOCIATED WITH TRANSMISSION TOWER : Wire tension - Transverse load - Longitudinal load - Vertical load - STRENGTH AND STABILITY OF TRANMISSION TOWER IN STAAD PRO : Modeling of transmission tower in STAAD pro - Description of the objective structure - Loading methodology on the tranmission tower - Strength and stability of the tranmsision tower members - Table 1 : Calculated transverse, longitudinal and vertical load - Table 2 : Proposed design parameters for transmission tower - Table 3 : Suitable composite materials for transmission tower available in market - Table 4 : Proposed wire parameters - Fig. 1 : The configuration of existing 132 kv transmission tower with necessary dimensions - Fig. 2 : Differents loads are acting on the tranmission tower - Fig. 3 : Results obtain from STAAD pro, axial force, torsion, stress and displacement DOI : https://doi.org/10.18280/rcma.290102 En ligne : https://www.iieta.org/download/file/fid/597 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34731 [article]

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Study of modal behaviour of sandwich structure with various core materials - An analytical approach / Krishanu Gupta in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 30, N° 1 (02/2020)  

[article]  inREVUE DES COMPOSITES ET DES MATERIAUX AVANCES > Vol. 30, N° 1 (02/2020) . - p. 15-21 Titre : Study of modal behaviour of sandwich structure with various core materials - An analytical approach Type de document : texte imprimé Auteurs : Krishanu Gupta, Auteur ; Prasun Chakraborti, Auteur ; Chiranjit Bhowmik, Auteur Année de publication : 2020 Article en page(s) : p. 15-21 Note générale : Bibliogr. Langues : Français (fre) Catégories : Construction sandwich Déformations (mécanique) Géométrie Poutres Structure en nid d'abeilles Vibrations (mécanique) Index. décimale : 620.11 Matériaux (propriétés, résistance) Résumé : The present study comprises of different types of cored sandwich structures with different core geometries. A combination of materials of skins and cores were considered to investigate the free vibrational or modal behaviour on the core materials and geometries for the structure for illuminating the vibrational aspects for failures. Subsequently, the deformation for sandwich structures with various core geometries and materials was also studied. The objective of the article is to provide an essence of vibrational performance study of aluminium alloy for both skins, and the results were compared among core materials unlike materially configured sandwich structures of honeycomb core. Simulations of mode shapes were obtained using the free vibrational constraints. From this study, it was obtained that, two types of core geometries strictly imply that there is obvious effect of shape of core in sandwich beam vibrational characteristics of structure, as in the study. Lastly, the results obtained by using honeycomb core geometry of certain material was compared to regular rectangular geometrized core and found to have better results in terms of natural frequencies and maximum deformation of the later. Thus, findings may serve as a case for application of similar structures in engineering applications. Note de contenu : - THEORETICAL MODAL ANALYSIS - SANDWICH COMPONENTS MODELLING AND MATERIALS - MODAL BEHAVIOUR AND ANALYSIS : Mode shape analyses of sandwich panels - Table 1 : Material combination for sandwich beams - Table 2 : Material properties of skin and core - Table 3 : Dimensional considerations of sandwich panel - Table 4 : Maximum deformation at different modes DOI : https://doi.org/10.18280/rcma.300103 En ligne : https://www.iieta.org/download/file/fid/27103 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37585 [article]

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