The article considers the challenge of studying the mechanical properties of composite sandwich constructions at the interface between the base layers and the lightweight core. The results of strength tests are presented for specimens of sandwich-core panels with coats made of high-strength carbon fiber-reinforced plastics (CFRP) and polymer honeycomb core considering various loading conditions. It is noted that a discrepancy in the values of shear stresses occurs in four-point bending and shear tests due to the complex stress-strain state of the specimens during bending. In order to interpret the experimental data, numerical analysis of the area of contact interaction between the coats and the filler of the sandwich-core composite structures is carried out. It is noted that in the presence of significant normal stresses in the adhesive coat the base layers separate from the core during shear tests and there is underestimation of the values of shear stresses by about 20%. Recommendations for the assignment of ultimate shear stresses for the use in practical design of sandwich-core composite constructions are put forward.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Analysis of contact interaction of polymer honeycomb core and CFRP base layers in sandwich-core constructions


    Beteiligte:
    S. A. Pavlova (Autor:in)


    Erscheinungsdatum :

    2021




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt




    Development of sandwich panel with CFRP honeycomb core for HSCT

    Nakamura, H. / Umeki, K. / Nomoto, K. | Tema Archiv | 1999


    HONEYCOMB CORE, HONEYCOMB SANDWICH STRUCTURE, AND HONEYCOMB CORE MANUFACTURING METHOD

    SEKINE KAZUSHI / MIYASHITA MASAHIRO / KOBAYASHI HIROKI et al. | Europäisches Patentamt | 2018

    Freier Zugriff

    Honeycomb core, honeycomb sandwich structure, and honeycomb core manufacturing method

    SEKINE KAZUSHI / MIYASHITA MASAHIRO / KOBAYASHI HIROKI et al. | Europäisches Patentamt | 2019

    Freier Zugriff

    External Patch Repair of CFRP/Honeycomb Sandwich

    Wolf, K. / Schindler, R. / Advisory Group for Aerospace Research and Development; Structures and Materials Panel | British Library Conference Proceedings | 1995


    External patch repair of CFRP/Honeycomb sandwich

    Wolf, K. / Schindler, R. | TIBKAT | 1994