– This paper aims to present a new robustness-based design strategy for thin-walled composite structures under compressive loading, which combines strength requirements in terms of the limit and ultimate load with robustness requirements evaluated from the structural energy until collapse.

    Design/methodology/approach

    – In order to assess the structural energy, the area under the load-shortening curve between several characteristic points such as local buckling, global buckling, onset of degradation and collapse load is calculated. In this context, a geometrically nonlinear finite element analysis is carried out, in which the ply properties are selectively degraded by progressive failure.

    Findings

    – The advantage of the proposed methodology is observed by analyzing unstiffened composite plates under compressive loading, wherein the lightest plate that satisfies both strength and robustness requirements can be attained.

    Practical implications

    – As a practical implication, this methodology gives a new argument to accept the collapse load close to the ultimate load once robustness is ensured.

    Originality value

    – The structural energy is employed to investigate the robustness of thin-walled composite structures in postbuckling, and new energy-based robustness measures are proposed. In the design of composite structures, this innovative strategy might lead to a more robust design when compared to an approach that only accounts for the ultimate load.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A robustness-based design strategy for composite structures




    Publication date :

    2014-07-01


    Size :

    13 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    A robustness-based design strategy for composite structures – probabilistic approach

    Ribeiro Soares da Cunha, Fábio / Wille, Tobias / Degenhardt, Richard et al. | Emerald Group Publishing | 2014



    Robustness in Reliability-Based Design

    Mahadevan, S. / Stoebner, A. M. / American Institute of Aeronautics and Astronautics et al. | British Library Conference Proceedings | 2000


    Robustness in reliability-based design

    Stoebner, Andrew / Mahadevan, Sankaran | AIAA | 2000


    Filter Element Robustness Strategy for Mud Ingestion

    Emley, John L. / Nichols, Jon / Shrevatsan, Venkatesan | SAE Technical Papers | 2019