A comparative study on damage assessment of tubular members subjected to mass impact

作者：Cerik Burak Can^*; Shin Hyun Kyoung; Cho Sang Rai

来源：Marine Structures, 2016, 46: 1-29.

DOI：10.1016/j.marstruc.2015.11.002

• Tubular member
• Mass impact
• Non-linear finite element analysis
• Damage assessment
• Simplified methods

This paper focuses on the behaviour of tubular members when subjected to low-velocity mass impact. Particular emphasis is given to the numerical assessment of impact damage and the classification of impact response of tubular members. Damage extents of 12 tubular frame test models were predicted and used for quantifying the modelling uncertainties of the numerical tools. USFOS and ABAQUS software packages were used with beam and shell elements, respectively. Based on the test results and the parametric studies performed, the influence of the geometrical parameters and the interaction between the local shell denting and the global beam deformation modes are discussed. A classification of the impact response of the tubular members based on their relative resistance against shell denting and beam plastic collapse load is proposed. Finally, existing analytical models for each energy dissipation mode are visited and modifications are proposed.

• 出版日期2016-3