Key Performance Indicators of Tubes and Foam-Filled Tubes Used as Energy Absorbers

• DOI: 10.1142/s175882511550060x
• Publication Date: 2015-08-30T23:47:41Z
• Authors: Yanfei Xiang; Min Wang; Tongxi Yu; Liming Yang
• Keywords: Performance indicator

Based on a systematic investigation the experimental, theoretical and numerical results various tubes under axial compression/impact including our own tests, set of key performance indicators (KPIs) for assessing comparing energy absorbing tubular structures with configurations is proposed, so as to guide design absorbers whilst facilitate parameter optimization. The five KPIs proposed basis mechanical analyses are effective stroke ratio (ESR), nondimensional load-carrying capacity (NLC), specific absorption (SEA), effectiveness (EEA) undulation (ULC). Moreover, by considering influence foam filling, these also modified extended foam-filled tubes. paper presents series diagrams compare in terms described above. It transpires that circular superior square confirmed mass fillers reductions SEA EEA, though will greatly improve NLC empty novelty present study displayed following aspects: (1) uniquely defining maximum point "energy efficiency" f avoid ambiguity which appeared literature; (2) instead single indicator such SEA, proposing comprehensively assess (3) validating usefulness used absorbers.