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DEVELOPMENT OF REUSABLE HIGH-MOLECULAR-WEIGHT--HIGH-DENSITY POLYETHYLENE CRASH CUSHIONS.
| 题名： | DEVELOPMENT OF REUSABLE HIGH-MOLECULAR-WEIGHT--HIGH-DENSITY POLYETHYLENE CRASH CUSHIONS. |
| 作者： | Carney-JF-III; Faramawi-MI; Chatterjee-S |
| 关键词： | REUSABLE-CRASH-CUSHIONS; HIGH-DENSITY; HIGH-MOLECULAR-WEIGHT; POLYETHYLENES-; ENERGY-DISSIPATION; THERMOPLASTICS-; HYSTERESIS-; SCALE-MODELS; FINITE-ELEMENT-ANALYSIS; COMPUTER-SIMULATION-MODELS; COLLISION-TESTS; NCHRP-REPORT-350; DESIGN-FEATURES |
| 摘要： | The development of a family of low-maintenance, reusable crash cushions that employ energy dissipaters made of high-molecular-weight--high-density polyethylene is described. This "smart" energy dissipating thermoplastic is self-restorative and reusable and possesses excellent hysteresis characteristics. The design process involved quasistatic and impact scale model experiments, finite-element modeling, and a full-scale crash testing program conducted according to the guidelines of NCHRP Report 350. A treatment of all of these design components is presented. It is demonstrated that scale model experiments and finite-element modeling are cost-effective tools whose employment can minimize the number of costly full-scale crash tests required to qualify devices as acceptable for use on the National Highway System. |
| 总页数： | Transportation Research Record. 1996. (1528) pp11-27 (71 Phot., 14 Fig., 2 Tab., 8 Ref.) |
| 报告类型： | 科技报告 |
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