为了提升复合材料锥形圆管的吸能效力，使复合材料吸能构件在工程应用中达到最佳吸能效果，研究了复合材料锥形圆管的结构优化，探索了不同锥度（α）与层数（N）的比值（α/N）对比吸能（SEA）和初始峰值载荷（Pinitial）的影响，发现随着α/N值的增大，比吸能（SEA）和初始峰值载荷（Pinitial）均减小；当α/N超过0.54时，锥管在压溃过程中不再发生内外分层。根据优化结果试制复合材料锥管，试验结果表明：优化后的锥管，SEA 从67.9 J/g增加到了78.50 J/g，提高了15.6%；Pinitial从52.3KN减少到了25.2KN，降低了51.8%；质量从55.3g减少到了42.9g，减轻了22.4%。
Abstract
In order to improve energy absorption abilities of carbon-fiber composite cone tubes to make composite energy-absorbing components achieve the best effect of energy-absorbing in engineering applications, the structural optimization of composite cone tubes was investigated. The influences of ratio (α/N) of conical degree (α) to number of ply(N) on the specific energy absorption (SEA) and the initial peak impact load (Pinitial) were studied. It was shown that with increase in α/N, SEA and Pinitial are both reduced; when α/N exceeds 0.54, the delamination no longer occurs in crushing process. Finally, a composite cone tube was manufactured according to the optimization results，the optimal results were validated with tests. Test results showed that after optimization, the tube’s SAE increases 15.6% (from 67.9 J/g to 78.50 J/g), its Pinitial decreases 51.8% (from 52.3KN to 25.2KN), its mass decreases 22.4% (from 55.3g to 42.9g).
关键词
复合材料 /
锥形圆管 /
吸能 /
优化
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Key words
composite /
cone tube /
energy absorption /
optimization
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