| 复合材料薄壁管冲击断裂分析与吸能特性优化 |
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| 引用本文： | 李喆,孙凌玉.复合材料薄壁管冲击断裂分析与吸能特性优化[J].复合材料学报,2011(4):212-218. |
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| 作者姓名： | 李喆 孙凌玉 |
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| 作者单位： | 北京航空航天大学交通科学与工程学院; |
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| 基金项目： | 国家自然科学基金(50975011) |
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| 摘 要： | 为实现不同冲击载荷下的吸能管结构逆向设计,应用复合材料强度和刚度理论,计算得到树脂基纤维增强复合材料正交各向异性的力学参数,同时应用非线性显式有限元算法模拟了轴向冲击载荷作用下管件的动态断裂过程。根据正交设计原理,得到了管件比吸能与其几何参数之间的非线性映射关系,并构造出了相应的响应表面。按照汽车正面碰撞对冲击加速度的...
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| 关 键 词： | 复合材料 能量吸收 有限元法 优化设计 轻量化汽车 |
Impact fracture analysis and energy absorption optimization of thin-walled composite tubes under axial impact loads |
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| LI Zhe,SUN Lingyu.Impact fracture analysis and energy absorption optimization of thin-walled composite tubes under axial impact loads[J].Acta Materiae Compositae Sinica,2011(4):212-218. |
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| Authors: | LI Zhe SUN Lingyu |
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| Affiliation: | LI Zhe,SUN Lingyu(School of Transportation Science and Engineering,Beihang University,Beijing 100191,China) |
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| Abstract: | In order to design energy-absorption tubes for different impact loadings,the dynamic fracture process of composite tubes under axial crash loads was simulated by nonlinear explicit finite element method.The orthotropic material constants for fiber-reinforced polymer were obtained based on the strength and stiffness theory of composites.According to the principle of orthogonal design,the nonlinear mapping relations between specific energy absorption of tubes and their geometry parameters were established,and... |
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| Keywords: | composites energy absorption finite element method optimization lightweight vehicles |
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