| 弯矩作用下网状泡沫金属孔棱的可能失效模式 |
| |
| 引用本文： | 刘培生,崔光.弯矩作用下网状泡沫金属孔棱的可能失效模式[J].清华大学学报(自然科学版),2011(8):1112-1115,1121. |
| |
| 作者姓名： | 刘培生 崔光 |
| |
| 作者单位： | 北京师范大学核科学与技术学院; |
| |
| 基金项目： | 中央高校基本科研业务费专项基金资助项目(2009SD-26); 北京师范大学测试基金资助项目(C10) |
| |
| 摘 要： | 泡沫金属是一种具有广泛用途的工程材料。该文以高孔率网状泡沫金属为研究对象,建立了这种多孔材料的简化结构失效模型,研究了相应多孔构件在弯矩作用下的失效模式,这些失效模式包括孔棱的拉断、剪切和屈曲等。得出了这类多孔构件由于弯矩载荷作用而导致孔棱失效的系统的数理关系,包括孔棱失效时多孔构件所受名义弯矩与孔率的数理关系,以及对应于各种失效形式的条件表征。结果表明:当此类多孔构件承受弯矩载荷时,脆性材质多孔体的孔棱多发生拉断破坏,韧性材质多孔体的孔棱则可能发生剪切断裂。
|
| 关 键 词： | 泡沫金属 多孔材料 弯曲载荷 失效 |
Several possible failure modes of reticulated foamed metal pore-struts under bending moment |
| |
| LIU Peisheng,CUI Guang.Several possible failure modes of reticulated foamed metal pore-struts under bending moment[J].Journal of Tsinghua University(Science and Technology),2011(8):1112-1115,1121. |
| |
| Authors: | LIU Peisheng CUI Guang |
| |
| Institution: | LIU Peisheng,CUI Guang(College of Nuclear Science and Technology,Beijing Normal University,Beijing 100875,China) |
| |
| Abstract: | Foamed metals are widely used as engineering materials.A simplified structural failure model was developed for these reticulated porous materials with high porosity to investigate failure modes of the corresponding porous components under bending loads,covering the tensile rupture,the shearing fracture and the yield of the porous body pore struts.The systemic mathematic relationships were derived for pore strut failures due to bending loads on these porous components,including the mathematic relationships b... |
| |
| Keywords: | foamed metal porous material bending failure |
| 本文献已被 CNKI 等数据库收录！ |
|
