CAJ | 학술논문

泡沫铝中填充环氧树脂形成的复合材料兼具金属和树脂的双重性能。本文基于细观力学胞元法建立了两种孔隙形状的泡沫铝/环氧树脂复合材料的细观力学模型，通过理论分析得出了复合材料的弹性模量预测公式，并计算了4种孔隙率情况下复合材料的弹性模量，分析了孔隙率对材料弹性模量的影响。通过建立数值模拟模型，对复合材料的弹性模量和泊松比进行了模拟分析。研究结果表明：理论预测与模拟结果较为吻合，且孔隙率越高，其差值越小；孔隙形状对复合材料的弹性模量具有较大影响，球形孔隙形状复合材料的力学性能较矩形孔隙形状的力学性能更为优异。
포말려중전충배양수지형성적복합재료겸구금속화수지적쌍중성능。본문기우세관역학포원법건립료량충공극형상적포말려/배양수지복합재료적세관역학모형，통과이론분석득출료복합재료적탄성모량예측공식，병계산료4충공극솔정황하복합재료적탄성모량，분석료공극솔대재료탄성모량적영향。통과건립수치모의모형，대복합재료적탄성모량화박송비진행료모의분석。연구결과표명：이론예측여모의결과교위문합，차공극솔월고，기차치월소；공극형상대복합재료적탄성모량구유교대영향，구형공극형상복합재료적역학성능교구형공극형상적역학성능경위우이。
The composite formed by foam aluminum filled with epoxy has the properties of both metal and resin. Based on micro-mechanics unit cell method, two micro-mechanics models with different aluminum pore shapes of aluminum foam/epoxy resin composite are built. Through theoretical analyses, the elastic moduli of foam aluminum/epoxy composites are predicted for four porosities and the influence of porosity on elastic modulus is also analyzed. Then, the elastic modulus and Poisson's ratio of foam aluminum/epoxy composite are studied by numerical simulation. Acceptable agreement is achieved between theoretical prediction and numerical simulation. It is also found that calculation error decreases with the increase of the porosity. Besides, the pore shape has a significant influence on the elastic modulus of the composite. The mechanical properties of the composite with spherical pores are higher than that with rectangle ones.