短纤维复合材料刚度特性的有限元随机能量法预报
A FINITE ELEMENT STOCHASTIC ENERGY METHOD FOR MECHANICAL PROPERTIES OF SHORT FIBER COMPOSITE MATERIALS
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摘要: 本文基于能量等效原理,采用有限元法和随机统计试验的Monte-Carlo方法相结合的随机分析数值方法,提出了可用于短纤维复合材料刚度预报的有限元随机能量法.文中还以碳纤维/AG3合金、碳纤维/GA321合金和钢纤维/尿烷复合材料为例,用本文方法对其刚度特性进行理论预报,所得理论预报与试验值吻合很好,说明本文提出的分析模型和方法是有效的.Abstract: Based on energy equivalence Principle,a finite element stochastic enorgy method is presented to predict the mechanical propertics of short fiber composite materials.The method is a combined method of the finite element method with Monte carlo stochsstic sampling method.Some theoretical predicting results of mechanical properties of Carbon/AG3,Carbon/AG321 and Steel/Urethane as numerical examples are given in the paper.The agrcement of the numerical predicting results with expcrimental results shows that the modal and methcd provided in tho papwr is reasonable and effective.
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