摘 要:
研究了无限大正交各向异性功能梯度材料含有限长Griffith裂纹受反平面剪切载荷的力学问题.假设剪切模量沿着梯度方向都按双曲函数变化,采用积分变换-对偶积分方程方法,求得了裂纹尖端应力场和应力强度因子,并研究了材料不均匀参数对应力强度因子的影响。结果显示通过增加垂直于裂纹面方向的剪切模量可以抑制裂纹扩展驱动力。[著者文摘]

文章出处:
《太原科技大学学报》-2007年28卷4期 -321-324页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1673-2057(2007)04-0321-04
Antiplane Fracture Mechanical Analysis of Ⅲ Mode Crack in Orthotropic Functionally Graded Materials
SUI Zhong-he, LI Jun-lin ( Taiyuan University of Science and Technology, Taiyuan 030024, China)
Abstract:
The mechanics problem of Griffith is studied of an unbounded orthotropic functionally graded materials with finite length crack subjected to antiplane shear impact. The shear moduli in two directions were assumed to vary in terms with hyperbolic function. By using integral transformation and dual integral equations, the stress field and stress intensity factor were obtained. And the influence of material asymmetry parameter on stress intensity factor was analized. The results show that increasing shear moduli's gradient of FGM can restrain the driving force of crack expanding.[著者文摘]
Key words:
orthotropic, functionally graded materials, hyperbolic function, dual integral equation, stress intensityfactor
基金资助:
山西省高校科技开发项目(200455,200513)

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