具周期裂纹半无限大功能梯度压电材料的热应力分析

Analysis of Thermo Behaviour of Periodic Crack Peak in Semi-infinite of Functionally Graded Piezoelectric Materials

讨论了无限长功能梯度压电板中双裂纹尖端热响应分析,用Fourier积分变换把混合边值问题转化为以裂纹面上位移为未知量的对偶积分方程,利用Schmidt方法对其求解,最后通过数值算例考察了温度变化及材料系数对应力强度因子的重要影响.

Analysis of thermo bebaviour of periodic crack peak in semi - infinite of functionally graded Piezoelectric materials is discussed in this paper. By using the Fourier transform , the problem could be solved with the help of a pair of dual integral equa- tions in which the unknown variable was the displacement on crack surfaces. And then, these equations were solved by the Schmidt method. Lastly, the co - efficicnce of temperature and material upon the normalized intensity factor was demonstrated by nmnerical example.