| 1. | The portions of the crack near the saw cut and along the edges are closed in relation to the center of the crack face .
接近锯切口和沿着边缘的裂纹部分相对于裂纹面中心而肯定是闭合的。 |
| 2. | Elastic wave scattering of an interface cylindrical crack subjected
多环交界裂纹面在谐振应力波作用下的动应力强度因子 |
| 3. | To solve the dual integral equations , the jumps of the displacements across the crack surfaces are expanded in a series of jacobi polynomials
为了求解对偶积分方程，将裂纹面上的位移差函数展开为雅可毕多项式的级数形式。 |
| 4. | In the numerical calculation , the unknown function is approximated by the product of basic density function and polynomials
根据裂纹面上位移函数的分布特性，通过将位移间断函数表示为特征函数和一组多项式乘积的形式，为其建立了数值方法。 |
| 5. | ( 3 ) the finite element model , in which the contact between the crack lines is considered , is more accurate than traditional fe model to simulate the crack growth and crack closure
( 3 )建立了考虑裂纹面接触的有限元模型，较传统不考虑裂纹面接触的方法更适于模拟裂纹扩展和裂纹闭合效应。 |
| 6. | By use of the fourier transform , the problem can be solved with the help of two pairs of dual integral equations in which the unknown variables are the jumps of the displacements across the crack surfaces
利用傅立叶变换，将问题的求解转换为对以裂纹面上位移差为未知函数的对偶积分方程的求解。 |
| 7. | Through stress , displacement straight - line picture and the strain ratio of two supports before it cracks , the stress and displacement fields of symmetric and asymmetric samples under static conditions are observed
通过裂纹启裂前的应力、位移等直线图及两个支座的应变之比，观察静态条件下对称试件及非对称试件裂纹面两端的应力场和位移场。 |
| 8. | The control parameters and growth lives of cracks are calculated using the method of submodel . come to the conclusion that the results of life is safe while the average stress at crack is used as the remote tensile stress
研究表明，采用子模型法求裂纹扩展寿命研究时，用裂纹面原有位置处的中值应力作为远场应力，可以得到偏安全的计算结果。 |
| 9. | The results show that the present method yields rapidly converging numerical results of stress intensity factors for various aspect ratios of a rectangular crack near an interface , and the boundary conditions along the crack surface are satisfied well
数值结果表明，该方法不仅具有较好的收敛性和较高的数值计算精度，而且能够精确满足裂纹面上的边界条件。 |
| 10. | Based on the fundamental solution of two perfectly bonded elastic halfspaces , and using the boundary integral equation method and the finite - part integral concepts , the problem is reduced to a hypersingular integral equation in which the unknown function is the crack opening displacement discontinuity
首先根据双材料空间的弹性力学基本解，使用边界积分方程方法，在有限部积分的意义下导出了以裂纹面位移间断为未知函数的超奇异积分方程。 |
