断裂力学中一个基本问题的新解

New Solution to a Basic Problem in Fracture Mechanics

文章利用新的方法研究了断裂力学中的一个基本问题 ,即利用Schmidt方法重新求解了Lowen grub研究的条状物体中的一个裂纹问题 ,这一解适用于任何厚度的条状物中的裂纹问题 ,拓展了Lowengrub解的适应范围 (Lowengrub的解仅适用于厚的条状物体中的裂纹问题 ,即适用于δ =h/l 1的情况 ,h是条状物体半厚度 ,l是裂纹的半长 )

This thesis deals with a basic problem if ,fracture mechanics by means of a new method that is, a fresh solution to the cracking problem in a bar object, studied by lowengrub with the help of Scluuidt's inethod. This solution if suitable for any cracking problem in a bar object with any thickness and extends the range for which lowengrub's solution is suitable--lowengrub's solution is merely suitable for the cracking problem in thick bar object, namely, for the case of for the semilength of a δ=h/l1; in the fomnular'b' stands for the semithickness of a bar object and 'l'crack.