【摘要】 本文基于物理、断裂力学与分形三者必须自洽的原则,提出了消除码尺的量纲与量值选择的不确定性的几何与物理准则,克服了分形用于断裂韧性研究中的不确定性困难。本文的某些观点对于分形在其它学科中的应用,也颇有益处。更多还原

【Abstract】 In this paper, we have introduced the geometrical criterion and physical criterion both of which have solved the uncertainties of fractal dimension and the value of yardstick based on the princible of consistency among physics, fractal and fracture mechanics. We have solved the uncertain problem in application of fractal to the fracture toughness. These viewpoints in this paper will have special meaning for applications of fractal to other fields.更多还原