critical stress intensity factors meaning in English
临界应力强度因子
Examples
- With this in minds , many researchers have proposed a variety of models for describing the nonlinear fracture of concrete for the past decades . amid them most take the critical stress intensity factor kic as the fracture toughness , a sign of ability to resist the crack extension
对此，在过去的几十年里，众多研究人员提出了很多描述混凝土非线性断裂的模型，而其中的大多数断裂模型都以临界应力强度因子k _ ( ic )作为抵抗裂缝扩展阻力的断裂韧度。 - Based on the theory of fracture mechanics , the relation between the critical stress intensity factors for v - notch kc and the plane strain crack toughness k10c and the brittle fracture criterion of the maximum circumferential stress for single and double stress singularity with the v - notch problems are proposed . experiments were carried out using two kinds of v - notched specimens made out of plexiglas to verify this brittle fracture criterion
本文基于断裂力学原理，推导出了型切口的临界应力强度因子k _ c与材料的平面应变断裂韧度k _ ( 10c )之间的关系，给出了平面单奇异性和双奇异性型切口问题的最大周向应力脆性断裂准则，并用有机玻璃板材加工了两种型切口试样，进行了实验验证。 - Two different reinforcing methodologies are applied : modification of the overlay characteristics by adding chopped glass fibers to the hot mixture asphalt ( hma ) and reinforcing asphalt overlay with glass grids . theory of fracture mechanics ( fm ) is employed to determine crack growth rates for the suggested anti - cracking overlay systems . asphalt mixture designing tests , three point bending tests and fatigue crack propagation tests were carried out . the critical stress intensity factors kic are determined for plain and reinforced asphalt concrete . depending on the fatigue crack propagation , the crack growth rate is determined for each type of anti - cracking system and the cracking process is also analyzed . one of the significant points in this study is the attempt to give better understanding of the crack propagation for multilayer asphaltic overlay or what are suggested herein to be called composite structure anti - cracking overlay system . the results indicate that the reinforcing materials improve anti - cracking characteristics of the asphalt concrete . composite structure anti - cracking overlay gives a good solution for the reflective cracking phenomenon over old cracked pavements
利用2种不同的方法加筋沥青罩面:在沥青混合料中加入短切玻璃纤维改善沥青混凝土的特性,采用玻璃格珊加筋沥青混凝土.应用断裂力学方法分析沥青路面裂缝扩展机理.采用沥青混合料设计试验、三点弯曲试验和疲劳裂缝扩展试验,确定加筋沥青混凝土的临界应力强度因子kic ,测量每一种沥青罩面抗裂系统的裂缝扩展速率.本研究的主要特点是提出复合型抗裂罩面系统,分析了多层加筋沥青罩面裂缝扩展过程,推荐了若干沥青路面抗裂系统.结果证明,加筋材料可以提高沥青罩面的抗裂特性,复合型抗裂罩面系统能够有效地阻止反射裂缝的扩展