【摘要】 本文论述了应用文献中提出da/dN 数学模型对疲劳裂纹扩展全过程所进行的计算机仿真。仿真的主要目的是不做材料实验而用计算机仿真的方法来确定⊿Kth、⊿K(I)、⊿K(Ⅱ)和Kc。作者以关于da/dv的W模型为基础建立了仿真系统的数学模型,提出了认可仿真的标准,给出了仿真流程框图,论述了仿真程序设计中的几个问题,用ACOS—300型计算机进行了交互式仿真。仿真的结果是令人满意的,达到了预期的目的。更多还原

【Abstract】 An application of the da/dN mathematical model propsed in the references [2,11] to the computer simulation of the whole process of fatigue crack propagation is discussed in this paper. The major object of the simulation is to determiee the values ΔK_th, ΔK_Ⅰ, ΔK_Ⅱ and K_c through a computer simulation instead of material experiments. The authors work out a mathematical model of the simulated system on the basis of the W model on da/dN, propose a criterion for the simulation, give out a simulation flowchart, and discuss the problems concerned in the simulation programming. An interactive simualation was performed in an ACOS--300 Computer. The results of simulation was satisfactory, and the expected object was attained.更多还原