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一、引言随着工程结构的大型化和高强度材料的出现与应用,在生产和科研过程中出现的大量问题迫切需要通过断裂分析,计算来解决;同时由于大型机在我国尚未普及且其机时费又十分昂贵。因此,能够研制出断裂力学分析的微机程序系统是颇具探讨价值的课题。鉴于此种情况,我们参考日本横滨大学研制的三维线弹性断裂力学分析的大型机软件《CRACK-3D》,研制,开发出了适于IBM-PC/XT(AT)系列,具有不小于640KB内存,不小于10MB外存的《CRACK-3D》的微机版本。《CRACK-3D》是一个适用于大型机的,可计算1200个节点,200个单元的大型断裂分析软件。它能够计算出裂纹尖端的K值应力场,应变场及节点位移场。采用了二十节点等参块元,十五节点三棱柱元及
I. INTRODUCTION With the appearance and application of large-scale engineering structures and high-strength materials, a great deal of problems in the process of production and scientific research are urgently needed to be solved by fracture analysis and calculation. At the same time, as mainframes are not yet widely used in our country, Time-consuming and expensive. Therefore, to develop a computerized fracture analysis of the computer system is quite a topic of value. In view of this situation, we refer to the CRACK-3D mainframe software developed by Yokohama University in Japan for three-dimensional linear elastic fracture mechanics to develop and adapt the IBM-PC / XT (AT) series with a memory of not less than 640KB , Not less than 10MB external memory “CRACK-3D” computer version. CRACK-3D is a large fracture analysis software for mainframes that can calculate 1200 nodes and 200 units. It is able to calculate the crack tip K stress field, strain field and node displacement field. Adopt the twenty node equal parameter block, fifteen node triangular column element and