一、前言压力容器的内压疲劳强度问题是锅炉、泵、原子反应堆、化工设备等设计中的一个重要问题。压力容器内压疲劳强度委员会为了调查收集这个问题的有关资料,并写出“设计参考资料”,由1973年7月开始,至现在开了6次委员会会议,研究了国内外的研究报告、设计资料、参考书等资料。本委员会还未结束工作,本报告仅是介绍迄今为止调查过的国内外几个研究结果或研究 I. INTRODUCTION The internal pressure fatigue strength of pressure vessels is an important issue in the design of boilers, pumps, atomic reactors and chemical equipment. For the purpose of investigating and collecting relevant information on this issue and writing “Design Reference Materials”, the Committee started to stress the internal pressure fatigue strength of pressure vessels starting from July 1973 and has now held 6 committee meetings to study domestic and foreign research reports, design Information, reference books and other information. This committee has not finished its work yet. This report is only a brief introduction of several research results or studies that have been investigated so far