压力容器接管区模拟异型板失效评定曲线FAC研究  

Study of failure assessment curves of special plate to simulate regions of pressure vessel nozzles

作　　者：金志江[1] 

机构地区：[1]浙江大学化工机械研究所

出　　处：《浙江大学学报（自然科学版）》1999年第3期233-236,共4页

基　　金："八五"国家科技攻关项目

摘　　要：建立了双向受拉不等厚高应变梯度异型板的失效评定曲线ＦＡＣ，得到了１６ＭｎＲ材料的ＦＡＣ曲线的三大特征．经与英国通用曲线比较和试验结果验证，选择１曲线不适用于接管高应变区缺陷的安全评定，应加一定的安全系数．项研究将小试样与实物容器接管高应变区的安全评定紧密相联，开拓出一条新的途径．The failure assessment curves of high strain gradient special plate with various thickness loaded by two-way tensile have been established. After compared with common curve and verified by experiment, the plate is able to represent three characters of FAC of 16MnR material, and the Option 1 curve isn't suitable to safety assessment of crack in high strain region of nozzles and it needs to be modified (to be added safety factor).This paper has opened a new path to combine small specimen with safety assessment of high strain region of nozzles in pressure vessels closely.

关 键 词：接管 压力容器 异型板 失效评定曲线 FAC 有限元 

分 类 号：TH49[机械工程—机械制造及自动化]