CAJ | 학술논문

文章采用ANSYS程序对含中心裂纹的巴西圆盘（BD）试验和含单边裂纹的半圆弯曲（SCB）试验进行了数值模拟；通过量纲分析，得到了纯Ⅰ型加载条件下BD试验和SCB试验的应力强度因子（ K因子）的拟合公式。该公式具有精度较高、形式简单、适用范围宽的优点。对于BD试验，当 a／R在0．01～0．8范围内，拟合公式值与有限元模拟值的误差在3．5％以内；对于SCB试验，当 s／R在0．4～1．0、a／R在0．01～0．8范围内，拟合公式值与有限元模拟值误差在3．5％以内。
문장채용ANSYS정서대함중심렬문적파서원반（BD）시험화함단변렬문적반원만곡（SCB）시험진행료수치모의；통과량강분석，득도료순Ⅰ형가재조건하BD시험화SCB시험적응력강도인자（ K인자）적의합공식。해공식구유정도교고、형식간단、괄용범위관적우점。대우BD시험，당 a／R재0．01～0．8범위내，의합공식치여유한원모의치적오차재3．5％이내；대우SCB시험，당 s／R재0．4～1．0、a／R재0．01～0．8범위내，의합공식치여유한원모의치오차재3．5％이내。
Numerical simulation of Brazilian disk (BD ) test with center crack and semi‐circular bend (SCB) test with side crack was carried out by using ANSYS program .Through dimensional analysis , the calculation formulas of the K factor of BD test and SCB test under the Ⅰ‐type load were gained . The formulas had the advantages of high precision ,simple form and wide range of application .For the BD specimen ,when the a/R was in the 0.01 to 0.8 range ,the formula had high precision and the er‐ror was within 3 .5% compared with the finite element simulation value .For the SCB specimen ,when the s/R was from 0.4 to 1.0 ,and a/R was in the 0.01 to 0.8 range ,the formula had high precision and the error was within 3 .5% compared with the finite element simulation value .