| 刘毅,李晓蔚,陶学文.韧性材料J_R阻力曲线受试样尺寸因素影响的实验研究[J].实验力学,1988,3(3): |
| 韧性材料J_R阻力曲线受试样尺寸因素影响的实验研究 |
| Effect of Specimen Size on J_R Resistance Curve of Ductile Materials |
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| DOI： |
| 中文关键词: 断裂韧性,裂纹扩展,J_R,阻力曲线 |
| 英文关键词:J_R resistance curve, crack growth, fracture toughness, |
| 基金项目: |
| 刘毅 李晓蔚 陶学文 |
| 东北工学院，东北工学院，大连铁道学院 |
| 摘要点击次数: 352 |
| 全文下载次数: 356 |
| 中文摘要: |
| 本文应用不同尺寸的三点弯曲试样和带边侧槽试样,用实验方法研究了启裂J积分(J_(1C))和J_R阻力曲线的斜率(dJ/da)受试样尺寸的影响。结果表明,在满足GB2038-80所规定的试样尺寸要求的条件下,J_(1C)值受试样尺寸影响不大,但DJ/da值受试样尺寸影响较大。因此,在应用以J_R曲线理论为基础的裂纹扩展稳定性评定方法时,如撕裂模量理论及EPRI方法,要应用较大尺寸试样或带侧槽试样来测定J_R阻力曲线。 |
| 英文摘要: |
| The effect of specimen size on the J_(Ic) and the slope of J_R curve (dJ/da) was studied by using three point bending (TPB)and side-grooved TPB specimens of different sizes. The results showed that J_(Ic) was affected insignificantly by specimen size when |
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