在摆锤式示波冲击试验机上采用小角度冲击方法测试了某船用低合金钢的动态弹塑性断裂韧度JId.针对多试样J-R阻力曲线法因钝化线的不易确定性常造成测试结果JId误差较大的情况,考虑了加载速率对塑性流变应力的影响,给出了一新的动载条件下的钝化线方程:J=2NK(0.5εF)n△a.在J-R阻力曲线法测定材料的JId时,用该方程可得到与小角度冲击方法相一致的测试结果.
参考文献
| [1] | 姜风春,刘瑞堂,张晓欣.船用945钢的动态力学性能研究[J].兵工学报,2000(03):257-260. |
| [2] | 姜凤春;刘瑞堂;刘殿魁 .船用921A钢动态断裂韧性测试研究[J].实验力学,1999,14(01):13-18. |
| [3] | Chen B Y;Shi Y W.A comparison of various dynamic elasticplastic fracture toughness evaluating procedure by instrumented impact test[J].Engineering Fracture Mechanics,1990(01):17-26. |
| [4] | Server W L .General yielding of Charpy V-notch and precracked Charpy specimens[J].ASME Journal of Engineering Materials and Technology,1978,100:183-188. |
| [5] | 姜凤春;刘瑞堂;刘殿魁 .动态弹塑性断裂韧性测试方法的比较研究[J].实验力学,1999,14(02):267-272. |
| [6] | Kobayashi T .Analysis of impact properties of A533 steel for nuclear reactor pressure vessel by instrumented Charpy test[J].Engineering Fracture Mechanics,1984,19(01):49-65. |
| [7] | Landes J D;Begley J A.Recent developments in JIC testing[A].Philadelphia:American Society for Testing and Materials,1977:57-81. |
| [8] | Landes J D;Begley J A.Experimental methods for elasticplastic and post-yield fracture toughness measurements[A].London:Appl Sci Pub LTD,1979:211-254. |
| [9] | Hai Qiu;Manabu Enoki;Yoshiaki Kawaguchi .A model for the dynamic fracture toughness of ductile structural steel[J].Engineering Fracture Mechanics,2003(5):589-598. |
| [10] | 姜风春,刘瑞堂,张晓欣,沙桂英.动态弹塑性断裂韧度JⅠd测试方法研究[J].机械强度,2002(03):417-419. |
| [11] | 杨卓青,刘瑞堂,尹建成,张学义.一种新的钝化线形式[J].理化检验-物理分册,2005(02):72-75. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%