金属学报  2008, Vol. 44 Issue (7): 853-858

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铸铁缺口梁断裂过程电测试和结构承载力计算

王利民;孙明远;贺光宗;张东焕;戈晓霞

山东理工大学 交通与车辆工程学院

Electronical measurement of incision iron specimens’ fracture proceeding and calculation of the structure bearing capacity

WANG Li-Min SUN Ming-Yuan

山东理工大学 交通与车辆工程学院

王利民; 孙明远; 贺光宗; 张东焕; 戈晓霞 . 铸铁缺口梁断裂过程电测试和结构承载力计算[J]. 金属学报, 2008, 44(7): 853-858 .
, , , , . Electronical measurement of incision iron specimens’ fracture proceeding and calculation of the structure bearing capacity[J]. Acta Metall Sin, 2008, 44(7): 853-858 .

摘要 参考文献 相关文章 Metrics 全文: PDF(672 KB)   摘要: 为探寻带缺口金属件的断裂规律与承载能力, 对8种不同切口尺寸的铸铁梁进行了三点弯曲 加载实验, 并对其中2个铸铁梁进行应变规电测跟踪测试, 得到了加载点位移、应变规处断裂损伤区 黏聚裂纹张开位移、中性层位置、黏聚裂纹端点位置随载荷的变化曲线. 结合粘聚裂纹应力强度因子 的计算公式与断裂准则, 得到该类材料结构承载力的理论计算数值, 并与实验值进行对比, 二者符合 良好. 关键词 ： 铸铁,  断裂过程测试,  I型应力强度     Abstract：The crack tip’s break damage process area of the material like cast iron, can be simplified for crack with cohesive force. To investigate the fracture process of iron and the calculation method of the specimens’ maximum bearing capacity, the three-point bending experiment of eight kinds of size incision specimens were tested, and two of the specimens was measured with electrical strain gages equipment. Through the experiment data, a series of curves were obtained and analyzed, such as the curves of displacement of load point with loading on the typical specimens, and the curve of fracture damaged area deformation with the loading, the relationship curve of beam neutral axes position and loading, the curve of position of cohesive crack tip and loading. The Stress Intensity Factor of the different size fracture specimens was calculated. For different size specimens, the computation method of structure bearing capacity was presented through the stress intensity factor’s computation formula and the fracture criterion. The theoretical calculated value was compared with the tested results, and the relative error of them is not big. Then, the method of estimating structures’ maximum bearing capacity is feasible. Key words： cast iron    electrical measurement experiment with strain gages    the stress intensity factor of first t 收稿日期: 2007-11-05      ZTFLH:  TU511.1   服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 王利民 孙明远 贺光宗 张东焕 戈晓霞 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y2008/V44/I7/853 [1]Cherepanov G P.Method of Fracture Mechanics:Solid Matter Physics.Dordrecht:Kluwer Academic Publishers, 1997:3 [2]Fan T Y.Fracture Theoretical Basis.Beijing:Science and Technology Publishing House,2003:77 (范天佑．断裂理论基础．北京：科学技术出版社，2003：77) [3]Wang L M,Xu S L,Ren C B.Chin Eng Sci,2007;9:30 (王利民，徐世娘，任传波．中国工程科学．2007；9：30) [4]Jenq Y S,Shah S P.J Eng Mech,1985;111:1227 [5]Xu S L,Reinhardt H W.Int J Fract,1999;98:111 [6]Huang K Z,Yu S W.Elastic-plastic Fracture Mechanics. Beijing:Tsinghua University Press,1985:36 (黄克智，余寿文．弹塑性断裂力学．北京：清华大学出版社，1985：36) [7]Wang D,Du S Y,Wang D F,Zhang R H,Yuan Z P. Fracture Mechanics.Harbin:Harbin Industrial Univer- sity Press,1989:30 (王铎，杜善义，王殿富，张人洪，袁祖培．断裂力学．哈尔滨：哈尔滨工业大学出版社，1989：30) [8]Schlter N,Gimpe F.Comput Mater Sci,1996;7:27 [9]Hill M R,Panontin T L.Eng Fract Mech,2002;69:2163 [10]Chae D,Koss D A.Mater Sci Eng,2004;A366:299 [11]Wang Z Z,Du B P,Li N.Acta Metall Sin,2003;39:843 (王章忠，杜百平，李年．金属学报，2003；39：843) [12]Zhang X Q,Sun Y Q,Zhang Z.Acta Metall Sin,2004;40: 1018 (张晓庆，孙永庆，张峥．金属学报，2004；40：1018) [13]Zhang G P,Takashima K,Higo Y.Acta Metall Sin,2005; 41:337 (张广平，高岛和希，肥後矢吉．金属学报，2005；41：337) [14]Tada H,Paris P C,Trwin G R.The Stress Analysis of Cracks Handbook.3rd Edition,London:ASME Press, 2000:58 [15]Wang L M,Xu S L,Zhao X Q.Sci China,2006;49G:88 (王利民，徐世烺，赵熙强．中国科学，2006；36G：59) [1] 种晓宇, 汪广驰, 杜军, 蒋业华, 冯晶. ZTAp/HCCI复合材料凝固过程中的温度场和热应力的数值模拟[J]. 金属学报, 2018, 54(2): 314-324. [2] 崔君军,陈礼清,李海智,佟伟平. 等温淬火低合金贝氏体球墨铸铁的回火组织与力学性能*[J]. 金属学报, 2016, 52(7): 778-786. [3] 张蕾, 赵红蕾, 朱鸣芳. 球墨铸铁凝固显微组织的元胞自动机模拟*[J]. 金属学报, 2015, 51(2): 148-158. [4] 孙挺, 宋仁伯, 杨富强, 李亚萍, 吴春京. 下贝氏体球墨铸铁在腐蚀介质中的磨粒磨损行为[J]. 金属学报, 2014, 50(11): 1327-1334. [5] 徐锦锋; 翟秋亚; 袁森; 魏兵 . 过共晶球铁凝固过程中奥氏体的生长方式与形貌特征[J]. 金属学报, 2003, 39(2): 136-139 . [6] 杨昭; 张海峰; 王爱民; 丁炳哲; 胡壮麒 . 半固态挤压形成高铬铸铁梯度组织材料[J]. 金属学报, 2003, 39(2): 164-167 . [7] 赵海东; 柳百成; 房贵如; 熊守美 . 球墨铸铁中白口共晶形成的数值模拟[J]. 金属学报, 2001, 37(10): 1107-1111 . [8] 张安峰; 邢建东 . Cr系白口铸铁动态相间腐蚀的定量研究[J]. 金属学报, 2001, 37(1): 77-81 . [9] 张云鹏; 苏俊义 . 工业灰铸铁凝固组织形成过程的数值模拟[J]. 金属学报, 2000, 36(7): 761-764 . [10] 张安峰; 邢建东 . Cr系白口铸铁的相间腐蚀及其电化学行为[J]. 金属学报, 2000, 36(7): 765-769 . [11] 储少军;刘海洪;张合义. 灰铸铁电渣重熔过程石墨球化现象的研究[J]. 金属学报, 1998, 34(9): 971-976. [12] 张继红;魏秉庆;梁吉;高志栋;吴德海. 激光熔覆巴基管/球墨铸铁的研究[J]. 金属学报, 1996, 32(9): 980-984. [13] 符莉;翟启杰;郑光华. 冷硬铸铁中富Nb相形态及分布的研究[J]. 金属学报, 1996, 32(2): 159-162. [14] 蒋建清. 石墨形态和基体组织对铸铁断裂过程的影响[J]. 金属学报, 1994, 30(8): 374-379. [15] 张安峰;邢建东;陆文华. 高铬铸铁的氧化行为[J]. 金属学报, 1993, 29(6): 71-76. Viewed Full text Abstract Cited   Shared      Discussed