[1]杨根喜,李菊丽..水泥回转窑简体裂纹模型的建立和安全评定[J].郑州大学学报(工学版),2009,30(03):52-55,64.[doi:10.3969/j.issn.1671-6833.2009.03.013]
　Yang Genxi,Li Juli.Establishment and safety assessment of simplified crack model of cement rotary kiln[J].Journal of Zhengzhou University (Engineering Science),2009,30(03):52-55,64.[doi:10.3969/j.issn.1671-6833.2009.03.013]

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水泥回转窑简体裂纹模型的建立和安全评定()

分享到：

《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

30卷

期数:

2009年03期

页码:

52-55,64

栏目:

出版日期:

1900-01-01

文章信息/Info

Title:

Establishment and safety assessment of simplified crack model of cement rotary kiln

作者:

杨根喜; 李菊丽.

徐州工程学院,机电工程学院,江苏,徐州,221008, 徐州工程学院,机电工程学院,江苏,徐州,221008

Author(s):

Yang Genxi; Li Juli

关键词:

回转窑;  断裂力学;  裂纹;  安全评定

Keywords:

rotary kiln;  fracture mechanics;  cracks;  Safety assessment

DOI:

10.3969/j.issn.1671-6833.2009.03.013

文献标志码:

A

摘要:

回转窑是水泥生产系统的关键设备之一,其服役状况直接影响水泥的产量和质量.针对某水泥回转窑筒体焊缝沿筒体轴线方向开裂问题,对轮带与筒体进行力学分析,得出引起垫板处筒体焊缝开裂的应力主要包括弯曲应力、温度应力、残余应力等.结合断裂力学和弹塑性力学构建筒体焊缝裂纹的力学模型,按应力强度因子建立筒体焊缝的断裂判据,对裂纹进行安全评定,并通过现场裂纹统计证实了模型和评定的准确性,裂纹临界尺寸为141 mm.

Abstract:

The rotary kiln is one of the key equipment of the cement production system, and its service status directly affects the output and quality of cement. Aiming at the problem of cracking of the cylinder weld of a cement rotary kiln along the cylinder axis, the mechanical analysis of the wheel belt and the cylinder shows that the stress causing the cracking of the cylinder weld at the cushion plate mainly includes bending stress, temperature stress, residual stress, etc. Combined with fracture mechanics and elastoplastic mechanics, the mechanical model of cylinder weld crack was constructed, the fracture criterion of cylinder weld was established according to the stress strength factor, and the safety assessment of the crack was carried out, and the accuracy of the model and assessment was confirmed by on-site crack statistics, and the critical size of the crack was 141 mm.

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