Buckling analysis of the shell of a refuge chamber in a coal mine under uniform axial compression

来源 :矿业科学技术(英文版) | 被引量 : 0次 | 上传用户:xiaozhenying
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
A stiffened cylindrical shell is normally used in refuge chambers of a coal mine.Based on the method of application and shape characteristics of a refuge chamber,we simplified its shell as an orrhotropic cylinder.The basic buckling equation of the stiffened cylindrical shell under uniform axial compression was deduced by using a Donnell function.The factors affecting its buckling capacity were studied by theoretical analysis and numerical calculations.The results reveal that the torsional rigidity of the longitudinal stiffener had little effect on the buckling capacity of the shell and that the critical load of an externally stiffened cylindrical shell is higher than that of an internally stiffened cylindrical shell.
其他文献
《中共中央国务院关于深化教育改革全面推进素质教育的决定》中指出:"家庭、学校和社会要互相沟通,积极配合,共同开创素质教育的新局面。"研究表明,在幼儿时期,对儿童发展影
全面推进素质教育是当今学校教育的发展方向,本文针对清新区石灰岩山区中学数学教育的薄弱环节,结合具体实际,提出自己一些有效的方法和措施。其中包括如何创设适合学生的教
兴趣是积极探究某种事物或进行某种活动的倾向。如何有效地激发和培养农村职业中学学生对专业学科学习的浓厚兴趣?这是每一个专业课教师在教学过程中都值得探索和深思的一个
笔者依据当前国际教育成果评价现状,从传统教学角度分析研究我国学生科技素质偏低的原因,本着为国家培养未来优秀综合型人才的理念,将基础物理教学与科技成果应用、学生科学
目的对天台县钉螺情现状和再现原因进行分析,为制订有效的防制对策提供依据。方法收集、分析2001—2012年天台县血吸虫病监测资料。结果天台县达到血吸虫病传播阻断标准后病
明代大儒王徵的学术渊源颇多,他不仅受传统的儒、释、道之熏陶,且受到天主教思想之影响,特别是传教士庞迪我《七克》一书对其思想冲击甚大.在《畏天爱人极论》中,王徵以“天
人们预期从乔治·W·布什总统到巴拉克·奥巴马总统的过渡将使美国外交政策向多边主义转变.然而,这种预期至今已被证明是错误的.这在很大程度上是因为,不论其思想倾向如何,后
Four dinuclear amino acid cadmium(Ⅱ) complexes [Cd2(tren)2(dl-alaninato)](ClO4)3·H2O(Ⅰ),[Cd2(tren)2·(l-alaninato)](ClO4)3·H2O(Ⅱ),[Cd2(tren)2(dl-phenylalan
The Green quasifunction method is employed to solve the free vibration problem of clamped thin plates.A Green quasifunction is established by using the fundamen
This paper is concerned with the low Mach number limit for the compressible Navier-Stokes equations in an exterior domain.We present here an approach based on S