文章摘要
吴新凤,郝景新,刘文金.基于修正单层梁理论的夹层梁最大弯曲正应力计算[J].包装工程,2014,35(1):69-72.
WU Xin-feng,HAO Jing-xin,LIU Wen-jin.Calculation of Maximum Bending Normal Stress for Sandwich Beam Based on Revised Single Layer Beam Theory[J].Packaging Engineering,2014,35(1):69-72.
基于修正单层梁理论的夹层梁最大弯曲正应力计算
Calculation of Maximum Bending Normal Stress for Sandwich Beam Based on Revised Single Layer Beam Theory
投稿时间:2013-08-13  修订日期:2013-12-01
DOI:
中文关键词: 夹层梁  弯曲正应力  单层梁理论  弯曲特性
英文关键词: sandwich beam  bending normal stress  single layer beam theory  bending property
基金项目:湖南省研究生创新基金( CX2012B315) ;湖南省教育厅优秀青年(13B151)
作者单位
吴新凤 中南林业科技大学, 长沙 410004 
郝景新 中南林业科技大学, 长沙 410004
湖南省家具家饰工业设计中心, 长沙 410004 
刘文金 中南林业科技大学, 长沙 410004
湖南省家具家饰工业设计中心, 长沙 410004 
摘要点击次数:
全文下载次数:
中文摘要:
      目的 计算夹层梁横截面的最大弯曲正应力。 方法 将夹层梁等效成等截面均质单层梁,进而推导出了理论计算公式,并在此基础上进行了三点弯曲试验的算例研究。 结果 当破坏载荷与夹层梁横截面的尺寸一定时,随着芯层与总厚度比的增加,修正单层梁理论计算的最大正应力值逐渐增加,而单层梁理论计算的结果为恒定值。 对于同样结构的夹层梁,随着芯层弹性模量与表层模量比的增加,修正单层梁理论计算的最大正应力与单层梁理论的差异值越来越小。 结论 修正单层梁理论与层合梁理论计算的结果是一致的,该方法可有效进行最大弯曲正应力的预测与计算。
英文摘要:
      Objective To set up maximum bending normal stress equation for sandwich beam. Methods New methodology was proposed based on the equivalent single layer beam theory, after that the numerical examples were demonstrated according to three point flexural test. Results When the cross section of beam and the maximum loading were fixed, the maximum bending normal stress calculated by Revised single layer beam theory ( RSLBT) was increased accordingly with increasing ratio of core thickness to the whole,whereas the calculation result was a constant using the Single layer beam theory ( SLBT) . In addition, for the same sandwich construction, the difference between RSLBT and SLBT became smaller with increasing ratio of core modulus to the top. Conclusion RSLBT, which is equivalent to the Multi-layer beam theory, can provide a new method to calculate the maximum bending normal stress with suitable accuracy.
查看全文   查看/发表评论  下载PDF阅读器
关闭

关于我们 | 联系我们 | 投诉建议 | 隐私保护 | 用户协议

您是第21104177位访问者    渝ICP备15012534号-2

版权所有:《包装工程》编辑部 2014 All Rights Reserved

邮编:400039 电话:023-68795652 Email: designartj@126.com

    

渝公网安备 50010702501716号