两种方法评价管材力学性能的研究（英文）  

Investigation on Two Methods for Evaluating Mechanical Properties of Tube Materials

作　　者：刘钊[1] 包亦望[1] 万德田[1] 胡春林[2] 马德隆[1] 田远[1] 

机构地区：[1]中国建筑材料科学研究总院绿色建材国家重点实验室,北京100024 [2]武汉理工大学土木工程与建筑学院,武汉430070

出　　处：《无机材料学报》2016年第2期213-219,共7页Journal of Inorganic Materials

基　　金：National Natural Science Foundation of China(51172221;51472227);Major Program of Scientific Instrument and Equipment Development of China(2011YQ140145);National High Technology Research and Development Program of China(863 Program;2015AA034204)

摘　　要：通过挤压一个缺口环或闭口环样品来评价不同管材的弹性模量和弯曲强度。在弹性范围内,弹性模量可由载荷—位移关系和样品尺寸获到;而弯曲强度则由断裂临界载荷决定。在本研究中,四种管材被分为两组来研究这两种方法的适用范围。结果表明:缺口环适合评价刚度较大、极限应变较小的材料,而闭口环则更倾向于评价低刚度的材料。此外,三点弯曲的数据也验证了这两种方法的有效性、便捷性及其各自的适用范围。Elastic modulus and bending strength of tube materials were evaluated via compressing a split ring sample or a closed ring sample for different materials. Elastic modulus was estimated from the load-displacement relationship and sample dimensions in the range of elasticity, while bending strength was derived through the critical load at frac- ture. In this work, four tube materials were divided in two groups to research the applicable scopes of two methods. The results indicate that the split ring is suitable for materials with high brittleness and low limit strain, while the closed ring is available for low-stiffness materials. Comparison with the three-point bending data demonstrated the va- lidity and convenience of two methods with the respective applicable range.

关 键 词：弹性模量 弯曲强度 缺口环 闭口环 管材 

分 类 号：TQ174[化学工程—陶瓷工业]