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机构地区:[1]南昌大学工程力学实验中心,江西南昌330031 [2]南昌大学高等研究院,江西南昌330031
出 处:《铸造技术》2015年第9期2187-2190,共4页Foundry Technology
基 金:国家自然科学基金资助项目(51268043;11172122);江西省研究生创新专项资金资助项目(YC2013-B014)
摘 要:研究了轴心受压状态下16Mn低合金60°角钢构件嵌固系数的取值。结果表明,16Mn低合金60°角钢的嵌固系数与90°角钢的嵌固系数两者都接近于1.0,这表明角钢两肢之间的嵌固作用很小。相对于90°角钢,16Mn低合金60°角钢的嵌固系数较小。主要是因为随着角钢两肢夹角的减小,两构件的相互约束作用即嵌固作用会减弱。建议在规定16Mn低合金60°角钢轴心受压构件宽厚比限值时,嵌固系数取为1.0。The evaluation of constraint coefficient of 60 degree angle steel member made of low alloy 16Mn under axial compression was investigated. The results show that the constraint coefficients of 60-degree and 90-degree angle steel made of the low alloy 16Mn are nearly 1.0, indicating that the fixed effect between the two limbs of the angle steel is weak. However, the constraint coefficients of 60 degree angle steel made of the low alloy 16Mn is smaller than that of the 90 degree angle steel. The reason is that mutual constraint effect between the two members, i.e. the fixed effect, decreases with the decrease of the angel between the two limbs of the angel steel. Furthermore, the constraint coefficient of 1.0 is suggested for the 60 degree angle steel member made of low alloy 16Mn under the conditions of axial compression and limiting the width-to-thickness ratio.
关 键 词:16Mn低合金60°角钢 轴心受压 嵌固系数 临界荷载 有限元仿真
分 类 号:TG142[一般工业技术—材料科学与工程]
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