摘要
为获得低频振动下6061铝合金的拉伸变形行为,采用ABAQUS有限元模拟分析和实验验证相结合的方法,对常规拉伸和低频振动辅助拉伸进行分析,用电子万能试验机对铝合金板材进行常规拉伸和不同方案的低频振动辅助拉伸实验。通过对比常规拉伸、间歇振动拉伸和全程振动拉伸3种拉伸方式,得到低频振动对拉伸过程中平均拉伸载荷和材料伸长率的影响,获得激振力和振动能量对拉伸载荷及材料伸长率的影响。结果表明,随着振幅或频率的提高,最大平均流动应力下降明显;一定范围内的激振力和振动能量,使拉伸平均载荷下降,提高了材料的塑性,增加了材料的伸长率。
To obtain the tensile deformation behavior of 6061 aluminum alloy under low-frequency vibration,the method of ABAQUS finite element simulation analysis combined with experimental verification was used to analyze the conventional tensile and low-frequency vibration assisted tensile,and the conventional tensile and low-frequency vibration assisted tensile experiments of different schemes were carried out on aluminum alloy plates with an electronic universal testing machine.The influence of low-frequency vibration on the average tensile load and material elongation in the tensile process was obtained by comparing the three kinds of tensile methods of conventional tensile,intermittent vibration tensile and whole process vibration tensile.The influence of vibration force and vibration energy on the tensile load and material elongation was obtained.The results show that the maximum average flow stress decreases obviously with the increase of amplitude or frequency.The average tensile load is reduced in a certain range of the vibration force and vibration energy,the plasticity of the material is improved and the elongation of the material is increased.
作者
杨程
陈林
衡明
彭迎娇
YANG Cheng;CHEN Lin;HENG Ming;PENG Ying-jiao(College of Metallurgical Engineering,Xi′an University of Architecture and Technology,Xi′an 710055,China)
出处
《塑性工程学报》
CAS
CSCD
北大核心
2022年第12期33-40,共8页
Journal of Plasticity Engineering
基金
国家自然科学基金资助项目(51874226)
西安市科技局科技创新引导项目(201805033YD11CG17)。
关键词
低频振动
拉伸应力
拉伸载荷
振动能量
激振力
伸长率
low frequency vibration
tensile stress
tensile load
vibration energy
vibration force
elongation
