诱导孔对铝合金薄壁梁轴向压缩变形行为的影响
发布人：上海艾荔艾合金股份有限公司www.shailiai.cn
更新时间：2016-04-01
以6063铝合金薄壁梁结构为研究对象，采用准静态轴向加载的方式，借助WAW-E600型微控万能试验机，探明诱导孔结构对铝合金薄壁梁压缩变形行为与吸能性能的影响规律。
诱导孔对铝合金薄壁梁轴向压缩变形行为的影响Effect of cut-outs on axial collapse behaviors ofaluminum with thin-walled structure以6063铝合金薄壁梁结构为研究对象，采用准静态轴向加载的方式，借助WAW-E600型微控万能试验机，探明诱导孔结构对铝合金薄壁梁压缩变形行为与吸能性能的影响规律。研究表明：单排诱导孔能够使试样的变形模式由欧拉模式转变为混合模式，提高试样变形的稳定性，降低载荷峰值，吸能性能增加26.78%。多排诱导孔的位置与尺寸对薄壁梁的变形有较大影响，试样中部的诱导孔会降低结构稳定性，使试样失稳以欧拉模式变形为主，其载荷水平及吸能性能均较低；尺寸呈梯度变化的诱导孔能够使试样发生手风琴模式的变形，试样顺序压溃，载荷波动平稳，吸能性能较高；大尺寸诱导孔会使试样在局部发生剪切变形并逐层顺序压溃，其载荷平稳，是一种新的变形模式。通过实验数据对比，系统研究诱导孔尺寸对临界载荷的影响规律，并基于线形回归理论，建立铝合金薄壁梁结构临界载荷与截面惯性矩之间的定量关系。
The effect of cut-outs on deformation behaviors and energy absorption of 6063 aluminum with thin-walled structures will be investigated by quasi-static axial compression using WAW-E600 microcomputer controlled universal testing machine. The results show that the deformation mode of the aluminum extrusions is changed from Euler mode to Mixed mode after setting single line cut-outs on the specimen, and the energy absorption increases 26.78%. The deformation behavior is more stable and the peak force is lower than that of the complete sample during compression. The size and position of cutouts have very significant effects on axial collapse behaviors of aluminum thin-walled structure. The aluminum samples buckle under Euler mode with poor performance of deformation stability, loading force and energy absorption, because cut-outs locate in the middle of extrusions. Gradually changing size of cut-outs could leads that the compression behaviors become concertina mode. The aluminum extrusions collapse from top to bottom sequentially with steady load curve and excellent energy absorbing performance. Large cut-outs will introduce local buckling with shear deformation. The compression behavior is a new mode, which has stable load and successive collapse process. Based on the experimental data, the influence of cut-outs size on the critical force was studied. The relationship between critical force and inertia of the thin-walled structure was established by using linear regression.
作为值得信赖的合作伙伴和高品质金属合金的半成品供应商，艾荔艾拥有完善的服务体系和专业的团队。在同客户交易的过程中，我们力求根据不同的应用需求将我们的产品做到精益求精。针对当前和未来的市场需求，艾荔艾致力于为客户提供最佳的金属材料解决方案。
AILIAI has been a reliable partner and supplier of sophisticated and high-quality semi-finished products maed of alloys. In dialogue with our customers, we optimise our products to meet the specific application requirements. AILIAI develops the best alloy material solutions for current and future challenges.
获取更多我们供应的合金和服务信息，请致电086-021-67660801或发电子邮件kefu@ailiaigroup.com联系我们，您也可以通过微博，微信，领英，XING，脸书和推特与我们互动。
For more information on the alloys and services that we supply, call us at 086-021-67660801 or email us at kefu@ailiaigroup.com. You can also get in touch on social media, we are constantly active on Weibo, Weixin, LinkedIn, XING, Facebook and Twitter.