ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

Flexure hinges are significant components for achieving the action of lamina emergent mechanisms (LEMs). It has always been a challenge to design the suitable flexure hinges. The key problem is how to design and accomplish the flexible hinges with fine performance and high accuracy. Analysis on bending deformation of S-shaped flexible hinge and LET-shaped flexure hinge was compared to find a higher precision flexure hinge which was more stable in working status. A new type of flexure hinge was designed which combined the features of LET-shaped hinge with S-shaped hinge. It was named as S-LET-shaped flexure hinge. The structure of the S-LET-shaped flexure hinge was designed and the bending stiffness equivalent was presented. According to the characteristics of the bending stiffness, the bending stiffness equivalent correction coefficient of S-LET-shaped flexure hinge was proposed. By analyzing of bending equivalent stiffness for different dimensions of S-LET-shaped flexure hinges, the correction coefficient of bending equivalent stiffness was obtained and the effectiveness of bending equivalent stiffness was verified. Finally, the results of the finite element simulation of hinge bending deformation and torsion deformation were compared among S-shaped, LET-shaped and S-LET-shaped hinges. The bending deformation capacity of S-LET-shaped hinge was between S-shaped and LET-shaped hinges and the torsional deformation capacity of S-LET-shaped hinge was the smallest among the three kinds of hinges.