轮胎辊与锥辊立磨粉磨过程力学分析

为了对立磨中轮胎型和锥型磨辊的粉磨过程进行分析比较,运用微分剪切理论建立轮胎型与锥型磨辊研磨物料的数学模型:通过建立磨辊-物料接触区域不同位置料层厚度的数学公式,得出料层微分单元受力的平衡方程;将方程积分得到磨辊与物料接触力及接触面积的大小。通过计算,得出在研磨过程不同参数(料层厚度、工作压力以及磨辊偏角)与接触面积之间的关系,并对2种磨辊进行比较分析。结果表明:磨辊偏转角度越大,磨辊所受应力峰值越大;在相同工作条件下,轮胎辊与物料有更大的接触面积,较小的应力峰值。

Flexural response of doubly curved laminated composite shells

In the present work, analytical solutions for laminated composite doubly curved panels on rectangular plan form undergoing small deformations and subjected to uniformly distributed transverse load have been obtained. The problem is formulated using first order shear deformation theory. The spatial descretization of the linear differential equations is carried out using fast converging finite double Chebyshev series. The effect of panel thickness, curvature, boundary conditions, lamination scheme as well as material property on the static response of panel has been investigated in detail.