2) shell element of relative degrees of freedom
相对自由度壳单元
1.
An efficient and accurate one point quadrature 8 node shell element of relative degrees of freedom is developed for nonlinear dynamic structural analyses.
针对八节点相对自由度壳单元 ,给出了单元内坐标和位移的插值公式 ,利用Hu Washinzu变分原理 ,基于拟应变法 ,在大变形情况下推导了拟应变的表达式 ,构造了带有沙漏控制的动力问题的有限元求解格式 。
3) drilling degree of freedom
旋转自由度
1.
A new 4-node C~0 quadrilateral plate/shell element with drilling degree of freedom;
带旋转自由度C~0类任意四边形板(壳)单元
2.
Quasi-conforming triangle plate and shell elements with drilling degree of freedom;
带旋转自由度拟协调三角形板壳单元
3.
Based on the original Allman s element with drilling degree of freedom and the drilling degree definition, a modified element is presented by means of perfecting the variational functional Πp of Allman s element in the paper.
基于原始的带有旋转自由度的Allman单元,从转动分量定义出发,对原始的Allman单元泛函位能Πp进行了一些修正,推导得到了一个新的单元。
4) rotational degree of freedom
旋转自由度
1.
High calculation precision result can be obtained in finite element analysis of shear wall by using rectangular finite element method,however,for analysis of special structure like staggered shear wall,the introduction of rotational degree of freedom in rectangular element will be more suitable.
剪力墙结构在进行有限元分析的时候,通常选用矩形单元便能获得足够的计算精度,但对于隔层错跨剪力墙这种特殊的剪力墙结构来说,采用带旋转自由度的矩形单元,增加了对转角的考虑,同时将连梁、梁、柱划分为杆单元,使得分析结果更为精确。
2.
It introduces the concept on the rotational degree of freedom of the continuous mechanics.
本文引入连续介质力学中有关旋转自由度的概念来解决外框架梁、柱单元和剪力墙单元的连接问题,在普通平面八节点单元的基础上构造带旋转自由度的平面八节点单元。
3.
A rectangular membrane element with rotational degree of freedom is constructed through finite belts of unit length and width.
根据有限条带思想构造了带旋转自由度的平面矩形膜元,此种单元可与矩形板弯曲单元耦合成平板壳单元,也可单独作为平面应力-应变问题分析单元;单元周边纵向采用线性位移模式和横向采用三次Hermite位移模式,与普通梁单元一致,因此可与梁单元耦合和叠加。
5) drilling degrees of freedom
旋转自由度
1.
This paper uses the finite-layer theory to simulate the transversely isotropic lay-ered soil, and uses a flat-shell element which combines a refined non-conformingquadrilateral plan isoparametric element with drilling degrees of freedom and mindlinPlat bending element using reduced inte.
为解决上下部结构连接处的位移协调问题，本文引人了由带有旋转自由度的精化非协调平面四边形等参元和采用缩减积分的四结点Mindlin板单元所组合而成的一种平板壳单元，这种平板壳单元的一个节点有6个自由度。
6) rotating degree of freedom
旋转自由度
1.
A simple and effective triangular element with rotating degree of freedom;
一个简洁有效的带旋转自由度的平面三角形单元
2.
A quadrilateral axisymmetric element with rotating degree of freedom at the vertex nodes is derived.
在节点增加角旋转自由度的基础上构造任意四边形轴对称单元协调的位移模式 ,为了提高精度 ,消除几何敏感性和适应不可压缩材料 ,在协调的基础上又引入三个非协调的内部位移函数和泡状函数作为附加位移场。
补充资料：ANSYS壳单元分析箱梁
! Analysis a box beam section with shell elements of ANSYS
! 用ansys的壳体单元分析箱梁
! Box dimension: 10*4*4m with shell thickness of 0.04m
! By Lu Xinzheng, Depart. Civil Engineering, Tsinghua University, Beijing
! 陆新征，清华大学土木系
! Aug. 2004
! Define the Element
! 定义单元
/PREP7
!*
ET,1,SHELL93
!*
! Define the section for shells
! 定义壳单元截面
R,1,.04, , , , , ,
!*
! Define the material
! 定义材料
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,EX,1,,200e9
MPDATA,PRXY,1,,.3
! Setup the model
! 建模
! Define the keypoints
! 定义关键点
k,1,0,0,0
k,2,4,0,0
k,3,4,4,0
k,4,0,4,0
! Define the lines
! 定义线
l,1,2
l,2,3
l,3,4
l,4,1
! Define the section area
! 定义截面
a,1,2,3,4
! 用ansys的壳体单元分析箱梁
! Box dimension: 10*4*4m with shell thickness of 0.04m
! By Lu Xinzheng, Depart. Civil Engineering, Tsinghua University, Beijing
! 陆新征，清华大学土木系
! Aug. 2004
! Define the Element
! 定义单元
/PREP7
!*
ET,1,SHELL93
!*
! Define the section for shells
! 定义壳单元截面
R,1,.04, , , , , ,
!*
! Define the material
! 定义材料
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,EX,1,,200e9
MPDATA,PRXY,1,,.3
! Setup the model
! 建模
! Define the keypoints
! 定义关键点
k,1,0,0,0
k,2,4,0,0
k,3,4,4,0
k,4,0,4,0
! Define the lines
! 定义线
l,1,2
l,2,3
l,3,4
l,4,1
! Define the section area
! 定义截面
a,1,2,3,4
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条