1) EAS piezoelectric solid element
EAS压电固体壳单元
3) piezoelectric solid element
压电固体单元
1.
Starting from the virtual work equation, several novel eight-node piezoelectric solid elements are derived by enhanced assumed strain and assumed natural strain approachs, the significant deficiency of excessive shear strain energy in "thin" structural applications is overcome and their performance are compared with the now available eight-node piezoelectric solid elements.
对八节点压电固体单元的列式进行了深入的研究,从虚功方程出发,利用加强假定应变法(EAS)、假定自然应变法(ANS)等推导了几个新的八节点压电固体单元,并与现有的非协调八节点压电固体单元的性能进行了比较,克服了模拟薄板时所遇到的过高剪切能的缺陷,EAS单元减少了要凝聚的内部参数的个数,而ANS单元则根本不需要凝聚内部参数,因此显著提高了计算效率;依据一个修正的广义变分原理,建立了精化杂交压电固体单元,该单元具有很好的对歪斜网格的适应性;静、动态分析表明,该文所建立的几个单元的计算精度均优于现有的非协调八节点压电固体单元。
4) EAS element
EAS单元
1.
A new strategy has been suggested to improve the performance of the EAS elements.
建议了一种EAS单元的改进策略。
5) piezoelectric shell element
压电曲壳单元
6) solid-shell element
体-壳单元
1.
In order to improve simulation accuracy,a new method was carried out to model the finite element model by combining solid-shell element with solid element.
编制残余应力施加通用程序,建立包含有初始残余应力的加工变形有限元预测模型;由于铣削加工,毛坯体变为薄壁工件,在进行有限元仿真过程中,提出体-壳单元与实体单元的混合单元建模方法,以提高计算效率及便于后续研究;针对工件与工作台单面约束的接触作用及其它工程中的类似单面约束问题,提出将工件视为弹性体,工作台视为刚性体,转化为接触方式进行纯压缩边界条件的模拟,对某典型工件进行了有限元仿真并与模态试验结果对比,验证了其有效性和准确性;基于生死单元技术进行材料去除模拟。
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