【Abaqus】*Solid Section定义复合材料
*SOLID SECTION
介绍
*solid section 用来定义单元的材料属性,材料方向等信息:
- solid (continuum) elements
- infinite elements
- acoustic finite and infinite elements
- particle elements
- truss elements.
Type : Model data;Level : Part,Part instance;Abaqus/CAE : Property module
- example:
** Section: Section-1 *Solid Section, elset=Set-3, composite, orientation=Ori-1, layup=lam 0.5, 1, Gr/Epoxy, 0., p1 0.05, 1, pvdf2, 0., pv1 0.5, 1, Gr/Epoxy, 90., p2 0.5, 1, Gr/Epoxy, 90., p3 0.5, 1, Gr/Epoxy, 90., p4 0.05, 1, pvdf2, 90., pv2 0.5, 1, Gr/Epoxy, 0., p5
data lines
format 1
define homogeneous solid elements, infinite elements, acoustic elements, particle, or truss elements
First (and only) line:
- Enter any attribute values required. The default for the first attribute is 1.0.
format 2
define a composite solid
First line:
- layer thickness(可以是单元相对厚度). 各层的thickness在求解时会自动调整,使所有layer thickness 之和==堆叠方向上的单元长度。
- Number of integration points , layer厚度上的积分点个数,必须是奇数,默认值1.0
- layer material name, 各层的材料名称.
- layer orientation, 各层的材料方向 , 可以是orien angle,也可以引用一个orientation, 或者一个orien distribution
- ply name,指定ply的名称,如果没有指定,则会自动生成ply名称.
重复first line, 直到所有层都定义完毕.如果SYMMETRIC
参数出现,则只需要定义从底层到中面的层ply.
参数说明
必要的参数
elset
: string, 单元集的名称.e.g.elset=Set-3
composite
: none, 该参数只能用于只有位移自由度的三维brick solid elements type。如果单元属于多层材料,则必须包含此参数。这个参数只对Abaqus/Standard analyses有效material
: string, 材料名称.e.g.material=cfrp
The composute 和material参数不能同时出现,如果单元是均质材料就使用material,是多层材料就使用composite。
ref node
: 该参数仅适用于广义平面应变单元和声学无限单元;对于所有其他元素类型,它将被忽略。将此参数设置为参考节点的节点号或包含参考节点的节点集的名称。如果选择了节点集的名称,则该节点集必须只包含一个节点。e.g.ref node=node_set-1
orref node=Node-1
可选的参数
CONTROLS
这个参数用来指定SECTION SONTROLS.具体参见帮助文档
The SECTION CONTROLS option can be used to select the hourglass control and order of accuracy of the formulation for two- and three-dimensional solid elements and to select the kinematic formulation for 8-node brick elements.
LAYUP
这个参数需要和composite
参数一起使用,Set this parameter equal to the name of a composite layup
ORDER
此参数只能用于Abaqus/Explicit中的声学无限单元。定义用于解析声场在无限方向上的变化的九阶多项式的个数,默认ORDER=10
STACK DIRECTION
此参数仅适用于Abaqus/Standard分析。只用于composite element.定义堆叠方向,默认STACK DIRECTION=3
SYMMETRIC
需要和composite
参数一起使用,如果设置为SYMMETRIC
,则只需要定义从底层到中面的层ply.
This parameter cannot be used if spatially varying orientation angles are defined on any composite layer using distributions
定义各向异性材料必须的参数
对于isotropic ,是可选的
orientation
: string, 材料方向,这个参数用来定义单元局部材料坐标..e.g.orientation=Ori-1
For a composite solid ,orientation 选项+ orientation angle 一起定义了laminate 中ply的材料方向
此外,也可以直接在data line中引用orientation 来定义layer 方向.此时orientation
参数指定的材料方向将被忽略,其他layer如果没指定angle,或引用orienation,则会使用orientaion
参数作为该layer的方向.即默认为0度
*Orientation, name=Ori-1 1., 0., 0., 0., 1., 0. 1, 0. *Orientation, name=Ori-2 0., 0.161320529915925, 0.986902065368011, 0., 0.986902065368011, -0.161320529915925 1, 0. ** Section: Section-1 *Solid Section, elset=Set-3, composite, orientation=Ori-1, layup=lam 0.5, 1, Gr/Epoxy, Ori-2, p1 0.05, 1, pvdf2, 0., pv1 0.5, 1, Gr/Epoxy, 90., p2 0.5, 1, Gr/Epoxy, 90., p3 0.5, 1, Gr/Epoxy, 90., p4 0.05, 1, pvdf2, 90., pv2 0.5, 1, Gr/Epoxy, 0., p5
在dat文件中会warning:
***WARNING: A SECTION ORIENTATION AND LAYER ORIENTATION HAS BEEN SPECIFIED. THE SECTION ORIENTATION WILL BE IGNORED. LINE IMAGE: 0.5, 1, GR/EPOXY, ASSEMBLY_PART-1-1_ORI-2, P1
展开查看inp
*Heading ** Job name: Job-1 Model name: Model-1 ** Generated by: Abaqus/CAE 2020 *Preprint, echo=NO, model=NO, history=NO, contact=NO ** ** PARTS ** *Part, name=Part-1 *Node 1, 10., 0.425000012, 2.5999999 2, 10., -4.57499981, 2.5999999 3, 10., 0.425000012, 0. 4, 10., -4.57499981, 0. 5, 7.5, 0.425000012, 2.5999999 6, 7.5, -4.57499981, 2.5999999 7, 7.5, 0.425000012, 0. 8, 7.5, -4.57499981, 0. 9, 5., 0.425000012, 2.5999999 10, 5., -4.57499981, 2.5999999 11, 5., 0.425000012, 0. 12, 5., -4.57499981, 0. 13, 2.5, 0.425000012, 2.5999999 14, 2.5, -4.57499981, 2.5999999 15, 2.5, 0.425000012, 0. 16, 2.5, -4.57499981, 0. 17, 0., 0.425000012, 2.5999999 18, 0., -4.57499981, 2.5999999 19, 0., 0.425000012, 0. 20, 0., -4.57499981, 0. *Element, type=CSS8 1, 7, 8, 4, 3, 5, 6, 2, 1 2, 11, 12, 8, 7, 9, 10, 6, 5 3, 15, 16, 12, 11, 13, 14, 10, 9 4, 19, 20, 16, 15, 17, 18, 14, 13 *Nset, nset="Edge Seeds-1", generate 1, 20, 1 *Elset, elset="Edge Seeds-1", generate 1, 4, 1 *Nset, nset=Set-3, generate 1, 20, 1 *Elset, elset=Set-3, generate 1, 4, 1 *Orientation, name=Ori-1 1., 0., 0., 0., 1., 0. 1, 0. *Orientation, name=Ori-2 0., 0.161320529915925, 0.986902065368011, 0., 0.986902065368011, -0.161320529915925 1, 0. ** Section: Section-1 *Solid Section, elset=Set-3, composite, orientation=Ori-1, layup=lam 0.5, 1, Gr/Epoxy, Ori-2, p1 0.05, 1, pvdf2, 0., pv1 0.5, 1, Gr/Epoxy, 90., p2 0.5, 1, Gr/Epoxy, 90., p3 0.5, 1, Gr/Epoxy, 90., p4 0.05, 1, pvdf2, 90., pv2 0.5, 1, Gr/Epoxy, 0., p5 *End Part ** ** ** ASSEMBLY ** *Assembly, name=Assembly ** *Instance, name=Part-1-1, part=Part-1 *End Instance ** *Nset, nset=Set-2, instance=Part-1-1 3, 4, 7, 8, 11, 12, 15, 16, 19, 20 *Elset, elset=Set-2, instance=Part-1-1, generate 1, 4, 1 *Nset, nset=Set-fix, instance=Part-1-1, generate 17, 20, 1 *Elset, elset=Set-fix, instance=Part-1-1 4, *End Assembly ** ** MATERIALS ** ** si-mm,Gr/Epoxy *Material, name=Gr/Epoxy *Density 1.578e-09, *Elastic, type=ENGINEERING CONSTANTS 132400.,10800.,10800., 0.24, 0.24, 0.49, 5600., 5600. 3600., ** si-mm *Material, name=pvdf2 *Density 1.8e-09, *Dielectric 228.568, *Elastic 10000., 0.3 *Piezoelectric, type=E 0., 0., 0., 0., 0., 0., 0., 0. 0., 0., 0., 0., -1.8e-11, 0., 3e-11, 0. 0., 0. ** ** BOUNDARY CONDITIONS ** ** Name: BC-2 Type: Electric potential *Boundary Set-2, 9, 9 ** ---------------------------------------------------------------- ** ** STEP: Step-1 ** *Step, name=Step-1, nlgeom=NO, perturbation *Frequency, eigensolver=Lanczos, sim, acoustic coupling=on, normalization=mass 15, , , , , ** ** BOUNDARY CONDITIONS ** ** Name: BC-1 Type: Displacement/Rotation *Boundary Set-fix, 1, 1 Set-fix, 2, 2 Set-fix, 3, 3 Set-fix, 4, 4 Set-fix, 5, 5 Set-fix, 6, 6 ** ** OUTPUT REQUESTS ** *Restart, write, frequency=0 ** ** FIELD OUTPUT: F-Output-1 ** *Output, field *Node Output EPOT, U *Element Output, directions=YES 1, 2, 3, 4, 5, 6, 7 E, ELEDEN, ELEN, ENER, EVOL, S *End Step
本文来自博客园,作者:FE-有限元鹰,转载请注明原文链接:https://www.cnblogs.com/aksoam/p/18366925
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