SHELL150单元中英文对照.doc

SHELL150SHELL150 8-Node Structural Shell p-Element 8-节点结构壳P-单元MP ME ST PR PRN PP EME MFS Product Restrictions有效(限制)产品 SHELL150 Element DescriptionSHELL150 单元说明 SHELL150 is a structural shell p-element that supports a polynomial with a maximum order of eight. This element is particularly well suited to model curved shells. It has six degrees of freedom at each node: translations in the nodal x, y, and z directions and rotations about the nodal x, y, and z-axes. See SHELL150 in the Theory Reference for the Mechanical APDL and Mechanical Applications for more details about this element.（形函数解释：形函数，也称为试函数，基函数，在有限单元法中，形函数定义于单元内部的、坐标的连续函数。是指实际上尝试函数代表一种单元上近似解的插值关系它决定近似解在单元上的形状因此尝试函数在有限单元法总中又称为形函数。 在有限单元法中1，形函数N（也称为试函数，基函数，shape function）的作用非常重要。形函数定义于单元内部的、坐标的连续函数，它满足下列条件：1）在节点i处，Ni=1；在其他节点处，Ni=0；2）能保证用它定义的未知量（u、v或x、y）在相邻单元之间的连续性；3）应包含任意线性项，使用它定义的单元唯一可满足常应变条件；4）应满足下列等式：Ni=1。）SHELL150是结构壳P单元，它最多支持八阶形函数。本单元特别适合于曲面壳体模型。本单元的每个节点都具有6个自由度：沿节点坐标系X、Y、Z方向的平动和沿节点坐标系X、Y、Z轴的转动。SHELL单元的更多细节见ANSYS理论手册。Figure150.1:SHELL150 Geometry 图150.1 SHELL150几何表示xIJ = Element x-axis if ESYS is not supplied.xIJ =没有定义单元坐标系时的X 轴。x = Element x-axis if ESYS is supplied.x = 定义了单元坐标系时的X 轴。SHELL150 Input DataSHELL150数据输入The geometry, node locations, and the coordinate system for this element are shown in Figure150.1:SHELL150 Geometry. The element is defined by eight nodes and four thicknesses. Midside nodes may not be removed from this element. See Quadratic Elements (Midside Nodes) in the Modeling and Meshing Guide for more information about the use of midside nodes. A triangular-shaped element may be formed by defining the same node number for nodes K, L and O. 本单元的几何表示，节点位置，坐标系如图150.1SHELL150几何表示所示。本单元需要通过八个节点和四个厚度定义。中间节点不能脱离单元。关于中间节点的更多信息见建模及网格划分指南中的二次单元（中间点）章节。当节点K、L、O的节点号定义为相同时，（四边形单元）可变成三角形单元。The element has orthotropic material properties. Orthotropic material directions correspond to the element coordinate directions.本单元具有正交各向异性的材料特性 ，正交各向异性的材料方向与单元坐标系一致。The element may have variable thickness. The thickness is assumed to vary smoothly over the area of the element, with the thickness input at the corner nodes. The thickness at the midside nodes is taken as the average of the corresponding corner nodes. If the element has a constant thickness, only TK(I) need be input. If the thickness is not constant, all four thicknesses must be input. The total thickness of each shell element must be less than twice the radius of curvature, and should be less than one-fifth the radius of curvature. ADMSUA is the added mass per unit area.本单元的厚度是可变化的。输入几个角节点的厚度后，单元厚度可以被认为沿整个单元面平滑变化。中间节点处的厚度取相邻角节点厚度的均值。如果单元厚度是不变的，此时仅需输入TK(I)即可；如果单元厚度是变化的，则四个厚度必须全部输入。任意一个壳单元的总厚度必须小于曲率半径的两倍，（否则ANSYS将发出一个错误信息）；总厚度最好小于1/5曲率半径。（当总厚度小于两倍但大于1/5曲率半径时，ANSYS将发出一个警告信息）。ADMSUA 为单位面积上的附加质量。 Element loads are described in Node and Element Loads. Pressures may be input as surface loads on the element faces as shown by the circled numbers on Figure150.1:SHELL150 Geometry. Positive pressures act into the element. Because shell edge pressures are input on a per-unit-length basis, per-unit-area quantities must be multiplied by the shell thickness. Temperatures may be input as element body loads at the corner locations (1-8) shown in Figure150.1:SHELL150 Geometry. The first corner temperature T1 defaults to TUNIF. If all other temperatures are unspecified, they default to T1. If only T1 and T2 are input, T1 is used for T1, T2, T3, and T4, while T2 (as input) is used for T5, T6, T7, and T8. For any other input pattern, unspecified temperatures default to TUNIF. Only the lumped mass matrix is available. 单元荷载描述见节点荷载和单元荷载部分。压力作为表面荷载，按照图150.1：SHELL150几何表示圆圈内数字表示的单元表面输入。荷载以单元受压为正。因为边界压力输入值为单位长度上为基础，单位面积量必须乘以壳厚度。（单位面积=单位长度*厚度）温度可以作为单元的体积力作用在“角点”（伪节点）位置（18）“见图150.1：SHELL150几何表示。第一个角点温度T1默认为TUNIF。如果所有其它角点的温度均未指定，则默认为T1。如果只输入T1和T2，输入的T1代表T1, T2, T3, T4； 输入的T2 代表T5, T6, T7, T8。如有其他输入格式，未指定的温度均默认为TUNIF。只有集中质量矩阵是可用的。A summary of the element input is given in SHELL150 Input Summary. A general description of element input is given in Element Input. 在 SHELL150 输入汇总 中给出了本单元输入数据的一个汇总。在 单元输入 中给出了本单元输入数据的一般说明。SHELL150 Input Summary SHELL150 输入汇总Nodes 节点I, J, K, L, M, N, O, P Degrees of Freedom（DOF)自由度UX, UY, UZ （X, Y, Z方向的平动位移）ROTX, ROTY, ROTZ（X, Y, Z方向的转动位移） Real Constants 实常数TK(I) - Shell thickness at node ITK(I) - I节点壳体厚度TK(J) - Shell thickness at node JTK(J) - J节点壳体厚度TK(K) - Shell thickness at node KTK(K) - K节点壳体厚度TK(L) - Shell thickness at node LTK(L) - L节点壳体厚度(Blank) (空白）ADMSUA - Added mass/unit area ADMSUA - 附加质量/单位面积Material Properties 材料特性EX, EY, EZ,（弹性模量） PRXY, PRYZ, PRXZ (or NUXY, NUYZ, NUXZ),（主次泊松比） ALPX, ALPY, ALPZ (or CTEX, CTEY, CTEZ or THSX, THSY, THSZ),（热膨胀系数） DENS, （密度）GXY, GYZ, GXZ（剪切模量） Surface Loads 面载荷Pressures压力face 1 (I-J-K-L) (bottom, in +Z direction)面1 (I-J-K-L)，（底部，+Z方向）face 2 (I-J-K-L) (top, in -Z direction)面2 (I-J-K-L)， （顶部，-Z方向）face 3 (J-I)面3 (J-I)face 4 (K-J)面 4 (K-J)face 5 (L-K) 面 5 (L-K)face 6 (I-L)面 6 (I-L) Body Loads体载荷 Temperature T1, T2, T3, T4, T5, T6, T7, T8 温度T1, T2, T3, T4, T5, T6, T7, T8 Special Features 特殊特性None 无KEYOPT(1) 关键选项（1）Starting p-level: P阶初始0 - Use global starting p-level PPRANGE (default)0 - 使用全局初始P阶PPRANGE（默认值）N- Starting p-level (2 N 8)N- 初始P阶(2 N 8)KEYOPT(2) 关键选项(2）Maximum possible p-level: 最大P阶0 - Use global maximum p-level PPRANGE (default)0 - 使用全局最大P阶PPRANGE（默认值） N - Maximum possible p-level (2 N 8) N- 最大(P阶2 N 8)SHELL150 Output DataSHELL150数据输出 No solution output is produced for this element. The results output associated with the element is in two forms: 本单元没有产生结果输出，与单元有关的结果输出有两种形式：1 Displacements included in the overall nodal solution.1 包括所有节点的位移2 Additional element output as shown in Table150.1:SHELL150 Element Output Definitions.2 更多的单元输出，见表150.1：SHELL150 单元输出定义 。Several items are illustrated in Figure150.2:Stress Output. The element output (RSYS = SOLU) is always in the global coordinate system. Displacements at the midside nodes are approximate for curved edges. 在图150.2应力输出中显示了几个应力输出项。单元输出（RSYS = SOLU）总是在全局坐标系中输出。中心节点的位移近似弯曲边界中的（中心节点）位置。Figure150.2:Stress Output图150.2:应力输出 See the Basic Analysis Guide for ways to view results. 查看结果方式见基本分析指南。The Element Output Definitions table uses the following notation: 单元输出定义表使用以下标记：A colon (:) in the Name column indicates that the item can be accessed by the Component Name method (ETABLE, ESOL). The O column indicates the availability of the items in the file Jobname.OUT. The R column indicates the availability of the items in the results file. 在名称列中的冒号 (：) 表示该项可以用分量名方法ETABLE, ESOL 处理；O 列表示该项可用于 Jobname.OUT 文件；R 列表示该项可用于结果文件。In either the O or R columns, “Y” indicates that the item is always available, a number refers to a table footnote that describes when the item is conditionally available, and “-” indicates that the item is not available.无论 O列或 R 列，Y 表示该项总是可用的，数字表示表的一个注解,其中说明了使用该项的条件；而减号 - 表示该项不可用。 Table150.1SHELL150 Element Output Definitions表150.1 SHELEE150单元输出定义Name Definition O R EL Element number and name 单元号和单元名- Y NODES Nodes - I, J, K, L, M, N, O, P 节点 - I, J, K, L, M, N, O, P - Y MAT Material number 材料号- Y VOLU: Volume 体积- Y XC, YC, ZC Location where results are reported 结果输出点位置Y 1 TEMP T1, T2, T3, T4, T5, T6, T7, T8 - Y S:X, Y, Z, XY, YZ, XZ Stresses 应力- Y S:1, 2, 3 Principal elastic strain 主要弹性应变- Y S:INT Stress intensity 应力强度- Y S:EQV Equivalent stress 当量（等效）应力- Y EPEL:X, Y, Z, XY, YZ, XZ Elastic strains弹性应变 - Y EPEL:1, 2, 3 Principal stress 主要应力- Y EPEL:EQV Equivalent elastic strains 2 等效弹性应变 2 - Y P-LEVEL p-level used 使用P阶- Y 1 Available only at centroid as a *GET item. 1 仅用于 *GET 命令，给出单元中心处结果。2 The equivalent strains use an effective Poissons ratio: for elastic and thermal this value is set by the user (MP,PRXY); for plastic and creep this value is set at 0.5.2 等效应变使用有效泊松比：对于弹性和热问题，该值由用户给出 (MP,PRXY 命令)；对于塑性和蠕变问题，该值设为 0.5。 3 Table150.2:SHELL150 Item and Sequence Numbers lists output available through the ETABLE command using the Sequence Number method. See The General Postprocessor (POST1) in the Basic Analysis Guide and The Item and Sequence Number Table in this manual for more information. The following notation is used in Table150.2:SHELL150 Item and Sequence Numbers: 3 表 150.2: SHELL150 输出项和序列号 列出了可以通过 ETABLE 命令,采用序列号方法输出的内容列表。更多信息见 基本分析指南 中的POST1和本手册中关于输出项和序列号表部分。在表 150.2: SHELL150 输出项和序列号 中使用以下标记：Name 名称output quantity as defined in the Table150.1:SHELL150 Element Output Definitions 与表 150.1: SHELL150 单元输出定义 中定义的输出量Item 项predetermined Item label for ETABLE command 用于 ETABLE 命令的预先定义的输出项E sequence number for single-valued or constant element data 对于单值或常数型单元数据的序列号Table150.2SHELL150 Item and Sequence Numbers表 150.2 SHELL150输出项和序列号Output Quantity Name输出量名称 ETABLE and ESOL Command InputETABLE 和 ESOL 命令输入 ItemEp-LEVELP阶NMISC1SHELL150 Assumptions and Restrictions SHELL150 假设和限制1 Zero area elements are not allowe