1. distnd( i,j) — I,j 两点的距离
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2. node(x,y,z) — 提取距离位置(x,y,z)最近的节点号
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3. kp(x,y,z) — 提取距离位置(x,y,z)最近的关键点号 给13亿中国人们更多听觉关怀！！
4.基本函数
ABS(x) Absolute value of x.
SIGN(x,y) Absolute value of x with sign of y. y=0 results in positive sign.
EXP(x) Exponential of x (ex).
LOG(x) Natural log of x (ln (x)).
LOG10(x) Common log of x (log10(x)).
SQRT(x) Square root of x.
NINT(x) Nearest integer to x.
MOD(x,y) Remainder of x/y. y=0 returns zero (0).
RAND(x,y) Random number (uniform distribution) in the range x to y (x = lower bound, y = upper bound).
GDIS(x,y) Random sample of a Gaussian (normal) distribution with mean x and standard deviation y.
SIN(x), COS(x), TAN(x) Sine, Cosine, and Tangent of x. x is in radians by default, but can be changed to degrees with *AFUN.
SINH(x), COSH(x), TANH(x) Hyperbolic sine, Hyperbolic cosine, and Hyperbolic tangent of x. 中国建筑环境声学网
ASIN(x), ACOS(x), ATAN(x) Arcsine, Arccosine, and Arctangent of x. x must be between -1.0 and 1.0 for ASIN and ACOS. Output is in radians by default, but can be changed to degrees with *AFUN. Range of output is -pi/2 to pi/2 for ASIN and ATAN, and 0 to pi for ACOS.
ATAN2(y,x) Arctangent of y/x with the sign of each component considered. Output is in radians by default, but can be changed to degrees with *AFUN. Range of output is -pi to pi.
VALCHR(CPARM) Numerical value of CPARM (if CPARM is non-numeric, returns 0.0).
CHRVAL(PARM) Character value of numerical parameter PARM. Number of decimal places depends on magnitude.
UPCASE(CPARM) Upper case equivalent of CPARM.
LWCASE(CPARM) Lower case equivalent of CPARM. 给13亿中国人们更多听觉关怀！！
5. kx(i) 表示关键点i 的x坐标值；同理 ky(i)；kz(i)
6. nx(i) 表示节点i 的x坐标值；同理 ny(i)；nz(i)
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7. nsel(k) 是节点k在就是1，不在就是0. http://www.chinabea.com/
8. NDNEXT(N) Next higher node number above N in selected set (or zero if none found). 给13亿中国人们更多听觉关怀！！
9. NELEM(ENUM,NPOS) returns the node number in position NPOS for element ENUM. Node number at position 1,2,... or 20 of elementN, where npos is 1,2,...20.
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10. UX(N), UY(N), UZ(N) X, Y, or Z structural displacement or vector sum. 中国建筑环境声学网
11. ROTX(N), ROTY(N), ROTZ(N) X, Y, or Z structural rotation or vector sum. 中国建筑环境声学网
12. TEMP(N) Temperature. 给13亿中国人们更多听觉关怀！！
13. PRES(N) Pressure. http://www.chinabea.com/
14. VX(N), VY(N), VZ(N) X, Y, or Z fluid velocity or vector sum. 给13亿中国人们更多听觉关怀！！
15. ENKE(N) Turbulent kinetic energy (FLOTRAN). http://www.chinabea.com/
16. ENDS(N) Turbulent energy dissipation (FLOTRAN).
17. CENTRX(N), CENTRY(N), and CENTRZ(N) always retrieve the element centroid in global Cartesian coordinates, and are determined from the selected nodes on the elements.
18. ELADJ(N,face) Element number adjacent to face 1,2,...6.。Number assigned to the attribute Name, where Name = MAT, TYPE, REAL, ESYS, PSTAT, LIVE attribute. A zero is returned if the element is unselected. If Name = PSTAT (valid for p-elements only), a 1 is returned if the element. 给13亿中国人们更多听觉关怀！！
19. ESEL(N) Select status of element N -1 = unselected, 0 = undefined.
20. ELNEXT(N) Next higher element number above N in selected set (or zero if none found).
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21. KSEL(N) Select status of keypoint N -1 = unselected, 0 = undefined, 1 = selected.
22. KPNEXT(N) Next higher keypoint number above N in selected set (or zero if none found).
23. LSEL(N) Select status of line N -1=unselected, 0=undefined, 1=selected. http://www.chinabea.com/
24. LSNEXT(N) Next higher line number above N in the selected set (or zero if none found).
25. LX(n,lfrac) return the X coordinate location of line N at the length fraction lfrac (0.0 to 1.0).同理，LY(n,lfrac)；LZ(n,lfrac). 给13亿中国人们更多听觉关怀！！
26. LSX(L,LFRAC) X slope of line L at length fraction LFRAC (0.0 to 1.0).
LSY(L,LFRAC) Y slope of line L at length fraction LFRAC (0.0 to 1.0).
LSZ(L,LFRAC) Z slope of line L at length fraction LFRAC (0.0 to 1.0). 中国建筑环境声学网
27. ASEL(N) Select status of area N -1=unselected, 0=undefined, 1=selected. http://www.chinabea.com/
28. VSEL(N) Select status of volume N -1=unselected, 0=undefined, 1=selected. http://www.chinabea.com/
29. VLNEXT(N) Next higher volume number above N in selected set (or zero if none found).
30.距离函数
DISTND(N1,N2) Distance between nodes N1 and N2.
DISTKP(K1,K2) Distance between keypoints K1 and K2.
DISTEN(E,N) Distance between the centroid of element E and node N. Centroid is determined from the selected nodes on the element.
31.角度函数 (缺省单位为弧度，单位变换用 *AFUN 命令)
ANGLEN(N1,N2,N3) Subtended angle between two lines (defined by three nodes where N1 is the vertex node). Default is in radians.
ANGLEK(K1,K2,K3) Subtended angle between two lines (defined by three keypoints where K1 is the vertex keypoint). Default is in radians.
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32.最近实体函数
NNEAR(N) Selected node nearest node N.
KNEAR(K) Selected keypoint nearest keypoint K.
ENEARN(N) Selected element nearest node N. The element position is calculated from the selected nodes. 给13亿中国人们更多听觉关怀！！
33.面积函数
AREAND(N1,N2,N3) Area of the triangle with vertices at nodes N1, N2, and N3.
AREAKP(K1,K2,K3) Area of the triangle with vertices at keypoints K1, K2, and K3.
ARNODE(N) Area at node N apportioned from selected elements attached to node N. For 2-D planar solids, returns edge area associated with the node. For axisymmetric solids, returns edge surface area associated with the node. For 3-D volumetric solids, returns face area associated with the node. 中国建筑环境声学网
34.法向函数
NORMNX(N1,N2,N3) X-direction cosine of the normal to the plane containing nodes N1, N2, and N3.
NORMNY(N1,N2,N3) Y-direction cosine of the normal to the plane containing nodes N1, N2, and N3.
NORMNZ(N1,N2,N3) Z-direction cosine of the normal to the plane containing nodes N1, N2, and N3.
NORMKX(K1,K2,K3) X-direction cosine of the normal to the plane containing keypoints K1, K2, and K3.
NORMKY(K1,K2,K3) Y-direction cosine of the normal to the plane containing keypoints K1, K2, and K3.
NORMKZ(K1,K2,K3) Z-direction cosine of the normal to the plane containing keypoints K1, K2, and K3. 给13亿中国人们更多听觉关怀！！
35.相邻实体函数
ENEXTN(N,LOC) Element connected to node N. LOC is the position in the resulting list when many elements share the node. A zero is returned at the end of the list.
NELEM(E,NPOS) Node number in position NPOS (1--20) of element E. http://www.chinabea.com/
36.面函数
ELADJ(E,FACE) Element adjacent to a face (FACE) of element E. The face number is the same as the surface load key number. Only elements of the same dimensionality and shape are considered. A -1 is returned if more than one is adjacent.
NDFACE(E,FACE,LOC) Node in position LOC of a face number FACE of element E. The face number is the same as the surface load key number. LOC is the nodal position on the face (for an IJLK face, LOC=1 is at node I, 2 is at node J, etc.)
NMFACE(E) Face number of element E containing the selected nodes. The face number output is the surface load key. If multiple load keys occur on a face (such as for line and area elements) the lowest load key for that face is output.
ARFACE(E) For 2-D planar solids and 3-D volumetric solids, returns the area of the face of element E containing the selected nodes. For axisymmetric elements, the area is the full (360 degree) area. http://www.chinabea.com/