这些东西需要你有全面的ansys知识才会知道！
这些知识的来源基本上是help英文文档，所以选择的标准的是特别多的！
1，确定求解问题的物理范围，在物理范围内有各自的单元
2，查看物理问题相关度，结构的也许与热学有关系，而没有流体的时候就基本上确定了排除使用流体单元的可能性
3，每一种物理问题都有不同的方式来求解，在不同的方式里面又有单元的划分，比如有些单元适合于平面分析，有些单元适合于三维分析！
11.0版本的单元全部在这里：
Elements Reference | Chapter 3. Element Characteristics |
3.1. Element Classifications
Classification Elements
Structural Point MASS21
Structural Line 2-D LINK1
3-D LINK8 , LINK10, LINK11, LINK180
Structural Beam 2-D BEAM3, BEAM23, BEAM54
3-D BEAM4, BEAM24, BEAM44, BEAM188, BEAM189
Structural Solid 2-D PLANE25, PLANE42, PLANE82, PLANE83, PLANE145, PLANE146, PLANE182, PLANE183
3-D SOLID45, SOLID65, SOLID92, SOLID95, SOLID147, SOLID148, SOLID185, SOLID186, SOLID187
Structural Shell 2-D SHELL61, SHELL208, SHELL209
3-D SHELL28, SHELL41, SHELL43, SHELL63, SHELL93, SHELL150, SHELL181, SHELL281
Structural Solid Shell 3-D SOLSH190
Structural Pipe PIPE16, PIPE17, PIPE18, PIPE20, PIPE59, PIPE60
Structural Interface INTER192, INTER193, INTER194, INTER195, INTER202, INTER203, INTER204, INTER205
Structural Multipoint Constraint Elements MPC184, MPC184-Link/Beam, MPC184-Slider, MPC184-Revolute, MPC184-Universal, MPC184-Slot, MPC184-Point, MPC184-Trans, MPC184-Cylin, MPC184-Planar, MPC184-Weld, MPC184-Orient, MPC184-Spherical, MPC184-General
Structural Layered Composite SOLID46, SHELL91, SHELL99, SOLID185 Layered Solid, SOLID186 Layered Solid, SOLSH190, SOLID191
Explicit Dynamics LINK160, BEAM161, PLANE162, SHELL163, SOLID164, COMBI165, MASS166, LINK167, SOLID168
Visco Solid VISCO88, VISCO89, VISCO106, VISCO107, VISCO108
Thermal Point MASS71
Thermal Line LINK31, LINK32, LINK33, LINK34
Thermal Solid 2-D PLANE35, PLANE55, PLANE75, PLANE77, PLANE78
3-D SOLID70, SOLID87, SOLID90
Thermal Shell SHELL57, SHELL131, SHELL132
Thermal Electric PLANE67, LINK68, SOLID69, SHELL157
Fluid FLUID29, FLUID30, FLUID38, FLUID79, FLUID80, FLUID81, FLUID116, FLUID129, FLUID130, FLUID136, FLUID138, FLUID139, FLUID141, FLUID142
Magnetic Electric PLANE53, SOLID96, SOLID97, INTER115, SOLID117, HF118, HF119, HF120, PLANE121, SOLID122, SOLID123, SOLID127, SOLID128, PLANE230, SOLID231, SOLID232
Electric Circuit SOURC36, CIRCU94, CIRCU124, CIRCU125
Electromechanical TRANS109, TRANS126
Coupled-Field SOLID5, PLANE13, SOLID62, SOLID98, ROM144, PLANE223, SOLID226, SOLID227
Contact CONTAC12, CONTAC52, TARGE169, TARGE170, CONTA171, CONTA172, CONTA173, CONTA174, CONTA175, CONTA176, CONTA177, CONTA178
Combination COMBIN7, COMBIN14, COMBIN37, COMBIN39, COMBIN40, COMBI214, PRETS179
Matrix MATRIX27, MATRIX50
Infinite INFIN9, INFIN47, INFIN110, INFIN111
Surface SURF151, SURF152, SURF153, SURF154, SURF156, SURF251, SURF252
Follower Load FOLLW201
Meshing MESH200
Reinforcing REINF265
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