midas FEA provides Auto-mesh, Map-mesh & Protrude-mesh methods to easily and conveniently generate optimum meshes for complex models of any particular configuration. Surface Mesh Surface Quadrilateral, triangle or combined element mesh is generated for Surface Geometry. Planar Area A planar area enclosed by arbitrarily shaped curves is automatically composed, and the program generates a mesh within the area. 4-curve Area Elements within a planar or curved surface area composed by 4 curves are meshed. Solid Mesh Solid Quadrilateral element mesh is generated for Solid Geometry. 2D->3D Tetrahedron solid mesh is automatically generated within a volume enclosed by 2D meshes. midas FEA provides three auto-mesh algorithms for generating optimal surface meshes based on the geometric configuration, analysis type and the user's preference. All of the three algorithms can freely include curves and points within a surface for mesh generation. <2-D analysis models meshed by Auto-mesh Planar Area from DXF data> (Examples in which the program automatically defines the ranges and groups of elements for each range) The Solid Mesher in midas FEA generates 200,000 elements per minute. The user is allowed to define and reflect various mesh size information for meshing most desirable tetrahedron elements. In addition, the program automatically groups elements for each solid, which in turn helps us in subsequent modeling operations. midas FEA provides Mapped-mesh methods, which generate quadrilateral, pentahedron and hexahedron meshes together with Auto-mesh Generation, which generates triangles, quadrilaterals and tetrahedrons. Surface Mesh Surface Quadrilateral mapped mesh is generated for Surface Geometry. k-Curve Area Mapped mesh is generated within an area bounded by a number of arbitrarily shaped curves. 4-Node Area Mapped mesh is generated within an area defined by 4 nodes. Solid Mesh Solid Hexahedron, pentahedron or combined element mesh is generated for Solid Geometry. The Solid Map-Mesh algorithm in midas FEA allows generation of hexahedron meshes for even complex solids. In a complex solid model, a quadrilateral element mesh is automatically generated on a reference face from which the mesh is mapped within the solid. midas FEA provides various element size control methods for effectively generating quality meshes for complex models. Definition of element size An element size for Curve, Surface and Solid is defined. Definition of number of divisions A number of divisions for Curve is defined. Length based Biased Seeding Element sizes at the start and end are defined for Curve. A linearly varying mesh is generated between the two end elements. A mesh, which symmetrically varies relative to the center of Curve, can be also defined. Ratio based Biased Seeding The ratio of the end element size to the start element size can be defined for Curve, and a linearly varying mesh can be generated. A mesh, which symmetrically varies relative to the center of Curve, can be also defined. midas FEA also provides the Adaptive Seeding function, which conveniently allows the control of element sizes in complex models. The program automatically determines the distribution of nodes according to the geometric characteristics on the basis of a user-defined element size. midas FEA provides various protrusion methods by which the user can manually generate meshes. midas FEA allows protrusions of complex meshes including nodes and elements using a variety of geometry objects through advanced modeling methods. Extrude Elements of a lower order element type are extruded in a straight line direction to create elements of a higher order type. Equal and unequal spaces are permitted. Nodes to 1D, 1D to 2D, Curve to 2D and 2D to 3D Revolve Elements of a lower order element type are extruded in a circular direction to create elements of a higher order type. <Method> Nodes to 1D, 1D to 2D, Curve to 2D and 2D to 3D Project Elements of a lower order element type are extruded by projection onto a curved or plane surface to create elements of a higher order type. <Method> Nodes to 1D, 1D to 2D, Curve to 2D, 2D to 3D and 3D to 3D Sweep Elements of a lower order element type are linearly extruded along a guide curve or a series of nodes to create elements of a higher order type. A Scale Factor, which will be applied to the size of elements during a Sweep operation, is permitted. <Method> Nodes to 1D, 1D to 2D, Curve to 2D and 2D to 3D Offset Elements of a lower order element type are extruded in a perpendicular direction to create elements of a higher order type. <Method> 1D to 2D, Curve to 2D and 2D to 3D Fill A space between two groups of elements of a lower order element type and same topology is filled in with higher order elements. <Method> Nodes to 2D, 1D to 2D, Curve to 2D and 2D to 3D midas FEA provides two types of modeling methods to generate reinforcement element in a solid. For prompt modeling procedures and complex reinforcement alignment, embedded bar, used in conjunction with solid element, enables to transfer relevant stiffness to mother elements without nodal connectivity. FEA’s Auto-mesh Solid function is equipped with internal edge consideration (compatible mesh) so that it can generate Reinforcing Truss without significant technical confrontation. To consider interaction between two different characteristic properties, analysis model must include interface elements. midas FEA provides 6 interface generation methods which enables to analyze more complex and realistic problems using interface elements. midas FEA supports a variety of mesh manipulation and checking functionality. Especially, Contact elements can be extracted from the surfaces of solids of 3-D meshes. An option is provided to group extracted elements on the basis of the solids.