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Finite Element method (FEM) is most common Numerical Analysis Technique. The most common application of FEM is Structural analysis. The term structural (or structure) define not only in civil engineering structures like Building, flyover and bridges and buildings, but in addition armed service, aeronautical, and mechanical structures such as car, ship hulls, fighter plane, and machine housings, as well as mechanical components like pistons, machine components, and tools.
The seven types of structural analyses offered in the ANSYS. The primary unknowns (nodal degrees of freedom) evaluated during a structural analysis are displacements. Other quantities, such as strains(diifferent type like von-Mises), stresses, and reaction forces, are then derived from the nodal displacements.
Structural analyses are available in the ANSYS Multiphysics, ANSYS Mechanical, ANSYS Structural, and ANSYS Professional programs .
A static structural analysis calculates the effects of steady loading conditions on a structure, while ignoring inertia and damping effects, such as those caused by time-varying loads. A static structural analysis can, however, include steady inertia loads (such as gravity and rotational velocity), and time-varying loads that can be approximated as static equivalent loads (such because the static equivalent wind and seismic loads commonly defined in many building codes).
Static structural analysis determines the displacements, stresses, strains, and forces in structures or components caused by loads that do not induce significant inertia and damping effects. Steady loading and response conditions are assumed; that is, the loads and also the structure's response are assumed to vary slowly with respect to time. The types of loading that will be applied during a static analysis include:
The seven types of structural analyses offered in the ANSYS. The primary unknowns (nodal degrees of freedom) evaluated during a structural analysis are displacements. Other quantities, such as strains(diifferent type like von-Mises), stresses, and reaction forces, are then derived from the nodal displacements.
Structural analyses are available in the ANSYS Multiphysics, ANSYS Mechanical, ANSYS Structural, and ANSYS Professional programs .
- Static Analysis--It is used to determine deformation, stresses, safety factor contact stress etc. under static loading conditions. Both linear and nonlinear behavior static analyses. Non-linearity can include malleability, stress stiffening, large deflection, large strain, hyper-elasticity, contact surfaces, and creep.
- Modal Analysis--It is used to calculate the mode shapes and natural frequencies of a structure. Different mode extraction methods are available.
- Harmonic Analysis--It is used to determine the response of a structure to harmonically frequency time-varying loads.
- Transient Dynamic Analysis--It is used to determine the response of a structure to arbitrarily (random) time-varying loads. All non-linearity mentioned under Static Analysis above are allowed.
- Spectrum Analysis--An extension of the modal analysis, used to calculate stresses and strains due to a response spectrum or a PSD input (random vibrations).
- Buckling Analysis--It is used to calculate the buckling loads in column and determine the buckling mode shape of column. Both linear (eigenvalue) buckling and nonlinear buckling analyses are possible.
- Explicit Dynamic Analysis--This type of structural analysis is offered within the ANSYS LS-DYNA program only. ANSYS LS-DYNA provides an interface to the LS-DYNA explicit finite element(FE) program. Explicit dynamic analysis is used to calculate fast solutions for large deformation dynamics and complicated contact problems
A static structural analysis calculates the effects of steady loading conditions on a structure, while ignoring inertia and damping effects, such as those caused by time-varying loads. A static structural analysis can, however, include steady inertia loads (such as gravity and rotational velocity), and time-varying loads that can be approximated as static equivalent loads (such because the static equivalent wind and seismic loads commonly defined in many building codes).
Static structural analysis determines the displacements, stresses, strains, and forces in structures or components caused by loads that do not induce significant inertia and damping effects. Steady loading and response conditions are assumed; that is, the loads and also the structure's response are assumed to vary slowly with respect to time. The types of loading that will be applied during a static analysis include:
- Externally applied forces and pressures
- Steady-state inertial forces (such as gravity or move velocity)
- Imposed (nonzero) displacements
- Temperatures (for thermal strain)
- Fluences (for nuclear swelling)
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