Basically a nonlinear static analysis is required for any static application in which the stiffness of the entire structure changes during the loading scenario and the simulation must be solved incrementally to account for the stiffness changes. Also you have to know that: There are three situations in which the stiffness of a structure changes, 1-The deformation of the structure is so large that equilibrium must be considered at the deformed position rather than the original position. 2- The material’s mechanical properties change during loading, in other words the internal stress does not remain directly proportional to the internal strain caused by the external load. This is the case for materials that display plastic or hyper-elastic behaviour. 3- Changes in physical contacts allow stress transfer between structural components.
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Hello Dr, why do we use static no linear here?
Basically a nonlinear static analysis is required for any static application in which the stiffness of the entire structure changes during the loading scenario and the simulation must be solved incrementally to account for the stiffness changes.
Also you have to know that:
There are three situations in which the stiffness of a structure changes,
1-The deformation of the structure is so large that equilibrium must be considered at the deformed position rather than the original position.
2- The material’s mechanical properties change during loading, in other words the internal stress does not remain directly proportional to the internal strain caused by the external load. This is the case for materials that display plastic or hyper-elastic behaviour.
3- Changes in physical contacts allow stress transfer between structural components.