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Mohamed_Wael
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What happens if I turned off large deflection in a simulation which has large deflection in Ansys workbench ? should the solution be totally wrong ? will it fail to solve ?
PADT Inc. said:In simple terms the inclusion of large deflection means that ANSYS accounts for changes in stiffness due to changes in shape of the parts you are simulating. The classic case to consider is the loaded fishing rod.
Large deflection in Ansys refers to the nonlinear behavior of a structural element when subjected to a significant amount of external load or displacement. This means that the response of the structure cannot be accurately predicted using traditional linear analysis methods, and a more advanced approach is required.
Ansys solves for large deflection by using a nonlinear solution method, such as the Newton-Raphson or arc-length method. These methods take into account the changing stiffness of the structure as it deforms, allowing for a more accurate prediction of the response.
While Ansys is a powerful tool for solving large deflection problems, it does have some limitations. It may not be able to accurately predict the behavior of highly nonlinear materials or complex geometries. Additionally, the solution time may increase significantly for large deflection problems, making it more computationally expensive.
Technically, yes. Ansys does have a small deflection analysis option that uses linear methods to approximate the behavior of a structure under large deflection. However, this method may not be accurate for highly nonlinear problems and is generally not recommended for large deflection analysis.
Ansys is commonly used in industries such as aerospace, automotive, and civil engineering for solving large deflection problems. Some specific applications include analyzing the behavior of aircraft wings under high loads, predicting the behavior of suspension systems in cars, and designing large-scale structures such as bridges and buildings.