Line search (Simcenter Samcef)

The Newton method chooses a step length when its computes a function, but the step length is valid only when the Newton quadratic model for the function reflects that function.

The idea of the line search is to control the length of the Newton method step by minimizing the energy error or the force residue.

In the Simcenter Samcef environment, when you edit a subcase, you can use the Line Search Activation (.SUB ILNS) option to start the line search control.

Where do I find it?

Application	Simcenter 3D
Prerequisite	A Simulation file as the work part and displayed partSimcenter Samcef as the specified solver
Simulation Navigator	In an active solution, right-click an active subcase→Edit
Location in dialog box	Solver Parameters page→Line Search group

Look up more details

Solution Step dialog box (Simcenter Samcef Structure Nonlinear Analysis)

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Line search (Simcenter Samcef), Simcenter 3D 2021.1 Series

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