Reg: Newmark-beta Method for Nonlinear Multi DOF Systems

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Ram
Ram 2024-2-15
回答： Umang Pandey 2024-8-19
I want to solve one multi degree freedom system in which the stiffness matrix is nonlinear .My system is 12 x 12 in which for every displacement value , the stiffness matrix is changing .
It will be great if i can support. If you guys have any documents please share with me.
Thanks and Regards
Ram

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回答（1 个）

Umang Pandey
Umang Pandey 2024-8-19
Hi Ram,
You can refer to the following File Exchange submission to have a look at the implementation of Newmark-Beta method for Nonlinear Single DOF Systems to get started :
https://www.mathworks.com/matlabcentral/fileexchange/71007-newmark-beta-method-for-nonlinear-single-dof-systems
Additionally, the code snippet provided in the answer of the following MATLAB answer might nudge you in the correct direction for implementing it for multi DOF systems:
https://www.mathworks.com/matlabcentral/answers/2078226-newmark-beta-in-dynamic-analysis-for-solving-nonlinear-stiffness-matrix-problem
Hope this helps!
Best,
Umang

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