What are the reasons of maximum number of null steps in non linear pushover analysis?

06 July 2021 1 6K Report

I am performing nonlinear pushover analysis of RC bridge structure by defining fiber hinges and during analysis it shows, 'maximum number of null steps reached, subsequent results will not be available.'

Alaa Taha Al-Najjar

1. Target displacement not correct.

2. Structure failed before reaching to target displacement.

3. Uncorrected define for plastic hinges especially for bracing and shear walls.

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