#geometric nonlinearity

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025: Non-Linearity: Geometric Nonlinearity

Introduction

With refernce to Fig we distinguish dierent levels of analysis:

First Level elastic which excludes anly nonlinearities. This is usually acceptable for service loads. Elastic Critical load is usually determined from an eigenvalue analysis resulting in the buckling load

Second-order elastic accounts for the eects of nite deformation and displacements, equilibrium equations are written…

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