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ST7-1.10.10.1 Assumptions of Linear Analysis
Linear analysis is subject to three fundamental assumptions:
- Linear Material Assumption
The material behaves according to Hookes Law, wherein stress is considered to be linearly proportional to strain.
- Linear Geometry Assumption
The response of the system assumes that the displacements are small, even if that turns out not to be the case. The main point about this assumption is that deformation of the system has no effect on its stiffness.
- Known Boundary Conditions Assumption
The boundary conditions are known and fixed at the start of the analysis and do not change with loading or deformation.
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